alder

fid idnr_aldr id_sgu id_alt id_lab locality lithology litho_txt lithodem stratgroup litho_sub tect tect_sub lithostrat strat_pos lab isot_syst iso_sys_tx method mat_dated age_type age age_error age_err_pl age_err_mi age_min age_max li_age li_age_err n_tot n_calc mswd probabilit age_int age_int_tx reliabilty comment_ ref_short reference ref_link publ_year rev_date reviewer inputdate registrat approved n_sweref e_sweref index_swe n_rt90 e_rt90 index_rt90
alder.2660 2660 EA14A05 Vrångö, Lotsutkiken Wacke, greywacke Banded metagreywacke Stora Le-Marstrand Formation Sveconorwegian Orogen Idefjorden Terrane Supracrustal rock c. 1.60 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Xenotime Concordant age 1500.0 10.0 10.0 10.0 9 0.2 4 Cooling age Not classified Xenotime exhibits simple concentric zoning. A total of and 9 xenotimes were analysed, which are concordant. A weighted average 207Pb/206Pb age is calculated at 1499 ± 24 Ma with MSWD 0.22. Uncertain age interpretation. Ackevall 2016 Ackevall, E., 2016: U-Pb and Hf isotopes of zircon from a bimodal dyke at Lotsutkiken, Sweden: Implications for tectonic interpretations of the Idefjorden Terrane. Master of Science thesis B904 University of Gothenburg Department of Earth Sciences, 44 pp. http://gvc.gu.se/digitalAssets/1571/1571755_b904.pdf 2016 xxx Mar 2, 2017, 3:02:31 PM fhm 1 6385642 307312 6B8b
alder.2661 2661 EA14A02 Vrångö, Lotsutkiken Granodiorite Granodiorite, unfoliated (metatexite?) Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Monazite Weighted average 207Pb/206Pb age 1533.0 17.0 17.0 17.0 18 0.81 4 Cooling age Not classified Simple and complex concentric zoning. Uncertain age interpretation. Ackevall 2016 Ackevall, E., 2016: U-Pb and Hf isotopes of zircon from a bimodal dyke at Lotsutkiken, Sweden: Implications for tectonic interpretations of the Idefjorden Terrane. Master of Science thesis B904 University of Gothenburg Department of Earth Sciences, 44 pp. http://gvc.gu.se/digitalAssets/1571/1571755_b904.pdf 2016 xxx Mar 2, 2017, 3:17:57 PM fhm 1 6385642 307312 6B8b
alder.2662 2662 EA14A02 Vrångö, Lotsutkiken Granodiorite Granodiorite, unfoliated (metatexite?) Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Xenotime Weighted average 207Pb/206Pb age 1510.0 25.0 25.0 25.0 9 0.41999999 4 Cooling age Not classified An upper intercept age of 1513 ± 19 Ma, a lower intercept age of -385 ± 1200 Ma. Uncertain age interpretation. Ackevall 2016 Ackevall, E., 2016: U-Pb and Hf isotopes of zircon from a bimodal dyke at Lotsutkiken, Sweden: Implications for tectonic interpretations of the Idefjorden Terrane. Master of Science thesis B904 University of Gothenburg Department of Earth Sciences, 44 pp. http://gvc.gu.se/digitalAssets/1571/1571755_b904.pdf 2016 xxx Mar 2, 2017, 3:29:12 PM fhm 1 6385642 307312 6B8b
alder.2663 2663 RH15-1 Hörsikan Migmatite Migmatite (orthogneiss) Göteborg suite Sveconorwegian Orogen Idefjorden Terrane Intrusive rock GDG c. 1.62-1.59 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Zircon Concordant age 1598.0 13.0 13.0 13.0 11 6.0E-4 0.98000002 5 Magmatic age High reliabilty CL-dark zircon cores with thin Cl-dark rims. A regression using 28 spots of cores yields an upper intercept age of 1604 ±13 Ma with MSWD 1.10 and probability of fit 0.33. The weighted average 206Pb/207Pb age is 1589 ±19 Ma (n=11). Haeggman 2015 Haeggman, R., 2015: Zircon dating of the Lake Horsika migmatite. Master of Science thesis B875, University of Gothenburg Department of Earth Sciences, 26 pp. http://gvc.gu.se/digitalAssets/1552/1552254_b875.pdf 2015 xxx Mar 2, 2017, 4:06:24 PM fhm 1 6392353 323975 6B9f
alder.2664 2664 RH15-1 Hörsikan Migmatite Migmatite (orthogneiss) Göteborg suite Sveconorwegian Orogen Idefjorden Terrane Intrusive rock GDG c. 1.62-1.59 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1060.0 77.0 77.0 77.0 5 1.11000001 0.34 1 Metamorphic age Not classified Five nearly concordant spots with Th/U ratios below 0.03 Haeggman 2015 Haeggman, R., 2015: Zircon dating of the Lake Horsika migmatite. Master of Science thesis B875, University of Gothenburg Department of Earth Sciences, 26 pp. http://gvc.gu.se/digitalAssets/1552/1552254_b875.pdf 2015 xxx Mar 2, 2017, 4:32:00 PM fhm 1 6392353 323975 6B9f
alder.2665 2665 RH15-2 Hörsikan Pegmatite Pegmatite dyke (3 m wide, isotropic), crosscut migmatite. Muscovite and garnets as accessory minerals. Sveconorwegian Orogen Idefjorden Terrane Intrusive rock c. 1.20-0.92 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Zircon Upper intercept age 1608.0 26.0 26.0 26.0 6 0.69999999 0.58999997 2 Inherited age Not classified CL-bright zircons:round to elongated with sharp edges euhedral shape and few cracks. No zonation is seen. They sometimes have a thin CL-bright rim. Th/U = 0.45 to 1. Haeggman 2015 Haeggman, R., 2015: Zircon dating of the Lake Horsika migmatite. Master of Science thesis B875, University of Gothenburg Department of Earth Sciences, 26 pp. http://gvc.gu.se/digitalAssets/1552/1552254_b875.pdf 2015 xxx Mar 2, 2017, 4:32:05 PM fhm 1 6392403 323915 6B9f
alder.2666 2666 RH15-2 Hörsikan Pegmatite Pegmatite dyke (3 m wide, isotropic), crosscut migmatite. Muscovite and garnets as accessory minerals. Sveconorwegian Orogen Idefjorden Terrane Intrusive rock c. 1.20-0.92 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Zircon Concordant age 1178.0 16.0 16.0 16.0 3 0.27000001 0.61000001 2 Inherited age Not classified Three analyses of a CL-bright zircon (no 22) Haeggman 2015 Haeggman, R., 2015: Zircon dating of the Lake Horsika migmatite. Master of Science thesis B875, University of Gothenburg Department of Earth Sciences, 26 pp. http://gvc.gu.se/digitalAssets/1552/1552254_b875.pdf 2015 xxx Mar 2, 2017, 4:32:10 PM fhm 1 6392403 323915 6B9f
alder.2667 2667 Högsbo Pegmatite Pegmatite (NYF -family ,Niobium, Yttrium, Fluorine). Högsbo pegmatite Sveconorwegian Orogen Idefjorden Terrane Intrusive rock c. 1.20-0.92 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Columbite-Tantalite Concordant age 1038.0 13.0 13.0 13.0 10 1.07000005 0.30000001 5 Magmatic age Not classified Mn -columbite Jonasson 2016 Jonason, D., 2016: U-Pb radiometric dating and trace element characteristics of columbite from the Högsbo pegmatite quarry, south-western Sweden. Master of Science thesis B937, University of Gothenburg Department of Earth Sciences, 25 pp. http://gvc.gu.se/digitalAssets/1588/1588352_b937.pdf 2016 xxx Mar 2, 2017, 4:32:14 PM fhm 1 6395368 317796 639_31 6B9d
alder.2668 2668 TEN150004 Skredsvik, Skaveröd Granite Granite, red, fine to medium grained, weak foliation. Biotite, quartz and alkalifeldspar are the major minerals. Uddevalla granite Sveconorwegian Orogen Idefjorden Terrane Intrusive rock c. 1.20-0.92 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Zircon Concordant age 1027.0 9.0 9.0 9.0 6 0.95999998 0.33000001 5 Magmatic age Not classified Oscillatory zoned zircon. The weighted average 206Pb/207Pb age = 1023 +/-14 (n=21, MSWD=1.2, prob=0.20). xenocryst core analyses with Pb-Pb ages of 1196 ±52 Ma, 1312 ±70 Ma and 1753 ±48 Ma. Jansson 2016 Jansson, E., 2016: Zircon dating of the Uddevalla Granite. Master of Science thesis B873, University of Gothenburg Department of Earth Sciences, 21 pp. http://gvc.gu.se/digitalAssets/1588/1588334_b873.pdf 2016 xxx Mar 3, 2017, 11:06:58 AM fhm 1 6480736 306970 8B5d
alder.2669 2669 DC1501 Frölandskrossen Granite Granite, red medium grained (5 mm) homogenous. Muscovite, biotite, quartz and alkali feldspar are the major minerals. Garnet occurs as an accessorymineral. The sample site shows frequent occurrences of pegmatite veins. Uddevalla granite Sveconorwegian Orogen Idefjorden Terrane Intrusive rock c. 1.20-0.92 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1028.0 29.0 29.0 29.0 5 0.19 0.94 5 Magmatic age Not classified CL grey main domain of zircon. Near concordant. Xenocryst cores yield yield ages of 1308 ±82 Ma, 1527 ±42 Ma, 1683 ±44 Ma, 1759 ±50 Ma and 1872 ±50 Ma Jansson 2016 Jansson, E., 2016: Zircon dating of the Uddevalla Granite. Master of Science thesis B873, University of Gothenburg Department of Earth Sciences, 21 pp. http://gvc.gu.se/digitalAssets/1588/1588334_b873.pdf 2016 xxx Mar 3, 2017, 11:07:06 AM fhm 1 6470714 316376 8B7b
alder.2670 2670 TEN150001 Kissleberg Granite Granite, red medium grained (5 mm) homogenous. Biotite, quartz, muscovite and alkali feldspar are the major minerals. The sample site shows minoroccurrences of pegmatitic and aplitic veins. Uddevalla granite Sveconorwegian Orogen Idefjorden Terrane Intrusive rock c. 1.20-0.92 Ga Department of Earth Sciences, University of Gothenburg 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1200.0 1600.0 2 Inherited age Not classified CL bright xenocryst cores and CL dark rims that yield ages that range between 1200-1300 Ma and 1500-1600 Ma. Jansson 2016 Jansson, E., 2016: Zircon dating of the Uddevalla Granite. Master of Science thesis B873, University of Gothenburg Department of Earth Sciences, 21 pp. http://gvc.gu.se/digitalAssets/1588/1588334_b873.pdf 2016 xxx Mar 3, 2017, 11:22:59 AM fhm 1 6472731 315395 8B5d
alder.2671 2671 K013 Kleva Diorite Diorite Kleva gabbro-diorite intrusive complex Svecokarelian Orogen Småland lithotectonic unit Intrusive rock GSDG c. 1.81-1.76 Ga Goethe-University Frankfurt 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1800.0 7.0 7.0 7.0 47 1.0 5 Magmatic age High reliabilty Petersson et al 2017 Petersson, A., Bjärnborg, K., Scherstén, A., Gerdes, A. & Næraa, T., 2017: Tracing Proterozoic arc mantle Hf isotope depletion of southern Fennoscandia through coupled zircon U–Pb and Lu–Hf isotopes. Lithos 284–285, 122-131. https://doi.org/10.1016/j.lithos.2017.04.010 2017 xxx May 15, 2017, 3:18:53 PM fhm 1 6367876 515658 6F3d
alder.2672 2672 MG Kleva Gabbro Gabbro Kleva gabbro-diorite intrusive complex Svecokarelian Orogen Småland lithotectonic unit Intrusive rock GSDG c. 1.81-1.76 Ga Goethe-University Frankfurt 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1797.0 5.0 5.0 5.0 29 1.0 5 Magmatic age High reliabilty Petersson et al 2017 Petersson, A., Bjärnborg, K., Scherstén, A., Gerdes, A. & Næraa, T., 2017: Tracing Proterozoic arc mantle Hf isotope depletion of southern Fennoscandia through coupled zircon U–Pb and Lu–Hf isotopes. Lithos 284–285, 122-131. https://doi.org/10.1016/j.lithos.2017.04.010 2017 xxx May 15, 2017, 3:18:56 PM fhm 1 6368113 515426 6F4d
alder.2673 2673 K081 Kleva Granite Granite Kleva gabbro-diorite intrusive complex Svecokarelian Orogen Småland lithotectonic unit Intrusive rock GSDG c. 1.81-1.76 Ga Goethe-University Frankfurt 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1801.0 6.0 6.0 6.0 33 1.0 5 Magmatic age High reliabilty Petersson et al 2017 Petersson, A., Bjärnborg, K., Scherstén, A., Gerdes, A. & Næraa, T., 2017: Tracing Proterozoic arc mantle Hf isotope depletion of southern Fennoscandia through coupled zircon U–Pb and Lu–Hf isotopes. Lithos 284–285, 122-131. https://doi.org/10.1016/j.lithos.2017.04.010 2017 xxx May 15, 2017, 3:21:13 PM fhm 1 6370436 520442 6F4e
alder.2674 2674 Rymmen BSE-dark Rymmen Gabbro Gabbro pegmatite Rymmen gabbro Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock GSDG c. 1.71-1.66 Ga Goethe-University Frankfurt 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1706.0 9.0 9.0 9.0 17 0.89999998 5 Magmatic age High reliabilty BSE-dark zircon to represent igneous crystallisation of the host gabbro Petersson et al 2017 Petersson, A., Bjärnborg, K., Scherstén, A., Gerdes, A. & Næraa, T., 2017: Tracing Proterozoic arc mantle Hf isotope depletion of southern Fennoscandia through coupled zircon U–Pb and Lu–Hf isotopes. Lithos 284–285, 122-131. https://doi.org/10.1016/j.lithos.2017.04.010 2017 xxx May 15, 2017, 3:21:47 PM fhm 1 6327489 458969 5E6c
alder.2675 2675 Rymmen BSE-bright Rymmen Gabbro Gabbro pegmatite Rymmen gabbro Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock GSDG c. 1.71-1.66 Ga Goethe-University Frankfurt 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1731.0 5.0 5.0 5.0 28 26 1.29999995 2 Inherited age High reliabilty BSE-bright zircon grains interpreted as igneous xenocrysts while rims formed due to reaction with the gabbroic magma. Petersson et al 2017 Petersson, A., Bjärnborg, K., Scherstén, A., Gerdes, A. & Næraa, T., 2017: Tracing Proterozoic arc mantle Hf isotope depletion of southern Fennoscandia through coupled zircon U–Pb and Lu–Hf isotopes. Lithos 284–285, 122-131. https://doi.org/10.1016/j.lithos.2017.04.010 2017 xxx May 15, 2017, 3:21:52 PM fhm 1 6327489 458969 5E6c
alder.2676 2676 Igneous zircon type 1 n4980, n4982, n4984-n4987 Herrestad (coordinates from one of the samples) Gabbro Samples from olivine-free gabbro and metagabbro Herrestad gabbro Sveconorwegian Orogen Eastern Segment, middle unit Intrusive rock c. 1.59-1.53 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1567.0 5.0 5.0 5.0 6 1.70000005 5 Magmatic age High reliabilty 20 analyses of BSE-bright zircon (type 1) yield an upper intercept age of 1562 +/-6 Ma (MSWD=1.6). Six concordant analyses yield a weighted mean 207Pb/206Pb age of 1565+/-5 Ma (2s, MSWD=0.90) and a concordia age of 1567+/-5 Ma (MSWD=17; of concordance and equivalence). Beckman et al 2017 Beckman, V., Möller, C., Söderlund, U. & Andersson, J., 2017: Zircon Growth during Progressive Recrystallization of Gabbro to Garnet Amphibolite, Eastern Segment, Sveconorwegian Orogen. Journal of Petrology 58, 167-187. http://dx.doi.org/10.1093/petrology/egx009 2017 xxx May 15, 2017, 3:21:58 PM fhm 1 6340473 432347 5D8g
alder.2677 2677 vv23 n5222 Herrestad Amphibolite Garnet amphibolite, completely recrystallized Herrestad gabbro Sveconorwegian Orogen Eastern Segment, middle unit Intrusive rock c. 1.59-1.53 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 970.0 7.0 7.0 7.0 9 1.5 1 Metamorphic age High reliabilty Concordia age of 970+/- 7 Ma (MSWD= 1.5; of equivalence and concordance) and a weighted average 206Pb/238U age of 966+/- 8 Ma (2s, MSWD=1.6). Polycrystalline zircon, anhedral and homogeneous in BSE images. Beckman et al 2017 Beckman, V., Möller, C., Söderlund, U. & Andersson, J., 2017: Zircon Growth during Progressive Recrystallization of Gabbro to Garnet Amphibolite, Eastern Segment, Sveconorwegian Orogen. Journal of Petrology 58, 167-187. http://dx.doi.org/10.1093/petrology/egx009 2017 xxx May 15, 2017, 4:05:34 PM fhm 1 6339126 432246 5D8g
alder.2678 2678 TKN13/17A n5133 Falun deposit Metasomatic rock Silicate-rich altered rock (BQC schist) associated with the hydrothermally altered zone at the Falun deposit Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Monazite Weighted average 207Pb/206Pb age 1830.0 11.0 11.0 11.0 4 1 Metamorphic age High reliabilty Patchy monazite domain Kampmann et al 2016 Kampmann, T.C., Stephens, M.B., Ripa, M., Hellström, F.A. & Majka, J., 2016: Time constraints on magmatism, mineralisation and metamorphism at the Falun base metal sulphide deposit, Sweden, using U–Pb geochronology on zircon and monazite. Precambrian Research 278, 52-68. http://www.sciencedirect.com/science/article/pii/S0301926816300249 2016 xxx Nov 22, 2017, 5:06:56 PM xxx 1 6718397 533476 13F4h
alder.2679 2679 TKN13/17A n5133 Falun deposit Metasomatic rock Silicate-rich altered rock (BQC schist) associated with the hydrothermally altered zone at the Falun deposit Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Monazite Weighted average 207Pb/206Pb age 1830.0 8.0 8.0 8.0 14 1 Metamorphic age High reliabilty Homogeneous monazite domain Kampmann et al 2016 Kampmann, T.C., Stephens, M.B., Ripa, M., Hellström, F.A. & Majka, J., 2016: Time constraints on magmatism, mineralisation and metamorphism at the Falun base metal sulphide deposit, Sweden, using U–Pb geochronology on zircon and monazite. Precambrian Research 278, 52-68. http://www.sciencedirect.com/science/article/pii/S0301926816300249 2016 xxx Nov 22, 2017, 5:07:00 PM xxx 1 6718397 533476 13F4h
alder.2680 2680 TKN13/9B n5134 Falun deposit Metasomatic rock Silicate-rich altered rock (QA rock), associated with the hydrothermally altered zone at the Falun deposit Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Monazite Weighted average 207Pb/206Pb age 1831.0 10.0 10.0 10.0 8 1 Metamorphic age High reliabilty Patchy monazite domain Kampmann et al 2016 Kampmann, T.C., Stephens, M.B., Ripa, M., Hellström, F.A. & Majka, J., 2016: Time constraints on magmatism, mineralisation and metamorphism at the Falun base metal sulphide deposit, Sweden, using U–Pb geochronology on zircon and monazite. Precambrian Research 278, 52-68. http://www.sciencedirect.com/science/article/pii/S0301926816300249 2016 xxx Nov 22, 2017, 5:07:03 PM xxx 1 6718384 533424 13F4h
alder.2681 2681 TKN13/9B n5134 Falun deposit Metasomatic rock Silicate-rich altered rock (QA rock), associated with the hydrothermally altered zone at the Falun deposit Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Monazite Weighted average 207Pb/206Pb age 1823.0 40.0 40.0 40.0 4 1 Metamorphic age High reliabilty Homogeneous monazite domain Kampmann et al 2016 Kampmann, T.C., Stephens, M.B., Ripa, M., Hellström, F.A. & Majka, J., 2016: Time constraints on magmatism, mineralisation and metamorphism at the Falun base metal sulphide deposit, Sweden, using U–Pb geochronology on zircon and monazite. Precambrian Research 278, 52-68. http://www.sciencedirect.com/science/article/pii/S0301926816300249 2016 xxx Nov 22, 2017, 5:07:10 PM xxx 1 6718384 533424 13F4h
alder.2682 2682 TKN13/52A n5132 Falun deposit Metasomatic rock Silicate-rich altered rock (QA rock), associated with the hydrothermally altered zone at the Falun deposit Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Monazite Weighted average 207Pb/206Pb age 1825.0 8.0 8.0 8.0 18 1 Metamorphic age High reliabilty Homogeneous monazite domain Kampmann et al 2016 Kampmann, T.C., Stephens, M.B., Ripa, M., Hellström, F.A. & Majka, J., 2016: Time constraints on magmatism, mineralisation and metamorphism at the Falun base metal sulphide deposit, Sweden, using U–Pb geochronology on zircon and monazite. Precambrian Research 278, 52-68. http://www.sciencedirect.com/science/article/pii/S0301926816300249 2016 xxx Nov 22, 2017, 5:14:38 PM xxx 1 6718169 533446 13F4h
alder.2683 2683 TKN13/42B n5131 Falun, west of Rhyolite Felsic volcanic rock (mass flow) Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Monazite Weighted average 207Pb/206Pb age 1808.0 7.0 7.0 7.0 7 1 Metamorphic age High reliabilty Homogeneous monazite domain Kampmann et al 2016 Kampmann, T.C., Stephens, M.B., Ripa, M., Hellström, F.A. & Majka, J., 2016: Time constraints on magmatism, mineralisation and metamorphism at the Falun base metal sulphide deposit, Sweden, using U–Pb geochronology on zircon and monazite. Precambrian Research 278, 52-68. http://www.sciencedirect.com/science/article/pii/S0301926816300249 2016 xxx Nov 22, 2017, 5:14:46 PM xxx 1 6720019 527604 13F4g
alder.2684 2684 Gällered S Granite Deformed composite granite-aplite dyke cross-cuts mafic layers and white veinlets in the plagioclase-rich gneiss. Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock (c. 1.40 Ga) LIG, Swedish Museum of Natural History, Stockholm 8 Pb-Pb Kober Pb-Pb evaporation Zircon Plateau age 982.0 15.0 15.0 15.0 4 4 0.2 1 Metamorphic age Not classified Four zircons with a metamorphic morphology, multi-facetted with round to oval shapes, have high lustre and lack fractures. Homogeneous and BSE-dark. The age of 982+/-15 Ma is interpreted as dating metamorphism and deformation of the granite dyke. Söderlund et al 2002 Söderlund, U., Möller, C., Andersson, J., Johansson, L. & Whitehouse, M., 2002: Zircon geochronology in polymetamorphic gneisses in the Sveconorwegian orogen, SW Sweden: ion microprobe evidence for 1.46–1.42 and 0.98–0.96 Ga reworking. Precambrian Researc http://dx.doi.org/10.1016/S0301-9268(01)00206-6 2002 xxx Feb 14, 2018, 1:52:25 PM fhm 1 6331535 371075 633_37 6335250 1322250 5C7e
alder.2685 2685 n232, n461, n591, n598 Mårdaklev Gneiss Granitic gneiss with faint nebulitic vein structures Fine-grained, aplite-like, sub-leucocratic, recrystallised rock. Mårdaklev granitic gneiss Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1430.0 21.0 21.0 21.0 7 4 5.19999981 1 Metamorphic age Not classified BSE-bright zircon give 1430 +/- 21 Ma (MSWD=5.2), calculated from four out of seven analyses, interpreted to date metamorphism. Three spot analyses of small, <20 um, homogeneous zircons yield Sveconorwegian ages. Söderlund et al 2002 Söderlund, U., Möller, C., Andersson, J., Johansson, L. & Whitehouse, M., 2002: Zircon geochronology in polymetamorphic gneisses in the Sveconorwegian orogen, SW Sweden: ion microprobe evidence for 1.46–1.42 and 0.98–0.96 Ga reworking. Precambrian Researc http://dx.doi.org/10.1016/S0301-9268(01)00206-6 2002 xxx Feb 14, 2018, 2:02:36 PM fhm 1 6346754 377541 634_37 6350400 1328900 6C0f
alder.2686 2686 SCA5C Kullaberg Gneiss Hbl-Bt gneiss Kullavik horst Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Hornblende Plateau age 900.0 2.0 2.0 2.0 1.34000003 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6242700 342170
alder.2687 2687 SCA7B Åstorp Amphibolite Amphibolite Söderåsen horst Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 893.0 3.0 3.0 3.0 0.89999998 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6222500 372785
alder.2688 2688 SCA7B Åstorp Amphibolite Amphibolite Söderåsen horst Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Hornblende Plateau age 901.0 2.0 2.0 2.0 0.63999999 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6222500 372785
alder.2689 2689 SCA8A Killehus Gneiss Grey gneiss Söderåsen horst Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 962.0 2.0 2.0 2.0 1.02999997 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6216490 377130
alder.2690 2690 DALBY1 Dalby Schist Ms-Bt schist Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 895.0 2.0 2.0 2.0 1.57000005 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6168985 398609
alder.2691 2691 DALBY1 Dalby Schist Ms-Bt schist Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Muscovite Plateau age 895.0 2.0 2.0 2.0 2.25999999 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6168985 398609
alder.2692 2692 JU20 Dalby Amphibolite Amphibolite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 1022.0 2.0 2.0 2.0 0.63999999 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6169031 398950
alder.2693 2693 JU23 Dalby Amphibolite Amphibolite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 1378.0 7.0 7.0 7.0 12.0 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6168909 399151
alder.2694 2694 JU23 Dalby Amphibolite Amphibolite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Hornblende Plateau age 1471.0 27.0 27.0 27.0 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6168909 399151
alder.2695 2695 SCA4A Veberöd Gneiss Grey gneiss Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 892.0 3.0 3.0 3.0 0.67000002 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6167320 402080
alder.2696 2696 SCA4C1 Veberöd Schist Ms-Bt schist Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 1050.0 3.0 3.0 3.0 1.84000003 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6167280 402060
alder.2697 2697 SCA4C1 Veberöd Schist Ms-Bt schist Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Muscovite Plateau age 884.0 2.0 2.0 2.0 0.66000003 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6167280 402060
alder.2698 2698 SCA4H Veberöd Granite Granite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 893.0 2.0 2.0 2.0 2.42000008 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6167320 402080
alder.2699 2699 SCA4H Veberöd Granite Granite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Muscovite Plateau age 882.0 2.0 2.0 2.0 1.03999996 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6167320 402080
alder.2700 2700 JU8B Romeleklint Gneiss Grey gneiss Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 922.0 5.0 5.0 5.0 10.0 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6165164 402460
alder.2701 2701 JU9B Romeleklint Amphibolite Amphibolite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 1073.0 3.0 3.0 3.0 3.1400001 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6165113 402512
alder.2702 2702 JU9B Romeleklint Amphibolite Amphibolite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Hornblende Plateau age 1371.0 67.0 67.0 67.0 754.0 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6165113 402512
alder.2703 2703 SCA3C Stenberget Granitic gneiss Reddish granitic gneiss Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 1087.0 7.0 7.0 7.0 37.0 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6158430 406350
alder.2704 2704 SCA3D Stenberget Amphibolite Amphibolite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 1326.0 40.0 40.0 40.0 7.5 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6158160 406460
alder.2705 2705 SCA3D Stenberget Amphibolite Amphibolite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Hornblende Plateau age 1387.0 4.0 4.0 4.0 2.19000006 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6158160 406460
alder.2706 2706 SCA3E Stenberget Gneiss Grey gneiss Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 897.0 2.0 2.0 2.0 2.45000005 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6158160 406460
alder.2707 2707 SCA3F Stenberget Gneiss Grey gneiss Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 906.0 2.0 2.0 2.0 1.24000001 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6158160 406460
alder.2708 2708 SCA3F Stenberget Gneiss Grey gneiss Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Muscovite Plateau age 883.0 2.0 2.0 2.0 1.88 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6158160 406460
alder.2709 2709 JU13B Nygård Granofels Granofels Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 951.0 3.0 3.0 3.0 2.75999999 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6160608 407286
alder.2710 2710 SCA1C Beden Gneiss Grey gneiss Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 892.0 2.0 2.0 2.0 0.47 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6155510 411590
alder.2711 2711 SCA1D Beden Phyllite Phyllite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 897.0 2.0 2.0 2.0 2.30999994 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6155510 411590
alder.2712 2712 SCA1D Beden Phyllite Phyllite Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Muscovite Plateau age 891.0 2.0 2.0 2.0 1.53999996 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6155510 411590
alder.2713 2713 SCA1E Beden Schist Schist Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Biotite Plateau age 899.0 2.0 2.0 2.0 1.80999994 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6155510 411590
alder.2714 2714 SCA1E Beden Schist Schist Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Department of Geology, Lund University 6 Ar-Ar Step-wise heating Muscovite Plateau age 902.0 2.0 2.0 2.0 0.72000003 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6155510 411590
alder.2715 2715 JU31 Tåghusa Granite Hbl-Bt granite Linderödsåsen horst Blekinge-Bornholm orogen Blekinge-Bornholm orogen Stratigraphic position unknown Geological Survey of Norway 6 Ar-Ar Step-wise heating Hornblende Plateau age 1410.0 1.0 1.0 1.0 0.88 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6169696 443893
alder.2716 2716 JU31 Tåghusa Granite Hbl-Bt granite Linderödsåsen horst Blekinge-Bornholm orogen Blekinge-Bornholm orogen Stratigraphic position unknown Geological Survey of Norway 6 Ar-Ar Step-wise heating Biotite Plateau age 1131.0 9.0 9.0 9.0 223.0 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6169696 443893
alder.2717 2717 JU32 Nöteboda Gneiss Grey gneiss Linderödsåsen horst Blekinge-Bornholm orogen Blekinge-Bornholm orogen Stratigraphic position unknown Geological Survey of Norway 6 Ar-Ar Step-wise heating Biotite Plateau age 1156.0 4.0 4.0 4.0 3.70000005 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6167590 444790
alder.2718 2718 JU35 Stubbaröd Granite Reddish granite Linderödsåsen horst Blekinge-Bornholm orogen Blekinge-Bornholm orogen Stratigraphic position unknown Geological Survey of Norway 6 Ar-Ar Step-wise heating Biotite Plateau age 1276.0 1.0 1.0 1.0 1.32000005 4 Cooling age Not classified 2 sigma age error, weighted Mean Plateau Age Age plateau determined using the criteria of Dalrymple and Lanphere (1971). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6166725 447353
alder.2719 2719 ASC95035 Ravlunda Quartzite Mica quartzite Linderödsåsen horst Blekinge-Bornholm orogen Blekinge-Bornholm orogen Stratigraphic position unknown Geological Survey of Norway 6 Ar-Ar Step-wise heating Muscovite Plateau age 1188.0 7.0 7.0 7.0 20.0 4 Cooling age Not classified 2 sigma age error, Weighted Mean Age, the calculated weighted average of the most concordant gas release steps of the total number steps in the gas release spectrum (mini-plateau). Ulmius et al 2018 Ulmius, J., Möller, C., Page, L., Johansson, L. & Ganerød, M., 2018: The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40 Ar/ 39 Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research 307, 201-217. https://www.sciencedirect.com/science/article/pii/S0301926817302450 2018 xxx Feb 15, 2018, 11:37:52 AM fhm 1 6177599 448674
alder.2720 2720 N048 Lilla Ammås (appoximate coordinates) Eclogite Eclogite Lilla Ammås eclogite Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 972.0 14.0 14.0 14.0 8 1 Metamorphic age Not classified 2 sigma age error. Weighted average 207Pb:206Pb age of the zircon inclusions in garnet is 972+/-14 (2s) Ma and considered as the est estimate of the maximum age of the eclogites. The zircons are colourless, clear, rounded or elongated. Nearly all zircons are compositionally homogeneous. The weighted average 206/238 age is 966 +/-13 Ma. Johansson et al 2001 Johansson, L., Möller, C. & Söderlund, U., 2001: Geochronology of eclogite facies metamorphism in the Sveconorwegian Province of SW Sweden. Precambrian Research 106, 261-275. https://doi.org/10.1016/S0301-9268(00)00105-4 2001 xxx Feb 15, 2018, 3:14:19 PM fhm 1 6337000 361500
alder.2721 2721 N046 Lilla Ammås (appoximate coordinates) Eclogite Eclogite Lilla Ammås eclogite Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 952.0 15.0 15.0 15.0 10 1 Metamorphic age Not classified 2 sigma age error. Weighted average 207Pb:206Pb age of the zircon from heavy mineral concentrate is 952+/-14 (2s) Ma and the weighted 206Pb/238Pb age is 969 +/-13 Ma. No preferred age is given. Johansson et al 2001 Johansson, L., Möller, C. & Söderlund, U., 2001: Geochronology of eclogite facies metamorphism in the Sveconorwegian Province of SW Sweden. Precambrian Research 106, 261-275. https://doi.org/10.1016/S0301-9268(00)00105-4 2001 xxx Feb 15, 2018, 3:17:07 PM fhm 1 6337000 361500
alder.2722 2722 N049 Lilla Ammås (appoximate coordinates) Granite Granite dyke, deformed Ammås granite dyke Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock c. 1.46-1.29 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1403.0 15.0 15.0 15.0 420.0 35.0 6 0.80000001 5 Magmatic age Not classified 2 sigma age error. Zircon cores have a distinct oscillatory zoning typical for magmatic zircon, whereas the rims are dark and homogeneous in back-scattered images. Regression of core data yield ages of 1403+/-15 Ma (2s). Johansson et al 2001 Johansson, L., Möller, C. & Söderlund, U., 2001: Geochronology of eclogite facies metamorphism in the Sveconorwegian Province of SW Sweden. Precambrian Research 106, 261-275. https://doi.org/10.1016/S0301-9268(00)00105-4 2001 xxx Feb 16, 2018, 9:01:22 AM fhm 1 6337000 361500
alder.2723 2723 N049 Lilla Ammås (appoximate coordinates) Granite Granite dyke, deformed Ammås granite dyke Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock c. 1.46-1.29 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 963.0 22.0 22.0 22.0 259.0 65.0 4 1.70000005 1 Metamorphic age Not classified 2 sigma age error. Zircon cores have a distinct oscillatory zoning typical for magmatic zircon, whereas the rims are dark and homogeneous in back-scattered images. Regression of core data yield ages of 963+/-22 Ma (2s). Johansson et al 2001 Johansson, L., Möller, C. & Söderlund, U., 2001: Geochronology of eclogite facies metamorphism in the Sveconorwegian Province of SW Sweden. Precambrian Research 106, 261-275. https://doi.org/10.1016/S0301-9268(00)00105-4 2001 xxx Feb 16, 2018, 9:48:54 AM fhm 1 6337000 361500
alder.2724 2724 U7 Lilla Ammås (appoximate coordinates) Eclogite Eclogite Lilla Ammås eclogite Sveconorwegian Orogen Eastern Segment, lower unit Stratigraphic position unknown LIG, Swedish Museum of Natural History, Stockholm 1 U-Pb ID-TIMS Titanite Weighted average 206Pb/238U age 945.0 4.0 4.0 4.0 6 3 0.89999998 4 Cooling age Not classified Titanite inclusions in eclogite garnet. The weighted 206Pb/238U age of three concordant analyses is 945+/-4 Ma (2s, MSWD= 0.9) and is the most precise of the isotopic ages and considered as the best estimate. The weighted average 207Pb:206Pb age is 981 +/-17 Ma (2s, MSWD = 1.3). Age is interpreted to date cooling through titanite closure temperature. Johansson et al 2001 Johansson, L., Möller, C. & Söderlund, U., 2001: Geochronology of eclogite facies metamorphism in the Sveconorwegian Province of SW Sweden. Precambrian Research 106, 261-275. https://doi.org/10.1016/S0301-9268(00)00105-4 2001 xxx Feb 16, 2018, 9:57:03 AM fhm 1 6337000 361500
alder.2725 2725 S92-136 HB#1 Överturingen, Site 3, Långsillremon Gabbro Gabbro-diabase Turinge gabbrodiabase Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock GSDG c. 1.71-1.66 Ga Geochronology Laboratory at the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Hornblende Plateau age 1703.0 6.0 6.0 6.0 1.10000002 5 Magmatic age Not classified Well defined plateau 94% 39Ar release, MSWD=1.1. Integrated age: 1701 +/-6 Ma. Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:34:30 AM fhm 1 6926102 493244 17F5a
alder.2726 2726 S92-136 HB#2 Överturingen, Site 3, Långsillremon Gabbro Gabbro-diabase Turinge gabbrodiabase Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock GSDG c. 1.71-1.66 Ga Geochronology Laboratory at the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Hornblende Plateau age 1687.0 13.0 13.0 13.0 5.0 0 not known Not classified Not as good plateau as run #1 87% 39Ar release, MSWD=5.0. Integrated age: 1684 ± 5 Ma Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:34:34 AM fhm 1 6926102 493244 17F5a
alder.2727 2727 S92-136 BI#1 Överturingen, Site 3, Långsillremon Gabbro Gabbro-diabase Turinge gabbrodiabase Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock GSDG c. 1.71-1.66 Ga Geochronology Laboratory at the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Biotite Plateau age 1622.0 5.0 5.0 5.0 2.29999995 4 Cooling age Not classified Plateau age, 62% 39Ar release, MSWD=2.3. Integrated age: 1613 ± 4 Ma Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:34:41 AM fhm 1 6926102 493244 17F5a
alder.2728 2728 S92-136 BI#2 Överturingen, Site 3, Långsillremon Gabbro Gabbro-diabase Turinge gabbrodiabase Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock GSDG c. 1.71-1.66 Ga Geochronology Laboratory at the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Biotite Plateau age 1645.0 4.0 4.0 4.0 2.0999999 4 Cooling age Not classified Plateau age, 73% 39Ar release, MSWD=2.1. Integrated age: 1639 ± 4 Ma Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:34:47 AM fhm 1 6926102 493244 17F5a
alder.2729 2729 S92-120 BI Överturingen, Site 2, , Örnberget Gabbro Gabbro-diabase Turinge gabbrodiabase Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock GSDG c. 1.71-1.66 Ga Geochronology Laboratory at the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Biotite Plateau age 1627.0 11.0 11.0 11.0 0.69999999 4 Cooling age Not classified Well defined plateau 99% 39Ar release, MSWD=0.7. Integrated age: 1626 ± 11 Ma Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:38:10 AM fhm 1 6926553 490872 17E5j
alder.2730 2730 S92-113 Dike WR #1 Överturingen, Site 1, Örnberget Doleritic rock Basic dyke cutting Turinge gabbrodiabase Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock c. 1.20-1.17 Ga Geochronology Laboratory at the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Whole rock Plateau age 1205.0 4.0 4.0 4.0 2.79999995 5 Magmatic age Not classified Well defined plateau 57% 39Ar release, MSWD=2.8. Integrated age: 1253 ± 4 Ma Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:39:17 AM fhm 1 6927111 490358 17E5j
alder.2731 2731 S92-113 Dike WR #2 Överturingen, Site 1, Örnberget Doleritic rock Basic dyke Turinge gabbrodiabase Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock c. 1.20-1.17 Ga Geochronology Laboratory at the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Whole rock Plateau age 1194.0 5.0 5.0 5.0 2.29999995 5 Magmatic age Not classified Well defined plateau 59% 39Ar release, MSWD=2.3. Integrated age: 1221 ± 4 Ma Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:39:21 AM fhm 1 6927111 490358 17E5j
alder.2732 2732 Överturingen, Site 6, Malmmyran Gabbro Turinge gabbrodiabase Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Intrusive rock GSDG c. 1.71-1.66 Ga LIG, Swedish Museum of Natural History, Stockholm 1 U-Pb ID-TIMS Baddeleyite Weighted average 207Pb/206Pb age 1700.0 4.0 4.0 4.0 4 4 2.4000001 5 Magmatic age High reliabilty Baddeleyite grains were of excellent quality and up to ca 100 µm in longest dimension. The U-Pb analyses of four fractions of baddeleyite, of which three were single-grain analyses, plot less than 1% discordant forming a tight cluster immediately below the Concordia curve. Elming et al 2018 Elming, S.-Å., Layer, P. & Söderlund, U., 2018: Cooling history and age of magnetization of a deep intrusion: A new 1.7 Ga key pole and Svecofennian-post Svecofennian APWP for Baltica. Precambrian Research. https://doi.org/10.1016/j.precamres.2018.05.022 2018 xxx Oct 16, 2018, 11:40:18 AM fhm 1 6925103 491642 17F5a
alder.2733 2733 G16S12 Fänndystjärnen Doleritic rock Dolerite dyke Blekinge-Dalarna dolerite Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Intrusive rock c. 1.00-0.92 Ga LIG, Swedish Museum of Natural History, Stockholm 1 U-Pb ID-TIMS Baddeleyite Weighted average 207Pb/206Pb age 951.0 5.0 5.0 5.0 3 3 1.39999998 5 Magmatic age High reliabilty The extracted baddeleyite grains are dark to moderately brown. Grains from all samples are fresh without any trace of alteration. Three baddeleyite fractions are concordant at 951 ± 5 Ma (2s) Gong et al 2018 Gong, Z., Evans, D.A.D., Elming, S.-Å., Söderlund, U. & Salminen, J.M., 2018: Paleomagnetism, magnetic anisotropy and U-Pb baddeleyite geochronology of the early Neoproterozoic Blekinge-Dalarna dolerite dykes, Sweden. Precambrian Research 317, 14-32. https://doi.org/10.1016/j.precamres.2018.08.019 2018 xxx Oct 16, 2018, 1:42:31 PM fhm 1 6775782 438184 14D5i
alder.2734 2734 G16S22 Stormoren Doleritic rock Dolerite dyke Blekinge-Dalarna dolerite Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Intrusive rock c. 1.00-0.92 Ga LIG, Swedish Museum of Natural History, Stockholm 1 U-Pb ID-TIMS Baddeleyite Weighted average 207Pb/206Pb age 971.0 7.0 7.0 7.0 3 3 0.61000001 5 Magmatic age High reliabilty The extracted baddeleyite grains are dark to moderately brown. Grains from all samples are fresh without any trace of alteration. Three fractions were analyzed, of which two are concordant within uncertainty whereas one analysis is slightly discordant. The weighted mean of 207Pb/206Pb dates is 971 ± 7 Ma (2s, MSWD=0.61). Gong et al 2018 Gong, Z., Evans, D.A.D., Elming, S.-Å., Söderlund, U. & Salminen, J.M., 2018: Paleomagnetism, magnetic anisotropy and U-Pb baddeleyite geochronology of the early Neoproterozoic Blekinge-Dalarna dolerite dykes, Sweden. Precambrian Research 317, 14-32. https://doi.org/10.1016/j.precamres.2018.08.019 2018 xxx Oct 16, 2018, 2:03:15 PM fhm 1 6831382 405888 15D6c
alder.2735 2735 G16S37 Rotsjön Doleritic rock Dolerite dyke, probably the southern extension of the Nornäs dyke Nornäs dyke Blekinge-Dalarna dolerite Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Intrusive rock c. 1.00-0.92 Ga LIG, Swedish Museum of Natural History, Stockholm 1 U-Pb ID-TIMS Baddeleyite Weighted average 207Pb/206Pb age 947.0 4.0 4.0 4.0 3 3 2.79999995 5 Magmatic age High reliabilty The extracted baddeleyite grains are dark to moderately brown. Grains from all samples are fresh without any trace of alteration. Three fractions cluster at and just below the concordia curve. The weighted mean is 947 ± 4 Ma (2s, MSWD=2.8). Gong et al 2018 Gong, Z., Evans, D.A.D., Elming, S.-Å., Söderlund, U. & Salminen, J.M., 2018: Paleomagnetism, magnetic anisotropy and U-Pb baddeleyite geochronology of the early Neoproterozoic Blekinge-Dalarna dolerite dykes, Sweden. Precambrian Research 317, 14-32. https://doi.org/10.1016/j.precamres.2018.08.019 2018 xxx Oct 16, 2018, 2:03:22 PM fhm 1 6753997 451432 14E1b
alder.2736 2736 94001 Gaskkasjávri, Tarfala Granite Granite, sheared. At the boundary between the Mårma and Kebnekaise terranes Gaskkasjávri granite Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown LIG, Swedish Museum of Natural History, Stockholm 1 U-Pb ID-TIMS Titanite Upper intercept age 1217.0 11.0 11.0 11.0 487.0 7.0 5 5 0.89999998 2 Inherited age Not classified Five fractions of titanite of which the two finest ones were abraded. Regression of all fractions resulted in a discordia line with an upper intercept at 1217 ± 11 Ma, and a lower intercept at 487 ± 7 Ma (MSWD = 0.9); the finest fraction plotting close to the lower intercept. The age of 487 ± 7 Ma is interpreted as the growth of titanite during deformation-induced recrystallization of the Gaskkasjávri granite and cooling of the terrane boundary through the 650-700 °C U-Pb closure temperature of titanite. The upper intercept suggests an inherited Grenvillian component. Andréasson et al 2018 Andréasson, P.-G., Allen, A., Aurell, O., Boman, D., Ekestubbe, J., Goerke, U., Lundgren, A., Nilsson, P. & Sandelin, S., 2018: Seve terranes of the Kebnekaise Mts., Swedish Caledonides, and their amalgamation, accretion and affinity. GFF 140, 264-291. https://www.tandfonline.com/doi/abs/10.1080/11035897.2018.1470200 2018 xxx Oct 16, 2018, 2:15:04 PM fhm 1 7538918 649006 29I7d
alder.2737 2737 94001 Gaskkasjávri, Tarfala Granite Granite, sheared. At the boundary between the Mårma and Kebnekaise terranes Gaskkasjávri granite Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown LIG, Swedish Museum of Natural History, Stockholm 1 U-Pb ID-TIMS Titanite Lower intercept age 487.0 7.0 7.0 7.0 5 5 0.89999998 1 Metamorphic age Not classified Five fractions of titanite of which the two finest ones were abraded. Regression of all fractions resulted in a discordia line with an upper intercept at 1217 ± 11 Ma, and a lower intercept at 487 ± 7 Ma (MSWD = 0.9); the finest fraction plotting close to the lower intercept. The age of 487 ± 7 Ma is interpreted as the growth of titanite during deformation-induced recrystallization of the Gaskkasjávri granite and cooling of the terrane boundary through the 650-700 °C U-Pb closure temperature of titanite. The upper intercept suggests an inherited Grenvillian component. Andréasson et al 2018 Andréasson, P.-G., Allen, A., Aurell, O., Boman, D., Ekestubbe, J., Goerke, U., Lundgren, A., Nilsson, P. & Sandelin, S., 2018: Seve terranes of the Kebnekaise Mts., Swedish Caledonides, and their amalgamation, accretion and affinity. GFF 140, 264-291. https://www.tandfonline.com/doi/abs/10.1080/11035897.2018.1470200 2018 xxx Oct 16, 2018, 3:10:54 PM fhm 1 7538918 649006 29I7d
alder.2738 2738 #4 n5267 Malmberget Felsic volcanic rock Felsic metavolcanic rock, host rock to the Malmberget iron ore deposit Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1885.0 6.0 6.0 6.0 14 1.29999995 5 Magmatic age Not classified A concordia age based on 14 concordant, oscillatory zoned, analysis, overlapping within error, yields 1885±6 Ma (MSWD of concordance and equivalence = 1.3) Sarlus et al 2018b Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2018: The Malmberget iron oxide-apatite deposit, Sweden; constraints from geochronology and geochemistry of host rocks. In: Sarlus, Z. (ed.): Timing and Origin of Igneous Rocks in the Gällivare area, Northern Sweden. PhD thesis, Luleå University of Technology. p. 1-27. http://www.diva-portal.org/smash/get/diva2:1215539/FULLTEXT01.pdf 2018 xxx Jun 12, 2019, 1:24:54 PM xxx 1 7461212 747365 28K2c
alder.2739 2739 #4 n5267 Malmberget Felsic volcanic rock Felsic metavolcanic rock, host rock to the Malmberget iron ore deposit Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1775.0 6.0 6.0 6.0 10 0.91000003 1 Metamorphic age Not classified CL-dark overgrowth rims were analyzed with a total of 19 spots where 10 analysis yield a concordant (Tera-Wasserburg) date of 1775±6 Ma (MSWD of concordance and equivalence = 0.91). Sarlus et al 2018b Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2018: The Malmberget iron oxide-apatite deposit, Sweden; constraints from geochronology and geochemistry of host rocks. In: Sarlus, Z. (ed.): Timing and Origin of Igneous Rocks in the Gällivare area, Northern Sweden. PhD thesis, Luleå University of Technology. p. 1-27. http://www.diva-portal.org/smash/get/diva2:1215539/FULLTEXT01.pdf 2018 xxx Jun 12, 2019, 1:25:06 PM xxx 1 7461212 747365 28K2c
alder.2740 2740 #10 n5260 Malmberget Intermediate volcanic rock Intermediate metavolcanic rock, host rock to the Malmberget iron ore deposit Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1881.0 6.0 6.0 6.0 3 1.5 5 Magmatic age Not classified Complex zircon. The three oldest, concordant and overlapping analyses within errors, yielded a concordia age of 1881±6 Ma (MSWD of concordance and equivalence = 1.5) and are interpreted to most closely represent the original magmatic crystallization age of the metavolcanic unit. Sarlus et al 2018b Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2018: The Malmberget iron oxide-apatite deposit, Sweden; constraints from geochronology and geochemistry of host rocks. In: Sarlus, Z. (ed.): Timing and Origin of Igneous Rocks in the Gällivare area, Northern Sweden. PhD thesis, Luleå University of Technology. p. 1-27. http://www.diva-portal.org/smash/get/diva2:1215539/FULLTEXT01.pdf 2018 xxx Jun 12, 2019, 2:08:24 PM xxx 1 7462445 746454 28K2c
alder.2741 2741 #10 n5260 Malmberget Intermediate volcanic rock Intermediate metavolcanic rock, host rock to the Malmberget iron ore deposit Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1797.0 7.0 7.0 7.0 5 3.0 1 Metamorphic age Not classified The obtained 207Pb/206Pb average age of 1797±7 Ma (MSWD = 3) from the 5 youngest near concordant and concordant analyses is interpreted to give an approximation of the age of metamorphic recrystallization. Sarlus et al 2018b Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2018: The Malmberget iron oxide-apatite deposit, Sweden; constraints from geochronology and geochemistry of host rocks. In: Sarlus, Z. (ed.): Timing and Origin of Igneous Rocks in the Gällivare area, Northern Sweden. PhD thesis, Luleå University of Technology. p. 1-27. http://www.diva-portal.org/smash/get/diva2:1215539/FULLTEXT01.pdf 2018 xxx Jun 12, 2019, 2:08:53 PM xxx 1 7462445 746454 28K2c
alder.2742 2742 #11 n5259 Malmberget Granite Granitic dyke Lina suite Svecokarelian Orogen Norrbotten lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1790.0 6.0 6.0 6.0 4 0.77999997 5 Magmatic age Not classified BSE bright homogenous zones in the zircon (rims) yield a concordia age of 1790±6 Ma (MSWD of concordance + equivalence = 0.78, n=4). A calculated 207Pb/206Pb weighted average age from 7 concordant and near-concordant analysis yields 1792±5 Ma (MSWD = 1.8, n=7) for the rims.The cores returned strongly discordant results that prohibits reasonable age interpretations Sarlus et al 2018b Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2018: The Malmberget iron oxide-apatite deposit, Sweden; constraints from geochronology and geochemistry of host rocks. In: Sarlus, Z. (ed.): Timing and Origin of Igneous Rocks in the Gällivare area, Northern Sweden. PhD thesis, Luleå University of Technology. p. 1-27. http://www.diva-portal.org/smash/get/diva2:1215539/FULLTEXT01.pdf 2018 xxx Jun 12, 2019, 2:39:08 PM xxx 1 7461894 745169 28K2c
alder.2743 2743 # 9 n5258 Malmberget Granite Granitic dyke Lina suite Svecokarelian Orogen Norrbotten lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1791.0 7.0 7.0 7.0 5 2.20000005 5 Magmatic age Not classified The five most concordant analysis yielded a concordia age of 1791±7 Ma (MSWD of conc. + equiv. = 2.2) and a 207Pb/206Pb weighted average age based on seven concordant analysis yields 1781±5 Ma (MSWD = 1.4). One core analysis yielding a 207Pb/206Pb age of ca. 1864 Ma represents inherited material. Sarlus et al 2018b Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2018: The Malmberget iron oxide-apatite deposit, Sweden; constraints from geochronology and geochemistry of host rocks. In: Sarlus, Z. (ed.): Timing and Origin of Igneous Rocks in the Gällivare area, Northern Sweden. PhD thesis, Luleå University of Technology. p. 1-27. http://www.diva-portal.org/smash/get/diva2:1215539/FULLTEXT01.pdf 2018 xxx Jun 12, 2019, 2:44:52 PM xxx 1 7462613 744697 28K2c
alder.2744 2744 Böda hamn (core drilling, sample from depth of 165.05–165.25 m.) Quartz monzodiorite Quartz monzodiorite, well-preserved, reddish grey porphyritic TIB-1 Svecokarelian Orogen Småland lithotectonic unit Intrusive rock GSDG c. 1.81-1.76 Ga Finnish Geosciences Research Laboratory, Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Concordant age 1799.0 4.0 4.0 4.0 41 31 0.92000002 0.64999998 5 Magmatic age Not classified Euhedral and mostly elongated zircon, many with oscillatory zoning, and with fractures and inclusions of titanite and garnet. Thirty one of the U-Pb analyses of the Böda Hamn quartz monzodiorite form a cluster with a concordia age of 1799 ± 4 Ma (MSWD of concordance and equivalence=0.92) which is almost identical to the 207Pb/206Pb weighted average age of 1797 ± 3 Ma (95% conf., MSWD=0.91). One data point has an older age of 1832 Ma, suggesting inheritance. A few data points show evidence of radiogenic lead loss or other disturbances; these and the inherited grain were excluded from the age calculations. Salin et al 2019 Salin, E., Sundblad, K., Woodard, J. & O'Brien, H., 2019: The extension of the Transscandinavian Igneous Belt into the Baltic Sea region. Precambrian Research 328, 287-308. https://doi.org/10.1016/j.precamres.2019.04.016 2019 xxx Jun 13, 2019, 8:32:42 AM fhm 1 6345900 625200 5H9f
alder.2745 2745 Valsnäs (core drilling, sample from depth of 201.50–201.60 m) Quartz monzonite Quartz momzonite, well-preserved, greyish red coarse-grained and porphyritic felsic with up to cm-size K-feldspar (microcline) and plagioclase megacrysts TIB-1 Svecokarelian Orogen Småland lithotectonic unit Intrusive rock GSDG c. 1.81-1.76 Ga Finnish Geosciences Research Laboratory, Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Concordant age 1788.0 5.0 5.0 5.0 19 14 1.29999995 0.14 5 Magmatic age Not classified Zircon is mostly euhedral, stubby or prismatic varying from colorless to pinkish and show oscillatory zoning. Many crystals contain inclusions of titanite, apatite and garnet. U-Pb data from cores yield a concordia age of 1788 ± 5 Ma (n=14). Four analyses mainly plot along the concordia at younger ages, which could be a result of disturbance 30-70 m.y. after the crystallization of the rock. These analyses and one with a large error correction were rejected from the age calculations. The U-Pb data from rims yield a concordia age of 1779 ± 15 Ma (n=7). Salin et al 2019 Salin, E., Sundblad, K., Woodard, J. & O'Brien, H., 2019: The extension of the Transscandinavian Igneous Belt into the Baltic Sea region. Precambrian Research 328, 287-308. https://doi.org/10.1016/j.precamres.2019.04.016 2019 xxx Jun 13, 2019, 8:50:09 AM fhm 1 6308220 614360 5H1d
alder.2746 2746 Frigsarve (percussion drilling) Granitoid Granitoid TIB-0 Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GSDG c. 1.87-1.82 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1845.0 4.0 4.0 4.0 12 10 1.29999995 0.15000001 5 Magmatic age Not classified Euhedral prismatic zircon grains with common oscillatory zoning. One discordant data point and one older data point were rejected from the age calculations. The remaining ten zircon domains yield a concordia age of 1845 ± 4 Ma (MSWD-value of concordance and equivalence of 1.3) and a 207Pb/206Pb weighted mean age of 1843 ± 4 Ma (95% conf., MSWD=1.16). Salin et al 2019 Salin, E., Sundblad, K., Woodard, J. & O'Brien, H., 2019: The extension of the Transscandinavian Igneous Belt into the Baltic Sea region. Precambrian Research 328, 287-308. https://doi.org/10.1016/j.precamres.2019.04.016 2019 xxx Jun 13, 2019, 10:39:55 AM fhm 1 6333971 702885 5J6a
alder.2747 2747 A2334 Knaften Wacke, greywacke Greywacke (sandstone) Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Finnish Geosciences Research Laboratory, Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1880.0 47 6 9 Maximum depositional age Not classified A relatively small amount of variably rounded zircon was obtained from this sample. A total of 47 analyses were made on 41 grains. Eleven of the grains had post-1.95 Ga ages, 19 grains 1.95-2.07 Ga, two grains 2.46-2.39 Ga and 9 grains 2.93-2.62 Ga Archean ages. The six youngest zircon ages (concordant within error) constrain the maximum depositional age of the sediments at 1.89-1.87 Ga. Wasström et al 2019 Wasström, A., Huhma, H., Lahtinen, R., Andersson, J. & Hellström, F., 2019: Pre-1.94 to post-1.88 Ga sediment depositional environment and c. 1.94 Ga felsic magmatism in the Knaften area, northern Sweden. GFF 141, 21-39. https://doi.org/10.1080/11035897.2019.1569126 2019 xxx Jun 13, 2019, 11:14:33 AM fhm 1 7147234 679969 21I9i
alder.2748 2748 MPT-3 Knaften Granite Granite, weakly porphyritic with quartz (<10 mm) and K-feldspar (<8 mm) phenocrysts and shows weak foliation. Knaften granitoid Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1939.0 3.0 3.0 3.0 11 11 0.98000002 0.44999999 5 Magmatic age Not classified Zircon in the granite occurs as subhedral to near euhedral, medium- to long prismatic grains. Oscillatory zoned with only subordinate disturbance of the zonation pattern, thin irregular BSE-dark porous internal alteration domains commonly developed along the crystal edges or along internal cracks. Weakly zoned or unzoned (BSE) domains define a tight age cluster that shows no indication of ancient Pb-loss. These analyses give a weighted average 207Pb/206Pb age of 1939 ± 3 Ma (MSWD = 0.98, probability = 0.45). Some of the data points are slightly discordant (spread in 206Pb/238U ratios) which disqualify calculation of a concordia age. Wasström et al 2019 Wasström, A., Huhma, H., Lahtinen, R., Andersson, J. & Hellström, F., 2019: Pre-1.94 to post-1.88 Ga sediment depositional environment and c. 1.94 Ga felsic magmatism in the Knaften area, northern Sweden. GFF 141, 21-39. https://doi.org/10.1080/11035897.2019.1569126 2019 xxx Jun 13, 2019, 2:35:14 PM fhm 1 7156820 673560 22I1g
alder.2749 2749 MPT-3 Knaften Granite Granite, weakly porphyritic with quartz (<10 mm) and K-feldspar (<8 mm) phenocrysts and shows weak foliation. Knaften granitoid Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Finnish Geosciences Research Laboratory, Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1940.0 4.0 4.0 4.0 14 0.92000002 0.52999997 5 Magmatic age Not classified Excluding few data points with elevated common Pb, an average 207Pb/206Pb age of 1940 ± 4 Ma (MSWD = 0.92, probability = 0.53) can be calculated from 14 concordant data points. Wasström et al 2019 Wasström, A., Huhma, H., Lahtinen, R., Andersson, J. & Hellström, F., 2019: Pre-1.94 to post-1.88 Ga sediment depositional environment and c. 1.94 Ga felsic magmatism in the Knaften area, northern Sweden. GFF 141, 21-39. https://doi.org/10.1080/11035897.2019.1569126 2019 xxx Jun 13, 2019, 3:01:39 PM fhm 1 7156820 673560 22I1g
alder.2750 2750 MPT-27 Knaften Granitoid Quartz-feldspar porphyry dyke (granodioritic to tonalitic), cuts across deformed and altered either pillow lava, volcanic breccia or volcaniclastic rock Knaften granitoid dyke Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1939.0 4.0 4.0 4.0 8 6 1.70000005 0.06 5 Magmatic age Not classified Subhedral to near euhedral, medium- to long prismatic zircon. CL-images show oscillatory zonation. Most grains have unzoned BSE-bright shadings along rims and in core domains. Six out of totally eight analyses define a concordia age of 1939 ± 4 Ma (MSWD = 1.7, probability = 0.06), and a weighted average 207Pb/206Pb age of 1941 ± 4 Ma (MSWD = 0.4 probability = 0.9). One highly discordant analysis (>14%, n3499-03a cracked domain) and one significantly younger analysis (207Pb/206Pb age of 1806 ± 14 Ma n3499-05a) were excluded from age calculation. Wasström et al 2019 Wasström, A., Huhma, H., Lahtinen, R., Andersson, J. & Hellström, F., 2019: Pre-1.94 to post-1.88 Ga sediment depositional environment and c. 1.94 Ga felsic magmatism in the Knaften area, northern Sweden. GFF 141, 21-39. https://doi.org/10.1080/11035897.2019.1569126 2019 xxx Jun 13, 2019, 3:05:37 PM fhm 1 7155550 680800 22I1i
alder.2751 2751 SWF-9 Björshult Migmatite Migmatitic granite, strongly deformed and migmatized part of the Tjärnesjöintrusion Tjärnesjö intrusion Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock c. 1.46-1.29 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1349.0 5.0 5.0 5.0 24 12 0.87 5 Magmatic age Not classified 12 of 24 U-Pb analyses of oscillatory zoned zircons are less than 2% discordant and give an average 207Pb/206Pb age of 1349 ± 5 Ma (2s, MSWD = 0.87). A calculated discordia line through all 24 analyses gave an upper intercept at 1348 ± 14 Ma, which is identical to the weighted average age. The lower intercept at 833 ± 170 Ma may not be meaningful due to large uncertainty. Rimsa et al 2007b Rimša, A., Whitehouse, M.J., Johansson, L. & Piazolo, S., 2007: Brittle fracturing and fracture healing of zircon: An integrated cathodoluminescence, EBSD, U-Th-Pb, and REE study. American Mineralogist 92, 1213-1224. http://ammin.geoscienceworld.org/content/92/7/1213.abstract 2007 xxx Jun 13, 2019, 4:04:27 PM fhm 1 6339585 372270 5C8e
alder.2752 2752 SWF-9 Björshult Migmatite Migmatitic granite, strongly deformed and migmatized part of the Tjärnesjöintrusion Tjärnesjö intrusion Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock c. 1.46-1.29 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Lower intercept age 920.0 51.0 51.0 51.0 18 1.09000003 1 Metamorphic age Not classified Outer surfaces of the OZ crystals are extensively resorbed and have cavities filled with the CL-bright zircon. Dates obtained from the CL-bright zones range between ca 1400 and 960 Ma and may reflect mixing of differing amounts of two zircon components. A discordia line through thirteen points has an upper intercept at 1367 ± 32 Ma and lower intercept at 920 ± 51 Ma (2s, MSWD = 1.4); The interpretation of the data for CL-bright zircon is that the upper intercept represents the oscillatory zoned zircon component, whereas the lower intercept indicates the age of the CL-bright zones. Fracturing and crack-sealing with CL-bright zircon occurred during the Sveconorwegian deformation. Rimsa et al 2007b Rimša, A., Whitehouse, M.J., Johansson, L. & Piazolo, S., 2007: Brittle fracturing and fracture healing of zircon: An integrated cathodoluminescence, EBSD, U-Th-Pb, and REE study. American Mineralogist 92, 1213-1224. http://ammin.geoscienceworld.org/content/92/7/1213.abstract 2007 xxx Jun 13, 2019, 4:17:01 PM fhm 1 6339585 372270 5C8e
alder.2753 2753 SWF-9 Björshult Migmatite Migmatitic granite, strongly deformed and migmatized part of the Tjärnesjöintrusion Tjärnesjö intrusion Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock c. 1.46-1.29 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 960.0 16.0 16.0 16.0 10 0.23 1 Metamorphic age Not classified Data from the sector zoned CL-dark zircon rims are concordant with a weighted average 207Pb/206Pb age of 960 ± 16 Ma (2s, MSWD = 0.23, n = 10). The intrepretation is that the sector zoned CL-dark zircon rims formed during partial melting in the Tjärnesjö intrusion during Sveconorwegian metamorphism. Rimsa et al 2007b Rimša, A., Whitehouse, M.J., Johansson, L. & Piazolo, S., 2007: Brittle fracturing and fracture healing of zircon: An integrated cathodoluminescence, EBSD, U-Th-Pb, and REE study. American Mineralogist 92, 1213-1224. http://ammin.geoscienceworld.org/content/92/7/1213.abstract 2007 xxx Jun 13, 2019, 4:25:21 PM fhm 1 6339585 372270 5C8e
alder.2754 2754 V15-LH Lilla Hals, Lemunda Lithic greywacke Lithic wacke Middle formation Visingsö Group Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic 1.0-0.54 Ga Arizona LaserChron Center 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 932.0 28.0 28.0 28.0 109 9 Maximum depositional age Not classified The most prominent age peak is at 1870 Ma, with three moderatepeaks at 1460, 1220, and 1040 Ma, and small age peaks at 1340, 1570, 1670, and 1720 Ma. The maximum depositional age of theyoungest five grains is 986 ± 41 Ma (MSWD=6.2, 2 sigma) and the youngest single grain is 932 ± 28 Ma. Pulsipher & Dehler 2019 Pulsipher, M.A. & Dehler, C.M., 2019: U-Pb detrital zircon geochronology, petrography, and synthesis of the middle Neoproterozoic Visingsö Group, Southern Sweden. Precambrian Research 320, 323-333. https://doi.org/10.1016/j.precamres.2018.11.011 2019 xxx Jun 13, 2019, 5:25:49 PM fhm 1 6493367 492365 8E9j
alder.2755 2755 V15-lGB Girabäcken Arkosic arenite Arkosic arenite Middle formation Visingsö Group Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic 1.0-0.54 Ga Arizona LaserChron Center 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 919.0 25.0 25.0 25.0 102 9 Maximum depositional age Not classified The 1800 Ma peak is the largest, followed by two moderate peaks at 1470 and 1030 Ma. Small peaks include from largest to smaller 1680, 1620, 1330, and 1220 Ma. The maximum depositional age using the five youngest grains is 957 ± 33 Ma (MSWD=3.7, 2 sigma) and the youngest single grain is 919 ± 25 Ma. Pulsipher & Dehler 2019 Pulsipher, M.A. & Dehler, C.M., 2019: U-Pb detrital zircon geochronology, petrography, and synthesis of the middle Neoproterozoic Visingsö Group, Southern Sweden. Precambrian Research 320, 323-333. https://doi.org/10.1016/j.precamres.2018.11.011 2019 xxx Jun 13, 2019, 5:26:41 PM fhm 1 6436544 470699 7E7e
alder.2756 2756 V15-uGB Girabäcken Quartzarenite Quartz arenite Lower formation Visingsö Group Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic 1.0-0.54 Ga Arizona LaserChron Center 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 934.0 36.0 36.0 36.0 102 9 Maximum depositional age Not classified The maximum depositional age using the youngest five grains is 941 ± 12 Ma (MSWD=0.26, 2 sigma) and the youngest single grain is 934 ± 36 Ma. The most dominant peak at ca. 1020 Ma. Other age peaks include 1330, 1450, 1550, 1690, and 1780 Ma Pulsipher & Dehler 2019 Pulsipher, M.A. & Dehler, C.M., 2019: U-Pb detrital zircon geochronology, petrography, and synthesis of the middle Neoproterozoic Visingsö Group, Southern Sweden. Precambrian Research 320, 323-333. https://doi.org/10.1016/j.precamres.2018.11.011 2019 xxx Jun 13, 2019, 5:43:39 PM fhm 1 6436463 471068 7E7e
alder.2757 2757 V15-BN Södergården, 3 km NNE of Gränna Feldspathic graywacke Arkosic wacke Upper formation Visingsö Group Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic 1.0-0.54 Ga Arizona LaserChron Center 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1001.0 28.0 28.0 28.0 106 9 Maximum depositional age Not classified There are three similarly sized larger peaks at 1460-1500, 1600, and 1800 Ma. Smaller peaks include 1670, 1220, 1160 and 1000 Ma. The maximum depositional age of the youngest five grains is 1108 ± 99 Ma (MSWD=36, 2 sigma) and the youngest single grain is 1001 ± 28 Ma. Pulsipher & Dehler 2019 Pulsipher, M.A. & Dehler, C.M., 2019: U-Pb detrital zircon geochronology, petrography, and synthesis of the middle Neoproterozoic Visingsö Group, Southern Sweden. Precambrian Research 320, 323-333. https://doi.org/10.1016/j.precamres.2018.11.011 2019 xxx Jun 13, 2019, 5:43:43 PM fhm 1 6434657 469264 7E7e
alder.2758 2758 V15-Vis-0.2 Näs, Visingsö (southern part) Subarkose Subarkosic arenite Middle formation Visingsö Group Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic 1.0-0.54 Ga Arizona LaserChron Center 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1105.0 26.0 26.0 26.0 104 9 Maximum depositional age Not classified In order of age peak prominence, the largest peak is 1800 Ma, followed by 1700, 1520, and 1340 Ma, and lastly, 1600 and 1210 Ma.The maximum depositional age of the youngest five grains is 1152 ± 42 Ma (MSWD=5.2, 2 sigma) and the youngest single grain is 1105 ± 26 Ma. Pulsipher & Dehler 2019 Pulsipher, M.A. & Dehler, C.M., 2019: U-Pb detrital zircon geochronology, petrography, and synthesis of the middle Neoproterozoic Visingsö Group, Southern Sweden. Precambrian Research 320, 323-333. https://doi.org/10.1016/j.precamres.2018.11.011 2019 xxx Jun 13, 2019, 5:43:48 PM fhm 1 6428749 458272 7E6c
alder.2759 2759 V15-Vis-72.6 Stigby, Visingsö (southern part) Subarkose Subarkosic arenite Upper formation Visingsö Group Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic 1.0-0.54 Ga Arizona LaserChron Center 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1197.0 22.0 22.0 22.0 104 9 Maximum depositional age Not classified The 1450 Ma peak is the largest, followed by moderate peaks at 1700, 1650, 1800, and 1320 Ma, with a small peak at 1250 Ma. The maximum depositional age of the youngest five grains is 1227 ± 31 Ma (MSWD=3.2, 2 sigma) and the youngest single grain is 1197 ± 22 Ma. Pulsipher & Dehler 2019 Pulsipher, M.A. & Dehler, C.M., 2019: U-Pb detrital zircon geochronology, petrography, and synthesis of the middle Neoproterozoic Visingsö Group, Southern Sweden. Precambrian Research 320, 323-333. https://doi.org/10.1016/j.precamres.2018.11.011 2019 xxx Jun 13, 2019, 5:54:46 PM fhm 1 6429735 459543 7E6c
alder.2760 2760 Ytterby Pegmatite Niobium-yttrium-fluorine (NYF) type pegmatite Ytterby pegmatite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Department of Earth Sciences, University of Gothenburg 4 Re-Os Laser ICP-MS Molybdenite Weighted average age 1809.0 23.0 23.0 23.0 19 19 0.72000003 5 Magmatic age Not classified In situ Re-Os dating of molybdenite by LA-ICP-MS/MSe. Weighted average Re-Os age of 1809 +/-23 Ma (n=19, 95% confidence). Hogmalm et al 2019 Hogmalm, K.J., Dahlgren, I., Fridolfsson, I. & Zack, T., 2019: First in situ Re-Os dating of molybdenite by LA-ICP-MS/MS. Mineralium Deposita 54, 821-828. https://doi.org/10.1007/s00126-019-00889-1 2019 xxx Jan 15, 2020, 10:45:33 AM fhm 1 6592332 690226 10I8i
alder.2761 2761 Bk1519(90-120) Västgötesjön Rhyolite Metarhyolite, cummingtonite-rich quartz-Kspar phyric Sångshyttan formation Grythyttan slate belt Grythyttan field Sveconorwegian Orogen Eastern Segment, upper unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Korean Basic Science Institute 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1895.0 4.0 4.0 4.0 31 19 0.60000002 5 Magmatic age Not classified Weighted mean of 204Pb corrected 207Pb/206Pb ages of concordant U-Th-Pb isotopic results = 1895.1 +/- 4.4 Ma. Zircon size fraction: 90-120 µm Kuipers et al 2018 Kuipers, G., Beunk, F.F., Yi, K. & van der Wateren, F.M., 2018: The Palaeoproterozoic Grythyttan Field in the Svecofennian Orogen, West Bergslagen, Central Sweden: structure, stratigraphy and age. Norwegian Journal of Geology/Norsk Geologisk Forening 98. https://dx.doi.org/10.17850/njg98-3-05 2018 xxx Jan 15, 2020, 2:29:56 PM fhm 1 6608816 471594 6611451 1426139 11E2f
alder.2762 2762 Bk1519(120-180) Västgötesjön Rhyolite Metarhyolite, cummingtonite-rich quartz-Kspar phyric Sångshyttan formation Grythyttan slate belt Grythyttan field Sveconorwegian Orogen Eastern Segment, upper unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Korean Basic Science Institute 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1895.0 5.0 5.0 5.0 18 15 1.29999995 5 Magmatic age Not classified Weighted mean of 204Pb corrected 207Pb/206Pb ages of concordant U-Th-Pb isotopic results = 1894.6 +/- 5.1 Ma. rcon size fraction: 120-180 µm. Kuipers et al 2018 Kuipers, G., Beunk, F.F., Yi, K. & van der Wateren, F.M., 2018: The Palaeoproterozoic Grythyttan Field in the Svecofennian Orogen, West Bergslagen, Central Sweden: structure, stratigraphy and age. Norwegian Journal of Geology/Norsk Geologisk Forening 98. https://dx.doi.org/10.17850/njg98-3-05 2018 xxx Jan 15, 2020, 2:30:03 PM fhm 1 6608816 471594 6611451 1426139 11E2f
alder.2763 2763 Bk1306-08 Sirsjön Rhyolite Felsic volcaniclastic rock, massive to variably foliated, fine-grained, aphyric to quartz-Kspar phyric (=2 mm). Combined samples Bk1306 & Bk1308 Grythyttan Slate Formation, Lonnhöjden member Grythyttan slate belt Grythyttan field Sveconorwegian Orogen Eastern Segment, upper unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Korean Basic Science Institute 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1895.0 4.0 4.0 4.0 16 0.75999999 5 Magmatic age Not classified Weighted mean of 204Pb corrected 207Pb/206Pb ages of concordant U-Th-Pb isotopic results = 1895.2 +/- 4.0 Ma. Prismatic bipyramidal, semi-transparent and slightly pinkish coloured zircon Kuipers et al 2018 Kuipers, G., Beunk, F.F., Yi, K. & van der Wateren, F.M., 2018: The Palaeoproterozoic Grythyttan Field in the Svecofennian Orogen, West Bergslagen, Central Sweden: structure, stratigraphy and age. Norwegian Journal of Geology/Norsk Geologisk Forening 98. https://dx.doi.org/10.17850/njg98-3-05 2018 xxx Jan 15, 2020, 2:30:12 PM fhm 1 6608926 473713 6611536 1428260 11E2f
alder.2764 2764 Bk1307 Sirsjön Rhyolite Felsic volcaniclastic rock, massive to variably foliated, fine-grained, aphyric to quartz-Kspar phyric (=2 mm) Grythyttan Slate Formation, Lonnhöjden member Grythyttan slate belt Grythyttan field Sveconorwegian Orogen Eastern Segment, upper unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Korean Basic Science Institute 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1895.0 3.0 3.0 3.0 23 0.51999998 5 Magmatic age Not classified Weighted mean of 204Pb corrected 207Pb/206Pb ages of concordant U-Th-Pb isotopic results = 1894.5 +/- 2.8 Ma. Prismatic bipyramidal, semi-transparent and slightly pinkish coloured zircon Kuipers et al 2018 Kuipers, G., Beunk, F.F., Yi, K. & van der Wateren, F.M., 2018: The Palaeoproterozoic Grythyttan Field in the Svecofennian Orogen, West Bergslagen, Central Sweden: structure, stratigraphy and age. Norwegian Journal of Geology/Norsk Geologisk Forening 98. https://dx.doi.org/10.17850/njg98-3-05 2018 xxx Jan 15, 2020, 2:52:03 PM fhm 1 6608926 473713 6611536 1428260 11E2f
alder.2765 2765 Bk1313 Limmingsjön Felsic volcanic rock Felsic volcaniclastic rock, very fine-grained (<50 µm), aphyric, sericitic Grythyttan Slate Formation, Hällefors Member Grythyttan slate belt Grythyttan field Svecokarelian Orogen Eastern Segment, upper unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Korean Basic Science Institute 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1895.0 4.0 4.0 4.0 11 10 1.39999998 5 Magmatic age Not classified Weighted mean of 204Pb corrected 207Pb/206Pb ages of concordant U-Th-Pb isotopic results = 1894.7 +/- 4.0 Ma. <60 µm, short prismatic, bipyramidal, transparent, slightly reddish to colourless zircons. Kuipers et al 2018 Kuipers, G., Beunk, F.F., Yi, K. & van der Wateren, F.M., 2018: The Palaeoproterozoic Grythyttan Field in the Svecofennian Orogen, West Bergslagen, Central Sweden: structure, stratigraphy and age. Norwegian Journal of Geology/Norsk Geologisk Forening 98. https://dx.doi.org/10.17850/njg98-3-05 2018 xxx Jan 15, 2020, 2:52:07 PM fhm 1 6606067 472722 6608687 1427234 11E1f
alder.2766 2766 COSC1_28 COSC-1, Åre Hydrothermal dyke or segregation Secondary calcit in vein (micro-karsts) at 178 m depth, COSC-drilling site 1. Late karst calcite population. Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Geochronology and Tracers Facility, British Geological Survey (Nottingham, UK) 1 U-Pb Laser ICP-MS Calcite Lower intercept age 2.5 0.2 0.2 0.2 0.89999998 6 Hydrothermal age Not classified 2.5 +/- 0.2 Ma (MSWD = 0.9). Minimum age for micro-karst formation. Drake et al 2020 Drake, H., Roberts, N.M.W. & Whitehouse, M.J., 2020: Geochronology and Stable Isotope Analysis of Fracture-Fill and Karst Mineralization Reveal Sub-Surface Paleo-Fluid Flow and Microbial Activity of the COSC-1 Borehole, Scandinavian Caledonides. Geosciences 10, 56. https://www.mdpi.com/2076-3263/10/2/56 2020 xxx Feb 5, 2020, 10:10:53 AM fhm 1 7031598 410235 19D7d
alder.2767 2767 COSC1_28 COSC-1, Åre Hydrothermal dyke or segregation Secondary calcit in vein (micro-karsts) at 178 m depth, COSC-drilling site 1. Late karst calcite population. Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Geochronology and Tracers Facility, British Geological Survey (Nottingham, UK) 1 U-Pb Laser ICP-MS Calcite Lower intercept age 9.6 1.3 1.3 1.3 1.39999998 6 Hydrothermal age Not classified 9.6 +/- 1.3 Ma (MSWD = 1.4). Minimum age for micro-karst formation. Drake et al 2020 Drake, H., Roberts, N.M.W. & Whitehouse, M.J., 2020: Geochronology and Stable Isotope Analysis of Fracture-Fill and Karst Mineralization Reveal Sub-Surface Paleo-Fluid Flow and Microbial Activity of the COSC-1 Borehole, Scandinavian Caledonides. Geosciences 10, 56. https://www.mdpi.com/2076-3263/10/2/56 2020 xxx Feb 5, 2020, 10:10:59 AM fhm 1 7031598 410235 19D7d
alder.2768 2768 KFM01D:519 Forsmark Pegmatite Pegmatitic matrix with primary uraninite. Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Uraninite Weighted average 207Pb/206Pb age 1802.0 5.0 5.0 5.0 3.5 5 Magmatic age Not classified Considering only the 50th percentile of 207Pb/206Pb ages (older than the median of 1787 ± 7 Ma), the age of the KFM01D uraninite is calculated to 1802 ± 5 Ma (MSWD 3.5). Age of primary uraninite formation and pegmatite emplacement. Intercept age: 1860 ± 94 Ma with an uncertain lower intercept at 231 ± 250 Ma (1s, MSWD 7.8). Krall et al 2019 Krall, L., Evins, L.Z., Kooijman, E., Whitehouse, M. & Tullborg, E.-L., 2019: Tracing the palaeoredox conditions at Forsmark, Sweden, using uranium mineral geochronology. Chemical Geology 506, 68-78. https://doi.org/10.1016/j.chemgeo.2018.12.013 2019 xxx Feb 5, 2020, 10:47:08 AM fhm 1 6699541 675711 12I9g
alder.2769 2769 KFM04A:899 Forsmark Pegmatite Hydrothermally altered pegmatitic matrix containing primary uraninite. Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Uraninite Upper intercept age 1803.0 18.0 18.0 18.0 310.0 34.0 3.70000005 5 Magmatic age Not classified Only unaltered uraninite grains give upper intercept age: 1803 ± 18 Ma, ( MSWD = 3.7, 1 s; lower intercept 310 ± 34 Ma). Age of primary uraninite formation and pegmatite emplacement. Krall et al 2019 Krall, L., Evins, L.Z., Kooijman, E., Whitehouse, M. & Tullborg, E.-L., 2019: Tracing the palaeoredox conditions at Forsmark, Sweden, using uranium mineral geochronology. Chemical Geology 506, 68-78. https://doi.org/10.1016/j.chemgeo.2018.12.013 2019 xxx Feb 5, 2020, 11:26:37 AM fhm 1 6698742 675288 12I9g
alder.2770 2770 KFR106:292, KFM04A:899 Forsmark Hydrothermal dyke or segregation Calcite and hematite vein in a pegmatite (KFR106) Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Uraninite Upper intercept age 1611.0 18.0 18.0 18.0 8.39999962 6 Hydrothermal age Not classified Pooled data of KFR106 and the altered regions of KFM04A. Alteration and precipitation: upper intercept age at 1611 ± 18 Ma, lower intercept of 176 ± 16 Ma (1s, MSWD 8.4). Krall et al 2019 Krall, L., Evins, L.Z., Kooijman, E., Whitehouse, M. & Tullborg, E.-L., 2019: Tracing the palaeoredox conditions at Forsmark, Sweden, using uranium mineral geochronology. Chemical Geology 506, 68-78. https://doi.org/10.1016/j.chemgeo.2018.12.013 2019 xxx Feb 5, 2020, 11:26:41 AM fhm 1 6701403 677897 12I9g
alder.2771 2771 KFM04A:899 Forsmark Pegmatite Pegmatite, hydrothermally altered. Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Vegacenter laboratory, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Haiweeite 207Pb/206Pb age 1200.0 1300.0 6 Hydrothermal age Not classified Major 207Pb/206Pb age group between 1.3 and 1.2 Ga. Krall et al 2019 Krall, L., Evins, L.Z., Kooijman, E., Whitehouse, M. & Tullborg, E.-L., 2019: Tracing the palaeoredox conditions at Forsmark, Sweden, using uranium mineral geochronology. Chemical Geology 506, 68-78. https://doi.org/10.1016/j.chemgeo.2018.12.013 2019 xxx Feb 5, 2020, 11:26:46 AM fhm 1 6698742 675288 12I9g
alder.2772 2772 KFM04A:899 Forsmark Pegmatite Pegmatite, hydrothermally altered. Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Vegacenter laboratory, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Uranophane 207Pb/206Pb age 300.0 400.0 6 Hydrothermal age Not classified Major 207Pb/206Pb age group between 400 and 300 Ma. Krall et al 2019 Krall, L., Evins, L.Z., Kooijman, E., Whitehouse, M. & Tullborg, E.-L., 2019: Tracing the palaeoredox conditions at Forsmark, Sweden, using uranium mineral geochronology. Chemical Geology 506, 68-78. https://doi.org/10.1016/j.chemgeo.2018.12.013 2019 xxx Feb 5, 2020, 11:59:12 AM fhm 1 6698742 675288 12I9g
alder.2773 2773 ÅJ14:06 n5605 Herräng Doleritic rock Metadolerite (N60W/85NE) Herräng dyke Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Titanite Weighted average 207Pb/206Pb age 1848.0 13.0 13.0 13.0 21 11 0.97000003 1 Metamorphic age Not classified Age calculated from 11 points with relatively low common lead contents (206Pb/204Pb ratios > 1000), resluting in weighted average 207Pb/206Pb age of 1848 ± 13 Ma (95% conf., MSWD = 0.97). Johansson & Karlsson 2020 Johansson, Å. & Karlsson, A., 2020: The “intraorogenic” Svecofennian Herräng mafic dyke swarm in east-central Sweden: age, geochemistry and tectonic significance. GFF, 1-22. https://doi.org/10.1080/11035897.2019.1708450 2020 xxx Feb 7, 2020, 10:02:59 AM fhm 1 6669840 702564 12J3b
alder.2774 2774 4 n5267, n5884 Malmberget Felsic volcanic rock Felsic metavolcanic rock Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1885.0 6.0 6.0 6.0 14 1.29999995 5 Magmatic age Not classified A concordia age based on the 14 oldest, concordant, osc. zoned analyses yielded 1885 ± 6 Ma (MSWD of conc. and eq. = 1.3). Analyses of 21 concordant and near-concordant spots yield a 207Pb-206Pb weighted average age of 1875 ± 7 Ma (MSWD = 2.6 at 95% confidence) Sarlus et al 2020 Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2020: Timing and origin of the host rocks to the Malmberget iron oxide-apatite deposit, Sweden. Precambrian Research 342, 105652. http://www.sciencedirect.com/science/article/pii/S0301926818303991 2020 xxx Mar 30, 2020, 7:57:38 AM fhm 1 7461212 747365 28K2c
alder.2775 2775 4 n5267, n5884 Malmberget Felsic volcanic rock Felsic metavolcanic rock Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1775.0 6.0 6.0 6.0 10 0.91000003 1 Metamorphic age Not classified 10 analyses of CL-dark unzoned overgrowth rims yielded a concordia age of 1775 ± 6 Ma (MSWD of conc. and equiv. = 0.91). A 207Pb-206Pb weighted average age = 1778 ± 4 (MSWD = 0,71, n=11). Sarlus et al 2020 Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2020: Timing and origin of the host rocks to the Malmberget iron oxide-apatite deposit, Sweden. Precambrian Research 342, 105652. http://www.sciencedirect.com/science/article/pii/S0301926818303991 2020 xxx Mar 30, 2020, 8:28:15 AM fhm 1 7461212 747365 28K2c
alder.2776 2776 10 n5260 Malmberget, sampled underground at Viri 1000 U-ort. Intermediate volcanic rock Intermediate metavolcanic rock Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1881.0 6.0 6.0 6.0 3 1.5 5 Magmatic age Not classified Regression through the discordant data points and the three oldest concordant analyses yields upper and lower intercept ages of 1884 ± 7 and 674 ± 70 Ma, respectively (MSWD = 1.3, n = 11). The three oldest concordant analyses, overlapping within error, return a concordia age of 1881 ± 6 Ma MSWD of conc. and equiv. = 1.5) and a 207Pb/206Pb weighted average date of 1882 ± 17 (MSWD = 3, 95% confidence). Sarlus et al 2020 Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2020: Timing and origin of the host rocks to the Malmberget iron oxide-apatite deposit, Sweden. Precambrian Research 342, 105652. http://www.sciencedirect.com/science/article/pii/S0301926818303991 2020 xxx Mar 30, 2020, 8:28:27 AM fhm 1 7462445 746454 28K2c
alder.2777 2777 10 n5260 Malmberget, sampled underground at Viri 1000 U-ort. Intermediate volcanic rock Intermediate metavolcanic rock Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1797.0 7.0 7.0 7.0 5 3.0 1 Metamorphic age Not classified Average age of 1797 ± 7 Ma from 5 of the youngest near concordant and concordant analyses of BSE-bright patchy zircon areas that overlap in age. The total range in age of this zircon type 1809 ± 3 Ma to 1774 ± 3 Ma. Sarlus et al 2020 Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2020: Timing and origin of the host rocks to the Malmberget iron oxide-apatite deposit, Sweden. Precambrian Research 342, 105652. http://www.sciencedirect.com/science/article/pii/S0301926818303991 2020 xxx Mar 30, 2020, 8:28:31 AM fhm 1 7462445 746454 28K2c
alder.2778 2778 11 n5259 Malmberget Granite Granite dyke within the Malmberget deposit. A 0.5 m wide, weakly foliated granitic dyke which crosscuts a magnetite ore lens and has subsequently been boudinaged and back-veined by remobilized ore material during metamorphism. Lina suite Svecokarelian Orogen Norrbotten lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1790.0 6.0 6.0 6.0 4 0.77999997 5 Magmatic age Not classified Concordant and within error overlapping analyses in BSE bright homogenous zones (rims) yield a concordia age of 1790 ± 6 Ma (MSWD of concordance + equivalence = 0.78, n = 4). 207Pb/206Pb weighted average age =1792 ± 5 Ma (MSWD = 1.8, n = 7). Sarlus et al 2020 Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2020: Timing and origin of the host rocks to the Malmberget iron oxide-apatite deposit, Sweden. Precambrian Research 342, 105652. http://www.sciencedirect.com/science/article/pii/S0301926818303991 2020 xxx Mar 30, 2020, 8:28:39 AM fhm 1 7461894 745169 28K2c
alder.2779 2779 9 n5258 Malmberget Granite Granite dyke within the Malmberget deposit, medium grained and foliated. Lina suite Svecokarelian Orogen Norrbotten lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1791.0 7.0 7.0 7.0 5 2.20000005 5 Magmatic age Not classified The five most concordant analyses yielded a concordia age of 1791 ± 7 Ma (MSWD of conc. + equiv. = 2.2). A 207Pb/206Pb weighted average age based on seven concordant analyses yielded 1781 ± 5 Ma (MSWD = 1.4). Sarlus et al 2020 Sarlus, Z., Andersson, U.B., Martinsson, O., Bauer, T.E., Wanhainen, C., Andersson, J.B.H. & Whitehouse, M.J., 2020: Timing and origin of the host rocks to the Malmberget iron oxide-apatite deposit, Sweden. Precambrian Research 342, 105652. http://www.sciencedirect.com/science/article/pii/S0301926818303991 2020 xxx Mar 30, 2020, 8:28:46 AM fhm 1 7462613 744697 28K2c
alder.2780 2780 MJ1805-A Kittelfjäll Paragneiss Migmatitic paragneiss, kyanite- biotite-rich, garnet forms subhedral porphyroblasts Marsfjället gneiss unit Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter laboratory, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Zircon Concordant age 469.0 5.0 5.0 5.0 25 4 0.97000003 1 Metamorphic age Not classified 8 zircon rim analyses yield a lower intercept age of 474.8 ± 5.8 Ma (n = 8, MSWD = 1.9). the 206Pb/238U ages ranging from 493.1 ± 13 to 464.0 ± 11 Ma, Within the cluster, the subgroup of four concordant dates gives a concordia age of 469.0 ± 4.5 Ma (n = 4, MSWD = 0.97). Bukala et al 2020 Bukala, M., Majka, J., Walczak, K., Wlodek, A., Schmitt, M. & Zagórska, A., 2020: U-Pb Zircon Dating of Migmatitic Paragneisses and Garnet Amphibolite from the High Pressure Seve Nappe Complex in Kittelfjäll, Swedish Caledonides. Minerals 10, 1-23. https://www.mdpi.com/2075-163X/10/4/295 2020 xxx Mar 30, 2020, 8:28:55 AM fhm 1 7236715 519632 23F7g
alder.2781 2781 MJ1805-B Kittelfjäll Paragneiss Migmatitic paragneiss, garnet forms subhedral porphyroblasts Marsfjället gneiss unit Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter laboratory, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Zircon Upper intercept age 480.0 3.0 3.0 3.0 26 11 1.19000006 1 Metamorphic age Not classified 11 zircon rim analyses form a close group yielding a lower intercept at 479.5 ± 2.7 Ma (n = 11, MSWD = 1.19; ), with 206Pb/238U ages of 483.9 ± 4 - 477.6 ± 4 Ma. Bukala et al 2020 Bukala, M., Majka, J., Walczak, K., Wlodek, A., Schmitt, M. & Zagórska, A., 2020: U-Pb Zircon Dating of Migmatitic Paragneisses and Garnet Amphibolite from the High Pressure Seve Nappe Complex in Kittelfjäll, Swedish Caledonides. Minerals 10, 1-23. https://www.mdpi.com/2075-163X/10/4/295 2020 xxx Mar 30, 2020, 11:22:46 AM fhm 1 7236715 519632 23F7g
alder.2782 2782 MJ1802-A Kittelfjäll Paragneiss Migmatitic paragneiss, quartz-rich, garnet forms anhedral to subhedral grains. Marsfjället gneiss unit Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter laboratory, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Zircon Upper intercept age 473.0 5.0 5.0 5.0 50 32 1.10000002 1 Metamorphic age Not classified 32 Caledonian zircon rim analyses yield a lower intercept age of 473.0 ± 4.9 Ma (MSWD = 1.1) with 206Pb/238U ages ranging from 492.0 ± 32 to 462.4 ± 11 Ma. Bukala et al 2020 Bukala, M., Majka, J., Walczak, K., Wlodek, A., Schmitt, M. & Zagórska, A., 2020: U-Pb Zircon Dating of Migmatitic Paragneisses and Garnet Amphibolite from the High Pressure Seve Nappe Complex in Kittelfjäll, Swedish Caledonides. Minerals 10, 1-23. https://www.mdpi.com/2075-163X/10/4/295 2020 xxx Mar 30, 2020, 11:23:02 AM fhm 1 7237044 518984 23F7g
alder.2783 2783 MJ1801 Kittelfjäll Amphibolite Amphibolite, garnet-bearing Marsfjället gneiss unit Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter laboratory, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Zircon Concordant age 472.0 3.0 3.0 3.0 27 8 0.039 1 Metamorphic age Not classified Zircon cores and rims, as well as the homogenous grains yielded a wide group of Caledonian dates, with lower Intercept age of 474.8 ± 9.0 Ma (n = 22, MSWD = 0.72). Span of 206Pb/238U dates from 501.0 ± 17 to 464.8 ± 14 Ma. Concordant analyses give a concordia age of 471.7 ± 3.4 Ma (n = 8, MSWD = 0.039), excluding two outliers of 646 ± 25 Ma and 445 ± 11 Ma. Bukala et al 2020 Bukala, M., Majka, J., Walczak, K., Wlodek, A., Schmitt, M. & Zagórska, A., 2020: U-Pb Zircon Dating of Migmatitic Paragneisses and Garnet Amphibolite from the High Pressure Seve Nappe Complex in Kittelfjäll, Swedish Caledonides. Minerals 10, 1-23. https://www.mdpi.com/2075-163X/10/4/295 2020 xxx Mar 30, 2020, 1:02:33 PM fhm 1 7237671 517791 23F7g
alder.2784 2784 LIE-7:25-30m Lieteksavo Felsic volcanic rock Rhyodacite, feldspar porphyritic (1-3 mm), fine-grained, greyish red volcanic rock of pyroclastic origin Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Natural History Museum in London 1 U-Pb Laser ICP-MS Zircon Upper intercept age 1901.0 15.0 15.0 15.0 117.0 140.0 11 10 1.89999998 0 not known Not classified Zircons are brownish, translucent and often stubby, subhedral. CL images of zircon display oscillatory & sector zoning, blurred patterns are possibly an effect of dissolution and recrystallization. Intercept ages at 117 ± 140 and 1901 ± 15 Ma (MSWD=1.9, 95% conf.), one analysis excluded. Billström et al 2019 Billström, K., Evins, P., Martinsson, O., Jeon, H. & Weihed, P., 2019: Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield. Precambrian Research 321, 123-133. https://doi.org/10.1016/j.precamres.2018.12.003 2019 xxx Mar 31, 2020, 7:25:56 AM fhm 1 7506987 685707 7507170 1651632 29J1a
alder.2785 2785 LIE-7:25-30m Lieteksavo Felsic volcanic rock Rhyodacite, feldspar porphyritic (1-3 mm), fine-grained, greyish red volcanic rock of pyroclastic origin Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1867.0 17.0 17.0 17.0 421.0 38.0 5 4 1.79999995 0 not known Not classified Zircons are brownish, translucent and often stubby, subhedral. CL images of zircon display oscillatory & sector zoning, blurred patterns are possibly an effect of dissolution and recrystallization. Upper intercept age = 1867 ± 17 Ma (lower intercept=421 ± 38 Ma, MSWD = 1.8, 95% conf.), including two concordant data points. One spot of 1.82 Ga age excluded. Billström et al 2019 Billström, K., Evins, P., Martinsson, O., Jeon, H. & Weihed, P., 2019: Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield. Precambrian Research 321, 123-133. https://doi.org/10.1016/j.precamres.2018.12.003 2019 xxx Mar 31, 2020, 7:26:07 AM fhm 1 7506987 685707 7507170 1651632 29J1a
alder.2786 2786 TJÅ75311:85.4-95.66 Tjårojokka, drill core 75311; 85.4-95.66 m Andesite Meta-andesite, porphyritic Porphyrite group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1869.0 14.0 14.0 14.0 6 4 0.50999999 0 not known Not classified Small euhedral equant zircon grains to larger stubby prisms, oscillatory zoning is well developed. Same sample mount as in Edfelt et al 2006. Concordant data. Two younger data points at 1.83 Ga was excluded from calculated weighted average 207Pb/206Pb age of 1869 ± 14 Ma (MSWD=0.51, 95% conf.). Billström et al 2019 Billström, K., Evins, P., Martinsson, O., Jeon, H. & Weihed, P., 2019: Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield. Precambrian Research 321, 123-133. https://doi.org/10.1016/j.precamres.2018.12.003 2019 xxx Mar 31, 2020, 7:26:40 AM fhm 1 7514898 676624 7515200 1642650 29I3i
alder.2787 2787 Luoss-1 Luossavaara Felsic volcanic rock Rhyodacite, 3-6 mm large feldspar phenocrysts, recrystallized matrix. Hanging wall of the Luossavaara apatite iron ore deposit. Luossavaara formation Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Natural History Museum in London 1 U-Pb Laser ICP-MS Zircon Upper intercept age 1909.0 19.0 19.0 19.0 10 10 2.70000005 0 not known Not classified Zircons are transparent, have numerous cracks and are sub- to euhedral in shape with a width to length ratio of c. 1:2.5. Sector zoning, faint zoning, and resorbtion textures are commonly seen in CL images. Discordia anchored at 400 ± 100 Ma give upper intercept age for this rock is 1909 ± 19 Ma (MSWD=2.7, 95% conf.). Billström et al 2019 Billström, K., Evins, P., Martinsson, O., Jeon, H. & Weihed, P., 2019: Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield. Precambrian Research 321, 123-133. https://doi.org/10.1016/j.precamres.2018.12.003 2019 xxx Mar 31, 2020, 7:26:44 AM fhm 1 7538490 719714 29J7h
alder.2788 2788 Luoss-1 Luossavaara Felsic volcanic rock Rhyodacite, 3-6 mm large feldspar phenocrysts, recrystallized matrix. Hanging wall of the Luossavaara apatite iron ore deposit. Luossavaara formation Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1882.0 9.0 9.0 9.0 35 4 0 not known Not classified Zircons are transparent, have numerous cracks and are sub- to euhedral in shape with a width to length ratio of c. 1:2.5. Sector zoning, faint zoning, and resorbtion textures are commonly seen in CL images. Data is concordant or near concordant with 207Pb/206Pb ages between 1.90 and 1.80 Ga. The four oldest concordant analysis give weighted average 207Pb/206Pb age of 1882 ± 9 Ma (95% conf.) Billström et al 2019 Billström, K., Evins, P., Martinsson, O., Jeon, H. & Weihed, P., 2019: Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield. Precambrian Research 321, 123-133. https://doi.org/10.1016/j.precamres.2018.12.003 2019 xxx Mar 31, 2020, 7:26:51 AM fhm 1 7538490 719714 29J7h
alder.2789 2789 03Luoss01 Luossavaara Trachyandesite Trachyandesite (?), magnetite-titanite veined and altered "syenite porphyry" Luossavaara iron ore Kiirunavaara group Svecokarelian Orogen Norrbotten lithotectonic unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Titanite Weighted average 207Pb/206Pb age 1883.0 8.0 8.0 8.0 28 28 1.29999995 0 not known Not classified Titanite with irregular zoning, BSE-dark areas is not titanite, but other phases. A 207Pb/206Pb age based on all 28 data points is calculated to 1883 ± 8 Ma (MSWD = 1.3, 95% conf., Session 2 data) with no age difference between BSE bright and dark areas. Billström et al 2019 Billström, K., Evins, P., Martinsson, O., Jeon, H. & Weihed, P., 2019: Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield. Precambrian Research 321, 123-133. https://doi.org/10.1016/j.precamres.2018.12.003 2019 xxx Mar 31, 2020, 7:58:08 AM fhm 1 7538290 719271 7538040 1685610 29J7h
alder.2790 2790 NK7 Norra Kärr (approximate coordinates from map) Pegmatite Eudialyte bearing pegmatoid veins cross-cutting foliated grennaite of the Norra Kärr alkaline complex (strongly peralkaline nepheline syenite). Sample (NK7) was collected from drill core NKA09006 at a depth of 150.43 m. Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Stratigraphic position unknown Boston University 3 Sm-Nd ID-TIMS Eudialyte Isochron age 1144.0 53.0 53.0 53.0 6 4 1.89999998 5 Magmatic age Not classified 95% confidence, MSWD=1.9, n=4, initial 143Nd/144Nd ratio of 0.511169 ± 63. A regression of all samples yielded 1063 ± 200 Ma (MSWD=37, n=6). The cross-cutting pegmatoid veins are interpreted to have formed at 1.144 ± 0.053 Ga from crystallised products of low temperature (< 550 °C) partial melts of metamorphosed agpaitic nepheline syenite, i.e. ca. 350 million years after the magmatic intrusion of the Norra Kärr alkaline complex. Sjöqvist et al 2020 Sjöqvist, A.S.L., Zack, T., Honn, D.K. & Baxter, E.F., 2020: Modification of a rare-earth element deposit by low-temperature partial melting during metamorphic overprinting: Norra Kärr alkaline complex, southern Sweden. Chemical Geology 545 119640. https://doi.org/10.1016/j.chemgeo.2020.119640 2020 xxx Sep 11, 2020, 7:43:57 AM fhm 1 6440270 474260 7E8f
alder.2791 2791 DC11-200 Norra Kärr (approximate coordinates from map) Fenite Fenitised granite, hangingwall of the Norra Kärr alkaline complex Växjö granite TIB-1 Svecokarelian Orogen Småland lithotectonic unit Intrusive rock GSDG c. 1.81-1.76 Ga Department of Geosciences, University of Oslo 1 U-Pb Laser ICP-MS Zircon Upper intercept age 1500.0 12.0 12.0 12.0 -28.0 160.0 39 0.60000002 0.97000003 6 Hydrothermal age Not classified Euhedral, oscillatorily zoned zircon domains and anhedral interstitial domains are indistinguishable in age within errors. Upper intercept age of 1500±12 Ma (2s,MSWD=0.60, =0.97, n = 39), weighted mean 207Pb/206Pb age of 1501 ± 8 Ma (2s,MSWD=0.64, p=0.96, n=39). Sjöqvist et al 2017 Sjöqvist, A.S.L., Cornell, D.H., Andersen, T., Christensson, U.I. & Berg, J.T., 2017: Magmatic age of rare-earth element and zirconium mineralisation at the Norra Kärr alkaline complex, southern Sweden, determined by U–Pb and Lu–Hf isotope analyses of metasomatic zircon and eudialyte. Lithos 294-295 73-86. https://doi.org/10.1016/j.lithos.2017.09.023 2017 xxx Sep 11, 2020, 10:34:06 AM fhm 1 6440270 474200 7E8f
alder.2792 2792 MKA-052 Kaitijärvi Tonalite Tonalite, foliated & lineated, grey, even medium grained. Oldest intrusive unit in centre of Kukkola gneiss complex. Kukkola gneiss complex Svecokarelian Orogen Överkalix lithotectonic unit Archean >2.5 Ga Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 2711.0 8.0 8.0 8.0 50 38 1.39999998 0.043 5 Magmatic age Not classified Subhedral to euhedral oscillatory zoned zircon. Main cluster of 38 analyses show 207Pb/206Pb ages from 2754±37 Ma to 2645±39 Ma. No single concordia age for these data can be calculated. Weighted average mean age = 2711±8 Ma (95% conf., MSWD = 1.4, probability = 0.043, n=38). Three analyses are older with conc. age of 2931±26 Ma, interpreted as inherited zircon grains. Skyttä et al 2020 Skyttä, P., Määtta, M., Piippo, S., Kara, J., Käpyaho, A., Heilimo, E. & O'Brien, H., 2020: Constraints over the age of magmatism and subsequent deformation for the Neoarchean Kukkola Gneiss Complex, northern Fennoscandia. Bulletin of the Geological Society of Finland 92 (1), 19-38. https://doi.org/10.17741/bgsf/92.1.002 2020 xxx Sep 11, 2020, 10:40:20 AM fhm 1 7339029 910276 25N7e
alder.2793 2793 MKA-050 Nedre Vojakkala Tonalite Hornblende tonalite Variably foliated, black/white, weakly porphyritic, medium- (1-5 mm) / coarse (> 5 mm) grained. Kukkola gneiss complex flank, younger migmatising melt pulse. Kukkola gneiss complex Svecokarelian Orogen Överkalix lithotectonic unit Archean >2.5 Ga Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Concordant age 2675.0 10.0 10.0 10.0 39 15 5.4000001 0.02 5 Magmatic age Not classified Mostly subhedral, rounded, and typically fractured zircons, oscillatory zoned central areas and in some instances homogeneous BSE darker outer areas. No clear age difference between texturally different groups. Concordant data (2s level) from the textural groups give toghether a concordia age of 2675±10 Ma (MSWD of concordance = 5.4, probability of concordance = 0.020). Skyttä et al 2020 Skyttä, P., Määtta, M., Piippo, S., Kara, J., Käpyaho, A., Heilimo, E. & O'Brien, H., 2020: Constraints over the age of magmatism and subsequent deformation for the Neoarchean Kukkola Gneiss Complex, northern Fennoscandia. Bulletin of the Geological Society of Finland 92 (1), 19-38. https://doi.org/10.17741/bgsf/92.1.002 2020 xxx Sep 11, 2020, 10:58:09 AM fhm 1 7339334 911908 25N7f
alder.2794 2794 MKA-073 Vuono Granite Granite crosscutting older gabbro. Weakly foliated, reddish, porphyritic, medium (1-5 mm) / coarse (> 5 mm) grained. Immediately NE of Kukkola gneiss complex Haparanda suite Svecokarelian Orogen Överkalix lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1901.0 10.0 10.0 10.0 25 17 0.54000002 0.93000001 5 Magmatic age Not classified Subhedral and semi-angular zircon. Zoning is present mainly in the xenocrystic core parts. Discordia age of 1899±16 Ma & 654±460 Ma using all analyses (n=25). Selection of 17 concordant analyses give weighted average 207Pb/206Pb age of 1901±10 Ma (MSWD=0.54, probabilty=0.93). Skyttä et al 2020 Skyttä, P., Määtta, M., Piippo, S., Kara, J., Käpyaho, A., Heilimo, E. & O'Brien, H., 2020: Constraints over the age of magmatism and subsequent deformation for the Neoarchean Kukkola Gneiss Complex, northern Fennoscandia. Bulletin of the Geological Society of Finland 92 (1), 19-38. https://doi.org/10.17741/bgsf/92.1.002 2020 xxx Sep 11, 2020, 10:58:17 AM fhm 1 7330605 912551 25N5f
alder.2795 2795 SIP-066 Alanen Koijuvaara Tonalite Tonalite, foliated & lineated, grey, even grained, Fine (<1mm)/ medium (1-5 mm) Haparanda suite Svecokarelian Orogen Överkalix lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1887.0 9.0 9.0 9.0 24 22 0.66000003 0.87 5 Magmatic age Not classified Subhedral, subrounded and relatively fractured zircon and with xenocrystic cores in one third of grains. Discordia age = 1890±9 Ma & 41±190 Ma (MSWD=1.3), wdt mean 207Pb/206Pb age = 1887±9 Ma (95 % conf., MSWD = 0.66, probability = 0.87, n=22). Two older, inherited zircon analyses excluded. Skyttä et al 2020 Skyttä, P., Määtta, M., Piippo, S., Kara, J., Käpyaho, A., Heilimo, E. & O'Brien, H., 2020: Constraints over the age of magmatism and subsequent deformation for the Neoarchean Kukkola Gneiss Complex, northern Fennoscandia. Bulletin of the Geological Society of Finland 92 (1), 19-38. https://doi.org/10.17741/bgsf/92.1.002 2020 xxx Sep 11, 2020, 10:58:26 AM fhm 1 7348543 903431 25N9d
alder.2796 2796 SIP-085 Ruotimaa Granite Granite, magm. Foliation, no tectonic fabric, reddish, porphyritic coarse grained (>5 mm). North of an unexposed Archean dome Haparanda suite Svecokarelian Orogen Överkalix lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1885.0 9.0 9.0 9.0 21 18 0.94 0.52999997 5 Magmatic age Not classified Subhedral and sub-angular, fractured and partly heavily altered zircons, som with cores. Also euhedral and needle-like grains. Discordia age for all the data give intercept ages of 1882±11 Ma & 371±130 Ma, equivalent to the mean age of 1885±9 Ma ( MSWD = 0.94, probability = 0.53, n=18, three analyses excluded). Skyttä et al 2020 Skyttä, P., Määtta, M., Piippo, S., Kara, J., Käpyaho, A., Heilimo, E. & O'Brien, H., 2020: Constraints over the age of magmatism and subsequent deformation for the Neoarchean Kukkola Gneiss Complex, northern Fennoscandia. Bulletin of the Geological Society of Finland 92 (1), 19-38. https://doi.org/10.17741/bgsf/92.1.002 2020 xxx Sep 11, 2020, 11:34:46 AM fhm 1 7342767 893874 25N8b
alder.2797 2797 ALZ192004A Byngsbodberget Rhyolite Volcanic ash-sandstone of rhyodacitic composition, metamorphosed. Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1900.0 9.0 9.0 9.0 12 9 1.60000002 5 Magmatic age Not classified Concordia age of 1900 ± 9 Ma (n = 9), only including datapoints with individual discordance below 2.5%. 95% confidence, decay-constant errors included. A weighted mean 207Pb/206Pb age is calculated at 1903 ± 5 Ma based on the same datapoints included in the concordia age calculation. Lewerentz et al 2021 Lewerentz, A., Ripa, M. & Morris, G., 2021: Time constraints on the deposition of a mineralisation-proximal metavolcaniclastic rock at Byngsbodberget, northwest of Falun, Bergslagen, Sweden. GFF, 1-7. https://doi.org/10.1080/11035897.2021.1896573 2021 xxx Oct 5, 2021, 1:38:35 PM fhm 1 6724312 520095 13F5f
alder.2798 2798 NOR19013 Barsele Volcanic rock Hydrothermal altered, coeherent volcanic rock from the structural hanging wall of the Norra zone gold bearing VMS-deposit Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Trinity College, Dublin, Ireland 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1957.0 6.0 6.0 6.0 17 0.99000001 5 Magmatic age Not classified Weighted mean 207Pb/206Pb age: 1956.8 ± 6.47 Ma (n: 17, MSWD: 0.99, 4 analyses rejected), sample A from a hydrothermally altered volcanic rock.Concordia age: 1954 ± 1.95 Ma (MSWD=5) Sandlund 2021 Sandlund, M., 2021: U-Pb age constraints on the host rocks of the Barsele Norra Volcanogenic Massive Sulphide deposit, northern Sweden. Student thesis, Luleå University of Technology, 55 pp. http://ltu.diva-portal.org/smash/get/diva2:1593222/FULLTEXT01.pdf 2021 xxx Nov 30, 2021, 8:44:53 PM fhm 1 7216799 617070 23H3f
alder.2799 2799 NOR19005 Barsele Rhyolite Rhyolite-dacite, coherent, feldspar-porphyritic, post-mineralization dyke that crosscuts the mineralized volcanic sequence at the the Norra zone gold bearing VMS-deposit. Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Trinity College, Dublin, Ireland 1 U-Pb Laser ICP-MS Zircon Upper intercept age 1952.0 15.0 15.0 15.0 455.0 50.0 6 1.10000002 5 Magmatic age Not classified Upper intercept age: 1952.2 ± 14.5 Ma (n: 6, MSWD: 1.1, 6 analyses rejected), lower intercept age is 455.0 ± 49.6 Ma. Sandlund 2021 Sandlund, M., 2021: U-Pb age constraints on the host rocks of the Barsele Norra Volcanogenic Massive Sulphide deposit, northern Sweden. Student thesis, Luleå University of Technology, 55 pp. http://ltu.diva-portal.org/smash/get/diva2:1593222/FULLTEXT01.pdf 2021 xxx Nov 30, 2021, 8:45:01 PM fhm 1 7216792 617181 23H3f
alder.2800 2800 86011 S. Alvesta Quartz monzodiorite Gneissic quartz monzodiorite Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock GDG c. 1.73-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1725.0 4.0 4.0 4.0 25 24 22.0 5 Magmatic age Not classified Concordia age of 1725 ± 4 Ma (2s, n=22). Weighted average 207Pb/206Pb age: 1721 ± 5 Ma )MSWD (1.8, n=222). Th/U ratios = 0.40-1.0. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 10:55:47 AM fhm 1 6303666 470913 5E1g
alder.2801 2801 76314 Flackarp, W Glimåkra Granite Gneissic granite (adamellite according to PQ diagram) Protogine zone Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1698.0 6.0 6.0 6.0 25 20 2.79999995 5 Magmatic age Not classified Most zircons have magmatic appearance in BSE/CL, a few zircons have metamorphic overgrowths. Weighted average 207Pb/206Pb age of 1698 ± 6 Ma (MSWD = 2.8, 95% conf.), slighly reverse concordant. The Th/U = 0.38-1.02. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:41:49 PM fhm 1 6242631 438740 3D9h
alder.2802 2802 85015 Stenberget, Romeleåsen Granitic gneiss Red granitic gneiss, fine- to medium-grained, red, leucocratic and aplitic Protogine zone, Romeleåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1696.0 8.0 8.0 8.0 22 18 2.20000005 5 Magmatic age Not classified Bulk of the zircon appear to be of magmatic origin, some with metamorphic overgrowths/replacement. A weighted average 207Pb/206Pb age of 1696 ± 8 Ma (MSWD 2.2, 2s), is interpreted as the magmatic crystallization age.Th/U = 0.33-1.24. A spot in metamorphic domain show an concordant 1450 Ma Hallandian age. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:41:54 PM fhm 1 6158238 406235 2D2b
alder.2803 2803 85017 Vägasked, NW Höör Granodioritic gneiss Grey granodioritic gneiss, fine- to medium-grained Unknown unknown Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1693.0 6.0 6.0 6.0 27 22 1.10000002 5 Magmatic age Not classified Zircons are homogeneous in the centres to oscillatory zoned in the outer parts with CL-bright late magmatic overgrowths in two grains. Very thin outer metamorphic (?) rims. Weighted average 207Pb/206Pb age of 1693 ± 6 Ma (MSWD 1.1, n=22, 2s), interpreted as magmatic crystallization age. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:41:58 PM fhm 1 6209541 404894 3D2a
alder.2804 2804 84093 Mölle, Kullaberg Granite Gneissic granite, strongly foliated, medium-grained, pink Kullaberg peninsula horst Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1683.0 6.0 6.0 6.0 33 15 0.54000002 5 Magmatic age Not classified Fifteen of the magmatic-looking spots form a cluster on the concordia yielding a weighted average 207Pb/206Pb age of 1683 ± 6 Ma (MSWD 0.54, 2s), suggested to represent the protolith age. Other spots of magmatic appearance scatter towards both slightly higher and lower ages. Th/U=0.48-1.11. 4 spots plotting close to the concordia between 1420 and 1480 Ma being indicative of Hallandian metamorphism. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:42:02 PM fhm 1 6240915 344502 3B8i
alder.2805 2805 85018 Skäralid, Söderåsen Granite Gneissic granite, reddish, coarse-grained with feldspar megacrysts and abundant garnet, displaying a diffuse gneissic texture but lack strong foliation Söderåsen horst Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1684.0 11.0 11.0 11.0 37 18 2.79999995 5 Magmatic age Not classified The interiors of the zircons are variable dark, bright, patchy or zoned appearance, while thick rims are BSE-bright/CL-dark or finely banded, with occasional thin metamict zones. Results are complex, but eighteen spots from magmatic-looking zircon interiors form a cluster on the concordia yielding a weighted average 207Pb/206Pb age of 1684 ± 11 Ma (MSWD=2.8, 2s, Th/U = 0.31-0.59), interpreted to date magmatic crystallization. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:42:08 PM fhm 1 6211994 391428 3C3i
alder.2806 2806 85019 Björnamossa, NW, Örkelljunga Quartz syenite Quartz syenite (charnockitic), somewhat foliated but has no marked gneissic structure Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1698.0 7.0 7.0 7.0 32 11 0.15000001 5 Magmatic age Not classified Complex zircon population appears to contain local inherited cores, magmatically zoned or homogenous zircon and metamorphic rims. 11 spots with Th/U ratios above 0.40 yield a well-defined concordia age of 1698 ± 7 Ma (MSWD 0.15, 2s), taken to indicate the age of magmatic crystallization.The remaining twenty-one spots mostly scatter around the concordia in a semi-continuous way from 1700 to 1300 Ma, with one outlier almost at 1000 Ma. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:42:13 PM fhm 1 6243294 390311 3C9i
alder.2807 2807 85019 Björnamossa, NW, Örkelljunga Quartz syenite Quartz syenite (charnockitic), somewhat foliated but has no marked gneissic structure Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1460.0 7.0 7.0 7.0 6 4 2.4000001 1 Metamorphic age Not classified Four near concordant analyses from BSE-bright metamorphic overgrowths yield a weighted average 207Pb/206Pb age of 1460 ± 7 Ma (MSWD 2.3, 2s), taken as an estimate of the age of Hallandian metamorphism within the Eastern Segment in central Skåne. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 1:04:23 PM fhm 1 6243294 390311 3C9i
alder.2808 2808 84082 Önnestad Syenite Syenite, massive, medium-grained and dark greenish grey Protogine Zone, Nävlingeåsen horst Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock c. 1.27-1.20 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1221.0 6.0 6.0 6.0 19 19 5.0 5 Magmatic age Not classified Zircon are prismatic, clear and fracture-free, homogeneous BSE-dark and CL-bright with no or very faint zoning or other internal features. Well-defined concordia age of 1221 ± 6 Ma (MSWD 5.0, n=19, 2s), indicating the age of magmatic crystallization. Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:42:18 PM fhm 1 6211731 437259 3D2h
alder.2809 2809 84083 Åraslöv Granite Gneissic granite, reddish, augen-bearing. Gumlösa-Glimåkra granite massif Protogine zone Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock c. 1.27-1.20 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1218.0 4.0 4.0 4.0 21 18 2.5 5 Magmatic age Not classified Concordia age of 1218 ± 4 Ma (n = 18, MSWD 2.5, 2s). Th/U ratios = 0.15-0.46 Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:42:24 PM fhm 1 6218950 436310 3D4h
alder.2810 2810 86010 Vanås gods Quartz syenite Gneissic quartz syenite, coarse, reddish, gneissose Gumlösa-Glimåkra granite massif Protogine zone Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock c. 1.27-1.20 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1224.0 5.0 5.0 5.0 24 22 3.20000005 5 Magmatic age Not classified Concordia age of 1224 ± 5 Ma (n = 22, MSWD 3.2, 2s), interpreted to date magmatic crystallization. The Th/U = 0.20-0.77, Johansson 2021 Johansson, Å., 2021: Cleaning up the record – revised U-Pb zircon ages and new Hf isotope data from southern Sweden. GFF, 1-32. https://www.tandfonline.com/doi/abs/10.1080/11035897.2021.1939777 2021 xxx Dec 3, 2021, 12:48:27 PM fhm 1 6227266 440710 3D6i
alder.2811 2811 99004 n735 Arhagen (drillcore, 309.62 m depth) Sedimentary rock Metasedimentary rock, dark brown, fine-grained and massive rock, composed of quartz, plagioclase, biotite, with subordinate muscovite and accessory opaque, grains. schistose structure Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon 207Pb/206Pb age 1870.0 1870.0 3290.0 36 9 Maximum depositional age Not classified The majority of zircons (< 10% discordant) have 207Pb/206Pb dates fall within the 2.11-1.96 Ga age group. Four crystals have 207Pb/206Pb dates within the 2.6-2.2 Ga age interval and one spot analysis yields 207Pb/206Pb date of c. 3291 Ma. One zircon gave 207Pb/206Pb ages of 1.88 and 1.87 Ga (spots 01a and @29). It is the only crystal with this low age, and it cannot be excluded that this grain was accidently introduced during sample processing. Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 1:54:57 PM fhm 1 6425351 734785 7J4h
alder.2812 2812 n818, n6321 Audungs (drillcore, ca 320 m depth) Sedimentary rock Upper: Medium- to fine-grained, grey-green to pinkish grey, strong schistosity, composed of biotite, quartz and strongly sericite-altered feldspar. Lower: rounded quartz and sericite-altered and myrmekitic feldspar with subordinate interstitial biotite. Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon 207Pb/206Pb age 1970.0 1970.0 2950.0 41 9 Maximum depositional age Not classified The 207Pb/206Pb dates for analyses plotting < 10% discordant are 2.11-1.97 Ga and 2.95-2.63 Ga, respectively. One zircon, 00,009 @11, has a magmatically zoned core yielding a 207Pb/206Pb date of c. 2917 Ma (15% discordant, and a BSE-bright overgrowth with that gives a 207Pb/206Pb date of c. 2033 Ma (8% discordant). Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 1:55:03 PM fhm 1 6418324 740787 7J3i
alder.2813 2813 99003 n734 Stenstugu (drillcore) Sedimentary rock Metasedimentary gneissic rock, coarse, pink K-feldspar and large biotite flakes. Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon 207Pb/206Pb age 1970.0 1970.0 2950.0 27 9 Maximum depositional age Not classified The 207Pb/206Pb dates for analyses plotting < 10% discordant are 2.11-1.97 Ga and 2.95-2.63 Ga, respectively. Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 1:55:18 PM fhm 1 6420676 736610 7J4h
alder.2814 2814 99005 n736 Sandviken (drillcore, 354.59 m depth) Sedimentary rock Metasedimentary rock, pink, fine-grained massive rock with a diffuse fine foliation. The rock is mainly composed by feldspars and quartz Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon 207Pb/206Pb age 1970.0 1970.0 2950.0 27 9 Maximum depositional age Not classified The 207Pb/206Pb dates for analyses plotting < 10% discordant are 2.11-1.97 Ga and 2.95-2.63 Ga, respectively. Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 1:55:22 PM fhm 1 6417332 741129 7J3i
alder.2815 2815 n6320 Skäggs (drillcore) Orthogneiss Granodioritic gneiss, fine-grained, strongly schistose, composed of alternating 1 – 10 mm thick dark grey and 1 – 12 mm thick light grey layers, the latter with up to 5 mm large K-feldspar porphyroclasts. Skäggs orthogneiss Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1896.0 11.0 11.0 11.0 354.0 97.0 50 8 0.68000001 5 Magmatic age Not classified Eight < 20% discordant zircon analyses from light core domains, with or without oscillatory zoning, yield a discordia line with an upper intercept at 1896 ± 11 Ma (MSWD = 0.68, 95% conf.). Eighteen > 70% discordant spots from dark zircon margins yield a discordia line with an upper intercept at c. 1450 Ma. Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 1:55:30 PM fhm 1 6399139 705957 6J9b
alder.2816 2816 00006 and 00007 n816, n817 När (drillcore) Granodioritic gneiss Granodioritic gneiss with a thin (5 to 7 mm) layer of a grey amphibole-rich rock. The gneiss is a phaneritic fine- to medium-grained unequigranular rock, which consists of plagioclase, microcline, biotite and quartz. När grandiorite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1880.0 3.0 3.0 3.0 42 12 0.83999997 5 Magmatic age Not classified Twelve concordant analyses yield a concordia age of 1877.2 ± 4.3 Ma (MSWD = 1.7; 95% conf.) with a weighted average 07Pb/206Pb age of 1880.3 ± 3.4 Ma (MSWD = 0.84, 95% conf.). Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 1:55:34 PM fhm 1 6352085 717973 6J0d
alder.2817 2817 99001 n732 Kvarne (drillcore) Granite Granite, undeformed, porphyric and holocrystalline, dominated by microcline, quartz and plagioclase with minor chlorite and orthopyroxene Kvarne granite TIB-1 Svecokarelian Orogen unknown Intrusive rock GSDG c. 1.81-1.76 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1812.0 3.0 3.0 3.0 36 13 1.29999995 5 Magmatic age Not classified Thirteen concordant analyses from light homogeneous or weakly oscillatory zircon domains yield a concordia age of 1811.8 ± 3.5 Ma (MSWD = 1.8) with a weighted average 207Pb/206Pb age of 1812.0 ± 3.4 Ma (MSWD = 1.3; 95% conf.). Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 2:43:17 PM fhm 1 6319786 694467 5I3j
alder.2818 2818 99002 n733 Grötlingbo (drillcore) Granite Granite, holocrystalline undeformed and phaneritic, dominated by microcline, quartz and sericite-altered plagioclase, locally with a myrmekitic texture. Grötlingbo granite Post-Svecokarelian, Proterozoic rocks unknown Intrusive rock c. 1.53-1.45 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1482.0 5.0 5.0 5.0 33 12 0.74000001 5 Magmatic age Not classified Twelve concordant zircon analyses from the BSE-light inner parts of the grains have a concordia age of 1478.0 ± 5.9 Ma (MSWD = 2.1) with a weighted average 207Pb/206Pb age of 1482 ± 4.8 Ma (MSWD = 0.74; 95% conf.). Three analyses from homogeneous inherited cores record a weighted average 207Pb/206Pb age of 1853.8 ± 6.6 Ma (MSWD = 0.18). Sundblad et al 2021 Sundblad, K., Salin, E., Claesson, S., Gyllencreutz, R. & Billström, K., 2021: The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia. Precambrian Research 363, 106321. https://www.sciencedirect.com/science/article/pii/S0301926821002497 2021 xxx Dec 5, 2021, 2:43:23 PM fhm 1 6335827 708667 5J7b
alder.2819 2819 F90004 A382 Åkershult Rhyolite Felsic metavolcanic rock Fröderyd felsic volcanic rock Fröderyd Group Vetlanda-Oskarshamn belt Svecokarelian Orogen Småland lithotectonic unit Supracrustal rock 1.86-1.82 Ga Finnish Geosciences Research Laboratory, Geological Survey of Finland, Espoo 1 U-Pb Laser ICP-MS Zircon Concordant age 1853.0 11.0 11.0 11.0 9 6 0.44 0.94 5 Magmatic age Not classified Subhedral to anhedral zircon. Some zircon grains show a weak growth zoning seen in BSE-images. Six zircon grains form a tight cluster with a concordia age of 1853 ± 11 Ma (2s, MSWD for combined concordance and equivalence = 0.44). The weighted average 207Pb/206Pb age is 1855 ± 11 Ma (2s, MSWD = 0.48). Salin et al 2021 Salin, E., Sundblad, K. & Lahaye, Y., 2021: A 1.85 Ga volcanic arc offshore the proto-continent Fennoscandia in southern Sweden. Precambrian Research 356, 106134. https://www.sciencedirect.com/science/article/pii/S0301926821000449 2021 xxx Dec 5, 2021, 3:48:26 PM fhm 1 6350648 492260 6352937 1443716 6E0i
alder.2820 2820 LT13001 n4910 Smörkullåsen Eclogite Eclogite, garnet-rich, Fe-Ti rich Lilla Ammås eclogite Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1683.0 17.0 17.0 17.0 12 7 0.94 5 Magmatic age Not classified Zircon grains are typically subhedral, subrounded to rounded. Most grains show a weak oscillatory or sector zoning in backscattered electron images (BSE). A Tera-Wasserburg regression of these analyses, anchored to 972 ± 14 Ma yields an upper intercept of 1683 ± 17 Ma (MSWD = 0.94; n = 7), interpreted to best represent the age of igneous crystallisation. Petersson & Tual 2020 Petersson, A. & Tual, L., 2020: Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source. GFF, 1-14. https://doi.org/10.1080/11035897.2020.1822438 2020 xxx Dec 6, 2021, 7:54:54 AM fhm 1 6337061 361710 5C8c
alder.2821 2821 LT13001 n4910 Smörkullåsen Eclogite Eclogite, garnet-rich, Fe-Ti rich Lilla Ammås eclogite Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock GSDG c. 1.71-1.66 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1459.0 44.0 44.0 44.0 12 5 12.0 1 Metamorphic age Not classified Most grains show a weak oscillatory or sector zoning in backscattered electron images (BSE). Zircon analyses from a 1509-1424 Ma age cluster (Th/U < 0.45), yields a 207Pb/206Pb weighted average of 1459 ± 44 Ma (MSWD = 12). Petersson & Tual 2020 Petersson, A. & Tual, L., 2020: Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source. GFF, 1-14. https://doi.org/10.1080/11035897.2020.1822438 2020 xxx Dec 6, 2021, 8:05:24 AM fhm 1 6337061 361710 5C8c
alder.2822 2822 LT11074 n4911 Bosveken Gabbro metagabbro, coronitic Sveconorwegian Orogen Eastern Segment, lower unit Intrusive rock c. 1.46-1.29 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1431.0 26.0 26.0 26.0 10 9 1.5 5 Magmatic age Not classified Zircon grains and fragments are subhedral to euhedral. In BSE images they are commonly weakly to unzoned with some grains having thin rims of secondary zircon, discordantly cutting the main zonation.U-Pb analyses of zircon core domains yielded five concordant and four slightly discordant (0.3-1.3% 2s level discordance) data points defining a discordia regression on a Tera-Wasserburg plot with an upper intercept at 1426 ± 30 Ma and a lower intercept at 952 ± 86 Ma (2s, MSWD = 1.6). Th/U range between 0.36 and 0.51. Anchoring the lower intercept at 972 ± 14 Ma, (age of eclogitisation), the linear regression yields an upper intercept of 1431 ± 26 Ma, (2s, MSWD = 1.5), interpreted as the crystallisation age of the gabbro. Petersson & Tual 2020 Petersson, A. & Tual, L., 2020: Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source. GFF, 1-14. https://doi.org/10.1080/11035897.2020.1822438 2020 xxx Dec 6, 2021, 8:05:31 AM fhm 1 6330569 364281 5C6d
alder.2823 2823 Häckelberget Doleritic rock Dolerite dyke, ca. 20 m-thick, relatively well-preserved, plagioclase-porphyritic Ottfjället dolerite Ottfjället dyke swarm Caledonian Orogen Jämtlandian, Offerdal and Särv Nappes Ediacaran c. 0.630-0.542 Ga Jack Satterly Geochronology Laboratory (JSGL) at the University of Toronto & Swedish Museum of Natural History (NRM), Stockholm 1 U-Pb ID-TIMS Baddeleyite 206Pb/238U age 596.0 2.0 2.0 2.0 8 1 5 Magmatic age Not classified Regression of the error-weighted 207Pb/206Pb ratios for all eight analyses yields an upper intercept age of 596 ± 12 Ma, and a lower intercept of 103 ± 220 Ma (MSWD = 0.79, probability of fit = 58%). The oldest, least discordant analysis, having a 206Pb/238U age of 596.3 ± 1.5 Ma (2s error) is suggested to date igneous crystallisation of the dolerite. Kumpulainen et al 2021 Kumpulainen, R.A., Hamilton, M.A., Söderlund, U. & Nystuen, J.P., 2021: U-Pb baddeleyite age for the Ottfjället Dyke Swarm, central Scandinavian Caledonides: new constraints on Ediacaran opening of the Iapetus Ocean and glaciations on Baltica. GFF 143, 40-54. https://doi.org/10.1080/11035897.2021.1888314 2021 xxx Dec 6, 2021, 9:45:57 AM fhm 1 6939811 376586 17C8h
alder.2824 2824 Å16-03 Storlien Mica schist Mylonitic Hbl mica schist, WM+Qtz+Bt+Amp+Ep+Ab+Cc + Ttn + Chl Middle Köli Nappe Caledonian Orogen Köli Nappe Complex Stratigraphic position unknown GFZ Potsdam 2 Rb-Sr ID-TIMS Multi mineral Isochron age 413.0 5.0 5.0 5.0 7 7 5.0999999 1 Metamorphic age Not classified Date of top-ESE out-of-sequence thrusting.The isochron is codefined by Rb-Sr data of whitemica and amphibole,which compose the top-to-the-ESE fabric. An age of 413.0 ± 4.8 Ma was calculated including all mineral data. Decay constants from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 3:37:01 PM fhm 1 7023115 357010 19C5d
alder.2825 2825 Å16-03 Storlien Mica schist Mylonitic Hbl mica schist, WM+Qtz+Bt+Amp+Ep+Ab+Cc + Ttn + Chl Middle Köli Nappe Caledonian Orogen Köli Nappe Complex Stratigraphic position unknown GFZ Potsdam 2 Rb-Sr ID-TIMS Multi mineral Isochron age 416.0 3.0 3.0 3.0 7 6 2.0999999 1 Metamorphic age Not classified Date of top-ESE out-of-sequence thrusting.The isochron is codefined by Rb-Sr data of whitemica and amphibole,which compose the top-to-the-ESE fabric. Excluding apatite, an isochron age of 415.5 ± 3.2 Ma (MSWD = 2.1) is obtained.. Decay constants from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 4:28:17 PM fhm 1 7023115 357010 19C5d
alder.2826 2826 GÄD-11a Högsätern Mica schist Mylonitic mica schist, WM + Qtz + Bt + Tur + Ab + Cc Middle Köli Nappe Caledonian Orogen Köli Nappe Complex Stratigraphic position unknown GFZ Potsdam 2 Rb-Sr ID-TIMS Multi mineral Isochron age 428.0 4.0 4.0 4.0 5 1.60000002 1 Metamorphic age Not classified Isochron age based on data for white mica, carbonate and albite, and dates the formation of top-to-the-ESE fabrics at 428.3 ± 3.7 Ma (MSWD = 1.6, 2s). Decay constants from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 4:28:39 PM fhm 1 7165705 444715 22E3b
alder.2827 2827 GÄD-11a Högsätern Mica schist Mylonitic mica schist, WM + Qtz + Bt + Tur + Ab + Cc Middle Köli Nappe Caledonian Orogen Köli Nappe Complex Stratigraphic position unknown GFZ Potsdam 2 Rb-Sr ID-TIMS Multi mineral Isochron age 416.0 6.0 6.0 6.0 0 not known Not classified Biotite and carbonate (Fe) data regress to yield an age of 416.2±6.1 Ma. It remains unclear whether this date reflects a partial or complete reset of the Rb-Sr system in biotite during later overprint(s). In any case, biotite was an open system at or after 416.2 ± 6.1 Ma, most probably during an episode of fluid-mediated overprinting. Decay constants from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 4:28:43 PM fhm 1 7165705 444715 22E3b
alder.2828 2828 GÄD-01b Kvarnbergsåsen Mica schist Mylonitic calcareous mica schist, WM + Qtz + Cc + Fsp Lower Köli Nappe Caledonian Orogen Köli Nappe Complex Stratigraphic position unknown GFZ Potsdam 2 Rb-Sr ID-TIMS Multi mineral Isochron age 427.0 4.0 4.0 4.0 5 0.37 1 Metamorphic age Not classified Calcite and white mica, which compose top-to-the-ESE shear bands, co-define the age of 427.2 ±3.7 Ma (MSWD = 0.37, 2s). Decay constants from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 4:28:47 PM fhm 1 7160584 447343 22E2b
alder.2829 2829 ÅRE15-02 Duved Mica schist Folded calcareous mica schist, WM + Qtz + Cc + Fsp + Bt Lower Köli Nappe Caledonian Orogen Köli Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 427.0 6.0 6.0 6.0 0 not known Not classified Disequilibria between the low-Rb/Sr phases, including white mica, indicate that recrystallization during the formation of these folds did not fully reset Rb-Sr systematics of the mineral assemblage. Nevertheless, independent of which phase combined with the biotite data to calculate a biotite age, result in an age of c. 426-427 ± 6 Ma (e.g., 426.5 ± 6.3 for Bt + Cc, 425.5 ± 6.3 Ma for Ap + Bt). Decay constants from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 4:28:53 PM fhm 1 7030788 393622 19D6a
alder.2830 2830 ÅRE15-02 Duved Mica schist Folded calcareous mica schist, WM + Qtz + Cc + Fsp + Bt Lower Köli Nappe Caledonian Orogen Köli Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 426.0 6.0 6.0 6.0 0 not known Not classified Disequilibria between the low-Rb/Sr phases, including white mica, indicate that recrystallization during the formation of these folds did not fully reset Rb-Sr systematics of the mineral assemblage. Nevertheless, independent of which phase combined with the biotite data to calculate a biotite age, result in an age of c. 426-427 ± 6 Ma (e.g., 426.5 ± 6.3 for Bt + Cc, 425.5 ± 6.3 Ma for Ap + Bt). Decay constants from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 4:28:57 PM fhm 1 7030788 393622 19D6a
alder.2831 2831 GÄD-09 Ankarede Mica schist Mylonitic metabasic mica schist, WM + Qtz + Fsp + Bt + Rut + Tur + Ttn Seve–Köli shear zone Caledonian Orogen unknown Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 431.0 4.0 4.0 4.0 5 0.25 1 Metamorphic age Not classified A well-defined isochron (MSWD = 0.25) defined by white mica, epidote and apatite gives an age of 430.6 ± 3.7 Ma (2s), dating WM-defined deformation. Decay constants from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:13:52 PM fhm 1 7186979 463734 22E7f
alder.2832 2832 GÄD-10 Ankarede Marble Mylonitic marble, Cc + Qtz +WM Seve–Köli shear zone Caledonian Orogen unknown Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 431.0 4.0 4.0 4.0 5 0.047 1 Metamorphic age Not classified Interpretation is that the age of 430.9± 4.1 Ma (2s) within limits of uncertainty, dates both the relict higher-grade fabric for which kinematic indicators have been obliterated, and the lowtemperature top-to-the-WNW fabric. Decay constants used is from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:13:57 PM fhm 1 7187623 465503 22E8f
alder.2833 2833 ÅRE15-11 Storlien (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, WM + Qtz + Ab + Bt + Ep + Ilm + Py + Grt Seve–Köli shear zone Caledonian Orogen unknown Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 431.0 6.0 6.0 6.0 5 8.19999981 1 Metamorphic age Not classified The Rb-Sr system of feldspar may have been disturbed (see post 2834), incorporation of the feldspar data in the regression results in an indistinguishable age value (431.4 ± 6.1 Ma, 2s) with elevated MSWD (8.2), reflecting Sr-isotopic disequilibrium between feldspar and apatite. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:14:01 PM fhm 1 7021594 352710 19C5c
alder.2834 2834 ÅRE15-11 Storlien (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, WM + Qtz + Ab + Bt + Ep + Ilm + Py + Grt Seve–Köli shear zone Caledonian Orogen unknown Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 432.0 4.0 4.0 4.0 4 0.01 1 Metamorphic age Not classified Calculating an apatite-white mica age excluding feldspar (disturbed, see post 2833) yields an age of 431.5 ± 3.7 Ma (MSWD = 0.01), interpreted to date top-ESE shearing. Decay constants from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:14:07 PM fhm 1 7021594 352710 19C5c
alder.2835 2835 ÅRE15-10 Handöl (approximate coordinates, taken from map figure) Unknown At the Seve–Köli nappe contact, a reaction zone between a Lower Köli Nappe serpentinized ultramafic lens and Upper Seve Nappe amphibolite is marked by weakly sheared biotitite blackwall assemblage, Bt + Ap. Seve–Köli shear zone Caledonian Orogen unknown Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 423.0 4.0 4.0 4.0 3 2.5999999 0 not known Not classified Biotite and apatite Rb-Sr data yield an isochron age of 422.7 ± 3.7Ma (MSWD=2.6, 2s), Interpreted to date formation of blackwall assemblage. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:14:12 PM fhm 1 7015906 372786 19C3g
alder.2836 2836 ÅRE15-09 Handöl (approximate coordinates, taken from map figure) Gneiss Mylonitic biotite gneiss, WM + Qtz + Bt + Kfs + Pl + Sil +Gr Upper Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 434.0 6.0 6.0 6.0 1 Metamorphic age Not classified For the coarse-grained fabric, an age of 434.1 ± 6.4 Ma is calculated using the >500 µm grain-size fraction of white mica, regressed with the feldspar datae, age of coarse-grained top-ESE fabric (mica fish). Taken together, all Rb-Sr isotopic data define an age of 423 ± 12 Ma. Decay constants used is from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:03 PM fhm 1 7014417 375233 19C3g
alder.2837 2837 ÅRE15-09 Handöl (approximate coordinates, taken from map figure) Gneiss Mylonitic biotite gneiss, WM + Qtz + Bt + Kfs + Pl + Sil +Gr Upper Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 416.0 4.0 4.0 4.0 1 Metamorphic age Not classified For the shear bands, an age of 416.0 ± 3.6 Ma is obtained using the smaller grain-size fractions of white mica (<355 µm) and apatit, age of fine-grained top-ESE fabric (shear bands). Taken together, all Rb-Sr isotopic data define an age of 423 ± 12 Ma. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:11 PM fhm 1 7014417 375233 19C3g
alder.2838 2838 ÅRE15-03 Snasahögarna (approximate coordinates, taken from map figure) Gneiss Mylonitic garnet–biotite gneiss, Bt + Qtz + Kfs + Pl + Sil + Gr Middle Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 429.0 5.0 5.0 5.0 6 24.0 1 Metamorphic age Not classified 428.8 ± 5.3 Ma was obtained (2s). The biotite-based, six-point internal mineral isochron age is, within uncertainties, identical to white-mica-defined ages of c. 430 Ma from ther samples. Elevated MSWD of 24, which is due to minor Sr-isotopic disequilibria between the low-Rb/Sr phases apatite, titanite, and feldspar,the calculated age is auggested to be geologically meaningful, interpreted to date the waning stages of ductile deformation in this sample. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:15 PM fhm 1 7011970 363856 19C3e
alder.2839 2839 ÅRE15-04 Snasahögarna (approximate coordinates, taken from map figure) Gneiss High-grade mobilisate, WM + Qtz + Fsp + Cc Middle Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 430.0 12.0 12.0 12.0 6 149.0 0 not known Not classified Sr-isotopic disequilibria exist between apatite and feldspar, and regression of all Rb-Sr data shows that apatite plots above the regression line. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:26 PM fhm 1 7013094 365576 19C3f
alder.2840 2840 ÅRE15-04 Snasahögarna (approximate coordinates, taken from map figure) Gneiss High-grade mobilisate, WM + Qtz + Fsp + Cc Middle Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 438.0 4.0 4.0 4.0 5 0.43000001 1 Metamorphic age Not classified Excluding apatite from regression and obtained a well-defined age of 437.8 ± 3.9 Ma (MSWD = 0.43) for the feldspar-white mica sub-assemblage. Given the undeformed nature of the metamorphic leucosome, this age is interpreted as dating leucosome crystallization. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:36 PM fhm 1 7013094 365576 19C3f
alder.2841 2841 GÄD-08 Rödfjället (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, WM + Qtz + Pl + Bt + Ep + Grt Middle Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 432.0 3.0 3.0 3.0 6 1.39999998 1 Metamorphic age Not classified Four white mica grain size fractions combined with two feldspar grain size fractions provide a well-defined isochron age of 431.7 ± 3.1 Ma (MSWD = 1.4, 2s). Apatite falls slightly off the regression line, potentially because of alteration effects and is excluded, aswell as biotit (chloritised). The above age interpreted as dating the end of amphibolite facies ductile deformation. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:44 PM fhm 1 7184697 465735 22E7f
alder.2842 2842 GÄD-08 Rödfjället (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, , WM + Qtz + Pl + Bt + Ep + Grt Middle Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 422.0 6.0 6.0 6.0 0 not known Not classified Apatite and biotite yield an apparent age of 421.7±6.2 Ma (2s), which interpreted to point to a post-421 Ma episode of fluid alteration and chloritization of biotite. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:54 PM fhm 1 7184697 465735 22E7f
alder.2843 2843 ÅRE15-08 Ånnsjön (approximate coordinates, taken from map figure) Gneiss Mylonitic garnet–biotite gneiss, WM + Qtz + Kfs + Pl + Sil/Ky + Grt Lower–Middle Seve Nappe shear zone Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 429.0 5.0 5.0 5.0 7 3.20000005 1 Metamorphic age Not classified Seven-point mineral isochron age of 428.6 ± 5.1 (MSWD = 3.2, 2s) for four white mica grain-size fractions, titanite + rutile, apatite and feldspar (see post 2844). Decay constants used is from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:32:59 PM fhm 1 7012598 375895 19C3g
alder.2844 2844 ÅRE15-08 Ånnsjön (approximate coordinates, taken from map figure) Gneiss Mylonitic garnet–biotite gneiss, WM + Qtz + Kfs + Pl + Sil/Ky + Grt Lower–Middle Seve Nappe shear zone Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 428.0 3.0 3.0 3.0 6 1.29999995 1 Metamorphic age Not classified Six-point mineral isochron age of 428.0 ± 3.1 (MSWD = 1.3) for four white mica grain-size fractions, titanite + rutile, and apatite. Feldspar falls slightly off the regression line, related to a late episode of fluid rock interaction with incipient chloritization of biotite and partial alteration of feldspar (excluded, see post 2843). The mylonitic texture of the rock combined with absence of a grain size versus age correlation for the white mica grain size fractions suggests that the end of amphibolite facies ductile deformation is dated. Decay constants used is from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:51:18 PM fhm 1 7012598 375895 19C3g
alder.2845 2845 GÄD-04 Gussvattnet (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, WM + Qtz + Bt + Grt + Fsp + Ttn Lower Seve Nappe Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 432.0 8.0 8.0 8.0 6 134.0 0 not known Not classified Sr-isotopic disequilibrium between the low-Rb/Sr phases feldspar and apatite. Potential reasons for this disequilibrium remain unclear. Taken together, four white mica grain-size fractions, apatite, and quartz + feldspar define an age of 431.8 ± 7.8 Ma (MSWD =134, 2s). Decay constants used is from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:51:22 PM fhm 1 7147088 463939 22E0f
alder.2846 2846 G16-05 Stor-Sjouten (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, WM + Qtz + Fsp + Ttn + Ilm Särv–Seve shear zone Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 434.0 4.0 4.0 4.0 1 Metamorphic age Not classified Three white mica grain size fractions, apatite and titanite yield an age of 433.8 ±9.7 Ma (2s). The elevated MSWD of 7.8 is due tominor initial Sr-isotopic disequilibrium between apatite and titanite. White mica combined with apatite defines an age of 433.7 ± 3.6 Ma. (2s), interprted to reflect the age of the waning stages of mylonitic deformation in this sample. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:51:31 PM fhm 1 7162276 505267 22F2d
alder.2847 2847 G16-05 Stor-Sjouten (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, WM + Qtz + Fsp + Ttn + Ilm Särv–Seve shear zone Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 434.0 4.0 4.0 4.0 1 Metamorphic age Not classified Three white mica grain size fractions, apatite and titanite yield an age of 433.8 ±9.7 Ma (2s). The elevated MSWD of 7.8 is due tominor initial Sr-isotopic disequilibrium between apatite and titanite.Combining white mica and titanite Rb-Sr isotopic data leads to an isochron age of 434.1 ± 3.7 (2s), interprted to reflect the age of the waning stages of mylonitic deformation in this sample. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:51:35 PM fhm 1 7162276 505267 22F2d
alder.2848 2848 ÅRE15-05 Snasahögarna (approximate coordinates, taken from map figure) Mica schist Mylonitic mica schist, WM + Qtz + Bt + Grt + Fsp + Cc + Ilm Särv–Seve shear zone Caledonian Orogen unknown Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 426.0 3.0 3.0 3.0 5 0.62 1 Metamorphic age Not classified Excluding the Rb-Sr data of the obviously altered feldspar from regression calculation, a mineral isochron age of 426.3 ± 3.2 Ma is obtained, based on four white mica grain size fractions and apatite data (MSWD=0.62, 2s). The age value is best interpreted to date the end of ductile deformation. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:51:43 PM fhm 1 7014417 361739 19C3e
alder.2849 2849 Å15-17 Enkroken (approximate coordinates, taken from map figure) Mica schist Sheared quartzitic mica schist, Ph + Qtz + Ab + Kfs (clasts) Lower Allochton Caledonian Orogen Jämtlandian, Offerdal and Särv Nappes Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 410.0 3.0 3.0 3.0 5 1.89999998 1 Metamorphic age Not classified Excluding the >160 µm grain-size fraction of white mica, the sample yields a five-point mineral isochron age of 410.1 ± 3.0 Ma (MSWD = 1.9, 2s), best interpreted as a deformation age. Decay constants used is from Villa et al (2015). Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:51:53 PM fhm 1 7015740 360780 19C3e
alder.2850 2850 Å15-17 Enkroken (approximate coordinates, taken from map figure) Mica schist Sheared quartzitic mica schist, Ph + Qtz + Ab + Kfs (clasts) Lower Allochton Caledonian Orogen Jämtlandian, Offerdal and Särv Nappes Stratigraphic position unknown 2 Rb-Sr ID-TIMS Multi mineral Isochron age 435.0 7.0 7.0 7.0 0 not known Not classified Combining the isotopic data for white mica >160 µm and feldspar, an apparent age of 434.6 ± 6.9 Ma is calculated. However, the Rb-Sr isotopic data show that the largest white mica grain size fraction (>160 µm) is not in equilibrium with three smaller grain-size mica fractions. Decay constants from used is from Villa et al (2015) Bender et al 2019 Bender, H., Glodny, J. & Ring, U., 2019: Absolute timing of Caledonian orogenic wedge assembly, Central Sweden, constrained by Rb–Sr multi-mineral isochron data. Lithos 344-345, 339-359. https://doi.org/10.1016/j.lithos.2019.06.033 2019 xxx Dec 6, 2021, 5:59:47 PM fhm 1 7015740 360780 19C3e
alder.2851 2851 KBK170016A Nylandet västra, Naggen area Arkosic arenite Arkosic arenite Naggen group Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1841.0 2895.0 49 0 not known Not classified The U/Th ratios vary between 1.6 and 37.0, and 49% of the analysed zircons have U/Th ratios below 5.0. More than 20% of the zircons show dates that fall in the age interval 1,850-1,899 Ma with a maximum probability peak at 1,871 Ma and about 30% in the interval 1,950-1,999 Ma with a maximum at 1,980 Ma. About 8% of the analysed zircons have dates in the intervals 1,900-1,949, 2,000-2,049 and 2,650-2,699 Ma each. The youngest zircon was dated to 1,841 Ma and the oldest to 2,895 Ma. About 16.3% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,678 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 6, 2021, 5:59:59 PM fhm 1 6907292 538845 6909204 1497087 17F1j
alder.2852 2852 KBK170017A Nylandet östra, Naggen area Arkosic arenite Arkosic arenite Naggen group Svecokarelian Orogen Bothnia-Skellefteå lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1808.0 3233.0 124 0 not known Not classified The U/Th ratios vary between 1.2 and 34.0 with a single outlier at 434.0, and 60% of the analysed zircons have U/Th ratios below 5.0. More than 20% of the zircons have dates that fall in the age intervals 1,850-1,899 Ma with a maximum probability peak at 1,880 Ma, and 1,950-1,999 Ma with a maximum peak at 1,980 Ma, respectively. Almost 14% of the zircons have dates in the interval 1,900-1,949 Ma. The youngest zircon was dated to 1,808 Ma and the oldest to 3,233 Ma. About 19.4% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,700 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 6, 2021, 6:00:03 PM fhm 1 6906821 539532 6908724 1497768 17F1j
alder.2853 2853 KBK170011A Värmlandsströmmen, Los–Hamra area Quartzarenite Quartz arenite Los formation, lower to middle part Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1831.0 2963.0 116 0 not known Not classified The U/Th ratios vary between 1.5 and 42.8, and 55% of the analysed zircons have U/Th ratios below 5.0. About 43% of the zircons show dates that fall in the age interval 1,850-1,899 Ma with a maximum probability peak at 1,879 Ma. About 11 and 16% of the analysed zircons show dates in the intervals 1,900-1,949 and 1,950-1,999 Ma, with peaks at 1,931 and 1,981 Ma, respectively. The youngest zircon was dated to 1,831 Ma and the oldest to 2,963 Ma. About 11.2% of the zircons are of Archaean age, and the Archaean zircons show a maximum at around 2,688 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 6, 2021, 6:00:09 PM fhm 1 6843218 497781 6845619 1455213 15F9b
alder.2854 2854 KBK170012A Karlsberg, Los–Hamra area Quartzarenite Quartz arenite Los formation, uppermost part Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1793.0 3099.0 116 0 not known Not classified The U/Th ratios vary between 1.0 and 45.5, and 55% of the analysed zircons have U/Th ratios below 5.0. About 34% of the analysed zircons have dates in the age interval 1,850-1,899 Ma and about 21% in the interval 1,900-1,949 Ma with maximum probability peaks at 1,870 and 1,940 Ma, respectively. Almost 13% of the zircons show dates in the interval 1,950-1,999 Ma. The youngest zircon was dated to 1,793 Ma and the oldest to 3,099 Ma. About 19.0% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,721 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 6, 2021, 6:00:17 PM fhm 1 6838321 512142 6840542 1469518 15F8d
alder.2855 2855 KBK170013A Vässmasmägg, Los–Hamra area Quartzite Quartzite Los formation, uppermost part Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1820.0 2854.0 115 0 not known Not classified The U/Th ratios vary between 1.2 and 34.1, and 58% of the analysed zircons have U/Th ratios below 5.0. Almost 30% of the analysed zircons show dates that fall in the age interval 1,850-1,899 Ma with a maximum probability peak at 1,882 Ma. About 11, 17 and 15%, respectively of the zircons have dates in the intervals 1,900-1,949, 1,950-1,999 and 2,000-2,049 Ma, with peaks at 1,943, 1,993 and 2,026 Ma. The youngest zircon was dated to 1,820 Ma and the oldest to 2,854 Ma. About 13.9% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,686 Ma Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:21:19 PM fhm 1 6824853 491770 6827322 1448972 15E5j
alder.2856 2856 KBK170015A Skallskog, Leksand–Falun area Arenite Arenite Leksand formation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1735.0 3277.0 108 0 not known Not classified The U/Th ratios vary between 0.8 and 83.0, and 55% of the analysed zircons have U/Th ratios below 5.0 About 31% of the analysed zircons have dates that fall in the age interval 1,850-1,899 Ma with a maximum probability peak at 1,879 Ma. About 18, 12 and 11% of the analysed zircons have dates in the intervals 1,800-1,849, 1,900-1,949 and 1,950-1,999 Ma, with peaks at 1,837 Ma in the first and 1,983 Ma in the last interval. The youngest zircon was dated to 1,735 Ma and the oldest to 3,277 Ma. About 13.0% of the zircons are of Archaean age, and the Archaean zircons show maxima at 2,636 and 2,740 Ma, respectively Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:21:23 PM fhm 1 6727565 489181 6730030 1445183 13E6j
alder.2857 2857 KBK170014A Balkbodarna, Leksand–Falun area Arenite Arenite Leksand formation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1764.0 2771.0 81 0 not known Not classified The U/Th ratios vary between 1.5 and 52.0 with a single outlier at 196.9, and 41% of the analysed zircons have U/Th ratios below 5.0. About 47% of the analysed zircons show dates in the age interval 1,850-1,899 Ma with a maximum probability peak at 1,882 Ma. About 17 and 12% of the analysed zircons have dates in the intervals 1,800-1,849 and 1,900-1,949 Ma, with a peak at 1,943 Ma in the latter interval. The youngest zircon was dated to 1,764 Ma and the oldest to 2,771 Ma. There are only three zircons are of Archaean age (2.5%), and the they show a maximum at 2,729 Ma Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:21:27 PM fhm 1 6724615 491642 6727049 1447609 13E5j
alder.2858 2858 KBK170010A Fänrikbo, Leksand–Falun area Quartzite Dense quartzite Ärtknubben formation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1698.0 3217.0 114 0 not known Not classified The U/Th ratios vary between 1.1 and 58.1, and 47% of the analysed zircons have U/Th ratios below 5.0. About 19% of the analysed zircons show dates that fall in the age interval 1,800-1,849 Ma and about 35% in the interval 1,850-1,899 Ma with maximum probability peaks at 1,805 and 1,865 Ma, respectively. About 11% of the analysed zircons have dates in the interval 1,900-1,949 Ma. The youngest zircon was dated to 1,678 Ma and the oldest to 3,217 Ma. About 14.0% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,624 Ma Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:22:53 PM fhm 1 6744231 524435 6746269 1480654 13F9g
alder.2859 2859 KBK170009A Fjällgrycksbo, Leksand–Falun area Quartzite Dense quartzite Ärtknubben formation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1722.0 2967.0 108 0 not known Not classified The U/Th ratios vary between 1.2 and 74.0, and 26% of the analysed zircons have U/Th ratios below 5.0. About 35% of the analysed zircons show dates in the age interval 1,800-1,849 Ma and about 21% in the interval 1,850-1,899 Ma with maximum probability peaks at 1,842 and 1,867 Ma, respectively. About 17% of the zircons have dates in the interval 1,900-1,949 Ma. The youngest zircon was dated to 1,772 Ma and the oldest to 2,967 Ma. About 8.7% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,696 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:22:56 PM fhm 1 6740962 529193 6742940 1485373 13F8h
alder.2860 2860 KBK170019A Eskörönningen, Gävle area Quartzite Gneissose quartzite–quartz arenite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1679.0 1895.0 94 0 not known Not classified Only 10% of the analysed zircons have U/Th ratios below 5.0. About 30% of the analysed zircons have dates that fall in the age interval 1,750-1,799 Ma, about 29% in the interval 1,800-1,849 Ma and 23% in the 1,850-1,899 Ma interval. Maximum probability peaks lie at 1,756, 1,819 and 1,895 Ma. About 17% of the zircons have dates in the interval 1,700-1,749 Ma, with a peak at 1,733 Ma. The youngest ‘concordant’ zircon, also youngest in this this study, is dated to 1,679 Ma and the oldest to 1,895 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:22:59 PM fhm 1 6741910 624490 6742718 1580708 13H8g
alder.2861 2861 KBK170018A Persbacka, Gävle area Quartzite Gneissose quartzite–quartz arenite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1769.0 2810.0 115 0 not known Not classified The U/Th ratios vary between 1.7 and 310.0 with a well-balanced distribution even of the values above 100, and 17% of the analysed zircons have U/Th ratios below 5.0. About 18% of the analysed zircons have dates that fall in the age interval 1,750-1,799 Ma, about 34% in the interval 1,800-1,849 Ma and 23% in the 1,850-1,899 Ma interval. Maximum probability peaks occur at 1,783, 1,822 and 1,887 Ma. Age intervals with 8.00 to 17.99% of the analysed zircons have not been determined. The youngest ‘concordant’ zircon is dated to 1,769 Ma and the oldest to 2,810 Ma. Only five Archaean zircons have been observed which is 4.3% of the total amount of zircons and the analysed dates occur quite equally distributed in the 50 m.y. intervals between 2,500 and 2,849 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:23:06 PM fhm 1 6733040 618922 6733914 1575029 13H6f
alder.2862 2862 KBK170021A Udden, Nykvarn–Mörkö area Paragneiss Paragneiss Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1832.0 2458.0 19 0 not known Not classified The U/Th ratios vary between 1.8 and 31.1, and 42% of the analysed zircons have U/Th ratios below 5.0. About 21% of the zircons have dates that fall in the age intervals 1,850-1,899 and 1,950-1,999 Ma each. Associated maximum probability peaks lie at 1,896 and 1,972 Ma respectively. Almost 16% of the zircons have dates in the interval 2,000-2,049, c. 11% each fall in the intervals 1,800-1,849, 1,900-1,049 and 2,150-2,199 Ma. The youngest zircon was dated to 1,832 Ma and the oldest to 2,458 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:23:14 PM fhm 1 6559820 640941 6560389 1594942 10H2i
alder.2863 2863 KBK170008A Lindbastmora, Grangärde–Ludvika area Quartzarenite Quartz arenite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1695.0 3037.0 117 0 not known Not classified The U/Th ratios vary between 1.4 and 21.6, and 68% of the analysed zircons have U/Th ratios below 5.0. About 59% of the analysed zircons show dates that fall in the age interval 1,850-1,899 Ma with a dominating maximum probability peak at 1,873 Ma. About 10 and 8.5% of the zircons have dates in the intervals 1,800-1,849 and 1,900-1,949 Ma, respectively, with a peak at 1,945 Ma in the latter interval. The youngest zircon was dated to 1,695 Ma and the oldest to 3,037 Ma. Only four zircons (3.4%) are of Archaean age Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:23:23 PM fhm 1 6689220 502933 6691503 1458470 12F8b
alder.2864 2864 KBK170001A Nötbo-Broddbo, Sala–Tillberga area Quartzarenite Quartz arenite Larsbo formation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1859.0 2823.0 122 0 not known Not classified The U/Th ratios vary between 1.5 and 17.9, and 34% of the analysed zircons have U/Th ratios below 5.0. About 34% of the analysed zircons show dates that fall in the age interval 1,850-1,899 Ma and about 42% in the interval 1,900-1,949 Ma. A significant maximum probability peak occurs at 1,907 Ma. Age intervals with 8 to 17.99% of the analysed zircons have not been determined in this sample. The youngest zircon was dated to 1,859 Ma and the oldest to 2,823 Ma. Only three zircons (2.9%) are of Archaean age. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:23:43 PM fhm 1 6652242 587058 6653486 1542169 12G0i
alder.2865 2865 KBK170003A Lill-Sången, Grythyttan area Arenite Arenite Torrvarpen formation, Hälgsnäs member Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1832.0 3022.0 106 0 not known Not classified The U/Th ratios vary between 1.8 and 17.2, and 51% of the analysed zircons have U/Th ratios below 5.0. Almost 22% of the analysed zircons show dates that fall in the age interval 1,850-1,899 Ma with a maximum probability peak at 1,896 Ma. About 18, 14 and 13% of the zircons have dates in the intervals 1,900-1,949, 1,950-1,999 and 2,000-2,049 Ma, respectively, with peaks at 1,906, 1,995 and 2,035 Ma, respectively. The youngest zircon was dated to 1,832 Ma and the oldest to 3,022 Ma. About 17.0% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,744 Ma Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:23:48 PM fhm 1 6630602 470258 6633262 1425068 11E6f
alder.2866 2866 KBK170004A Torrvarpsund, Grythyttan area Slate Slate Torrvarpen formation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1752.0 3459.0 116 0 not known Not classified The U/Th ratios vary between 1.0 and 14.8 with two outliers at 104.1 and 115.0, and 72% of the analysed zircons have U/Th ratios below 5.0. About 31% of the analysed zircons show dates that fall in the age interval 1,850-1,899 Ma with a maximum probability peak at 1,888 Ma. About 13 and 12%, respectively of the zircons have dates in the intervals 1,900-1,949 and 1,950-1,999 Ma with a peak at 1,971 Ma. The youngest zircon was dated to 1,752 Ma and the oldest to 3,459 Ma, which is the second oldest zircon grain observed in this project. About 17.2% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,693 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:23:55 PM fhm 1 6616730 473282 6619348 1427924 11E3f
alder.2867 2867 KBK170005A Yxhammarshöjden, Grythyttan area Quartzite Quartzite Torrvarpen formation, Hälgsnäs member Sveconorwegian Orogen Eastern Segment, upper unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1801.0 2852.0 106 0 not known Not classified The U/Th ratios vary between 0.6 and 27.2 with a single outlier at 109.2, and 63% of the analysed zircons have U/Th ratios below 5.0. About 29.5% of the analysed zircons show deates that fall in the age interval 1,850-1,899 Ma with a maximum probablility peak at 1,894 Ma. About 12.4, 9.5, 13.3 and 8.6% of the zircons have ages in the intervals 1,800-1,850, 1,900-1,949, 1,950-1,999 and 2,000-2,049 Ma, respectively. The highest peaks in these intervals occur at 1,974 and 2,001 Ma. The youngest zircon was dated to 1,801 Ma and the oldest to 2,852 Ma. About 18.1% of the zircons are of Archaean age, and the Archaean zircons show a maximum at 2,708 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:03 PM fhm 1 6609763 473155 6612380 1427712 11E2f
alder.2868 2868 KBK170022A Grissjötorp, Närkesberg–Hjortkvarn area Wacke, greywacke Greywacke Vintergölen formation Emme group Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1721.0 2762.0 29 0 not known Not classified The U/Th ratios vary between 2.3 and 18.8 with two outliers at 49.0 and 73.0, and 41% of the analysed zircons have U/Th ratios below 5.0. About 21.4% of the analysed zircons show dates that fall in the age intervals 1,850-1,899 and 2,000-2,049 Ma each. Associated maximum probability peaks occur at 1,880 and 2,037 Ma, respectively. About 14.3 and 10.7% of the zircons have dates in the intervals 1,900-1,949 and 1,950-1,999 Ma each. The youngest zircon was dated to 1,721 Ma and the oldest to 2,762 Ma. Two zircons are of Archaean age (7.1%), dated to 2,611 and 2,762 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:06 PM fhm 1 6513731 507471 6515897 1460880 9F3c
alder.2869 2869 KBK170023A Siggetorp-Laggarfall, Närkesberg–Hjortkvarn area Arkosic arenite Layered arkosic arenite Närkesberg formation Emme group Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1892.0 3265.0 58 0 not known Not classified The U/Th ratios vary between 1.3 and 37.0, and 66% of the analysed zircons have U/Th ratios below 5.0. About 20.7% of the analysed zircons have dates that fall in the age interval 1,950-1,999 Ma and about 29.3% in the interval 2,000-2,049 Ma with a dominating maximum probability peak at 2,007 Ma. About 12.1% of the zircons have dates in the interval 2,050-2,099 Ma. The youngest zircon was dated to 1,892 Ma and the oldest to 3,265 Ma. About 22.4% of the zircons are of Archaean age, with a maximum at 2,701 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:10 PM fhm 1 6530485 515673 6532558 1469286 9F6d
alder.2870 2870 KBK170023B Siggetorp-Laggarfall, Närkesberg–Hjortkvarn area Arkosic arenite Massive arkosic arenite Närkesberg formation Emme group Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1867.0 4008.0 114 0 not known Not classified The U/Th ratios vary between 1.0 and 27.2, and 68% of the analysed zircons have U/Th ratios below 5.0. The U/Th ratios vary between 1.0 and 27.2, and 68% of the analysed zircons have U/Th ratios below 5.0. About 27.4% of the analysed zircons show dates that fall in the age interval 2,000-2,049 Ma with a maximum probability peak at 2,012 Ma. About 15.9 and 15.0% of the zircons have dates in the intervals 1,900-1,949 and 1,950-1,999 Ma each. Maximum peaks lie at 1,924 and 1,985 Ma. The youngest zircon was dated to 1,867 Ma and the oldest to 4,008 Ma. About 25.7% of the zircons are of Archaean age which is the highest rate of all analysed samples and the Archaean zircons show several probability maxima, equally distributed between 2,558 and 3,039 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:14 PM fhm 1 6530485 515673 6532558 1469286 9F6d
alder.2871 2871 KBK170024A Linnerud-Stensätter, Närkesberg–Hjortkvarn area Arenite Arenite Närkesberg formation Emme group Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1913.0 2850.0 60 0 not known Not classified The U/Th ratios vary between 1.7 and 25.7, and 62% of the analysed zircons have U/Th ratios below 5.0. About 22.8% of the analysed zircons show dates that fall in the age interval 1,950-1,999 Ma and about 33.3% in the interval 2,000-2,049 Ma with maximum probability peaks at 1,951 and 2,031 Ma, respectively. About 14.0% of the zircons have dates in the interval 2,050-2,099 Ma with a peak at 2,086. The youngest concordant zircon was dated to 1,913 Ma and the oldest to 2850 Ma. About 15.8% of the zircons are of Archaean age, and the Archaean zircons show several probability maxima, equally distributed between 2,616 and 2,840 Ma Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:17 PM fhm 1 6529500 516869 6531558 1470471 9F6e
alder.2872 2872 KBK170025A Ångsågen, Närkesberg–Hjortkvarn area Arenite Arenite Närkesberg formation Emme group Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1730.0 2607.0 10 0 not known Not classified Only 20 zircon grains were found in the sample and 10 zircon U-Pb dates were obtained. The youngest zircon has an age of 1,730 Ma and the oldest of 2,607 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:22 PM fhm 1 6530264 519730 6532288 1473342 9F6e
alder.2873 2873 KBK170026A Lilla Fågelhult, Närkesberg–Hjortkvarn area Arenite Arenite Närkesberg formation Emme group Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1872.0 3109.0 80 0 not known Not classified The U/Th ratios vary between 1.4 and 40.0 with a single outlier at 136.0, and 64% of the analysed zircons have U/Th ratios below 5.0. About 40.0% of the analysed zircons show dates that fall in the age interval 1,950-1,999 Ma and about 18.7% in the interval 2,000-2,049 Ma with maximum probability peaks at 1,982 and 2,031 Ma, respectively. About 10.7% of the zircons have dates in the interval 2,050-2,099 Ma with a peak at 2,064. The youngest concordant zircon was dated to 1,872 Ma and the oldest to 3,109 Ma. About 20.0% of the zircons are of Archaean age with a maximum peak at 2,710 Ma Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:26 PM fhm 1 6527322 522829 6529308 1476407 9F5f
alder.2874 2874 KBK170028A Rävstavik västra, Utö area Wacke, greywacke Greywacke Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1876.0 2075.0 35 0 not known Not classified The U/Th ratios vary between 2.7 and 10.3, and 69% of the analysed zircons have U/Th ratios below 5.0. About 22.9% of the analysed zircons show dates that fall in the age interval 1,850-1,899 Ma and about 62.9% in the interval 1,900-1,949 Ma with a dominating maximum probability peak at 1,914 Ma. About 8.6% of the zircons have dates in the 1,950-1,999 Ma interval without any distinct maximum but belonging to the dominating peak at 1,914 Ma. The youngest zircon was dated to 1,876 Ma and the oldest to 2,075 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:31 PM fhm 1 6540491 691909 6540441 1645686 9I8j
alder.2875 2875 KBK170027A Rävstavik östra, Utö area Arenite Arenite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geological Survey of Denmark and Greenland (GEUS) 1 U-Pb Laser ICP-MS Zircon 207Pb/206Pb age 1895.0 2137.0 101 0 not known Not classified The U/Th ratios vary between 1.3 and 11.0, and 31% of the analysed zircons have U/Th ratios below 5.0. About 68.3% of the analysed zircons show dates that fall in the age interval 1,900-1,949 Ma with a dominating maximum probability peak at 1,915 Ma. About 13.9% have dates in the interval 1,950-1,999 Ma without any distinct maximum but belonging to the dominating peak at 1,915 Ma. The youngest zircon was dated to 1,865 Ma and the oldest to 2,137 Ma. Kathol et al 2020 Kathol, B., Hansen Serre, S., Thomsen, T.B,. 2020: Provenance of Svecofennian sedimentary rocks in Bergslagen and surrounding areas. Sveriges geologiska undesökning SGU-rapport 2020:22, 84 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202022rapport/s2022-rapport.pdf 2020 xxx Dec 7, 2021, 2:24:35 PM fhm 1 6540387 692066 6540335 1645841 9I8j
alder.2876 2876 YLS13-05 Så quarry, Åre area (coordinates from map figure) Granite Pegmatitic leucogranite, clear foliation defined by parallel layers of both the micas and a grain shape fabric of quartz and feldspar. Lower Seve Nappes Caledonian Orogen Seve Nappe Complex Ordovician 0.495-0.440 Ga Tianjin Institute of Geology and Mineral Resources 1 U-Pb Laser ICP-MS Zircon Upper intercept age 468.0 2.0 2.0 2.0 41 41 2.5 5 Magmatic age Not classified Euhedral shaped zircon with zoned internal textures.U-Pb concordant age of 468 ± 1.9 Ma (MSWD = 2.5) Li et al 2021 Li, Y., Gee, D.G., Ladenberger, A. & Sjöström, H., 2021: Timing of deformation, metamorphism and leucogranite intrusion in the lower part of the Seve Nappe Complex in central Jämtland, Swedish Caledonides. GFF 143, 55-70. https://doi.org/10.1080/11035897.2020.1858341 2021 xxx Dec 7, 2021, 3:39:25 PM fhm 1 7027316 410850 19D6e
alder.2877 2877 YLS13-05Lg Så quarry, Åre area (coordinates from map figure) Granite Pegmatitic leucogranite, clear foliation defined by parallel layers of both the micas and a grain shape fabric of quartz and feldspar. Lower Seve Nappes Caledonian Orogen Seve Nappe Complex Ordovician 0.495-0.440 Ga Tianjin Institute of Geology and Mineral Resources 1 U-Pb Laser ICP-MS Zircon Upper intercept age 470.0 2.0 2.0 2.0 49 0.88 5 Magmatic age Not classified Euhedral shaped zircon with zoned internal textures.Concordant zircon age of 470 ± 1.7 Ma (MSWD = 0.88) and a slightly older discordant cluster. Li et al 2021 Li, Y., Gee, D.G., Ladenberger, A. & Sjöström, H., 2021: Timing of deformation, metamorphism and leucogranite intrusion in the lower part of the Seve Nappe Complex in central Jämtland, Swedish Caledonides. GFF 143, 55-70. https://doi.org/10.1080/11035897.2020.1858341 2021 xxx Dec 7, 2021, 7:55:33 PM fhm 1 7027316 410850 19D6e
alder.2878 2878 YLS13-05d Så quarry, Åre area (coordinates from map figure) Amphibolite Amphibolite, fine-grained, strongly foliated is composed mainly of plagioclase and hornblende. Lower Seve Nappes Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Tianjin Institute of Geology and Mineral Resources 1 U-Pb Laser ICP-MS Zircon Lower intercept age 438.0 7.0 7.0 7.0 26 26 8.60000038 1 Metamorphic age Not classified Irregular rounded/isometric shapes and range in size from c. 40 to 60 µm. Zircons reveal general lack of distinct internal structures; however, a few grains display irregular patchy or ribbon textures. Most of the zircons have suffered severe Pb loss and the Caledonian U-Pb age for the lower intercept of the discordia was calculated at 438 ± 6.9 Ma (MSWD = 8.6). The Th/U ratios in the zircons are variable from 0.15 to 0.51. Li et al 2021 Li, Y., Gee, D.G., Ladenberger, A. & Sjöström, H., 2021: Timing of deformation, metamorphism and leucogranite intrusion in the lower part of the Seve Nappe Complex in central Jämtland, Swedish Caledonides. GFF 143, 55-70. https://doi.org/10.1080/11035897.2020.1858341 2021 xxx Dec 7, 2021, 7:55:51 PM fhm 1 7027316 410850 19D6e
alder.2879 2879 SW93-ÅRE Fröå mine, Åre area (coordinates from map figure) Granite Leucogranite, recrystallisation textures seen in quartz and the rock has also experienced some brittle deformation.This felsic intrusion cuts amphibolites, schists and calcsilicate bearing paragneisses Caledonian Orogen Seve Nappe Complex Llandovery (Early Silur) 0.440-0.428 Ga Tianjin Institute of Geology and Mineral Resources 1 U-Pb Laser ICP-MS Zircon Lower intercept age 443.0 1.0 1.0 1.0 87 53 2.29999995 5 Magmatic age Not classified Zircons are c. 200-600 µm, most of the grains are euhedral, with prismatic habit; some are broken fragments and a few have a rounded shape. most zircons have oscillatory, planar compositional zoning.Th/U ratios are variable from 0.04 to 0.32. 53 concordant ages were obtained from 38 zircons, yielding a U-Pb age of 442.9 ± 1.3 Ma (MSWD = 2.3). Age may reflect thermal event related to later fluid infiltration during Scandian emplacement onto the Baltoscandian platform, alternativelly a magmatic age related to emplacement of the leucogranite. Li et al 2021 Li, Y., Gee, D.G., Ladenberger, A. & Sjöström, H., 2021: Timing of deformation, metamorphism and leucogranite intrusion in the lower part of the Seve Nappe Complex in central Jämtland, Swedish Caledonides. GFF 143, 55-70. https://doi.org/10.1080/11035897.2020.1858341 2021 xxx Dec 7, 2021, 7:55:54 PM fhm 1 7032316 409127 19D7d
alder.2880 2880 YLS13-05s Så quarry, Åre area (coordinates from map figure) Paragneiss Psammitic paragneiss is predominantly composed of quartz, biotite, feldspar and calcite. Titanite, zoisite and garnet are common accessory minerals. Lower Seve Nappes Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Tianjin Institute of Geology and Mineral Resources 1 U-Pb Laser ICP-MS Zircon 206Pb/238U age 585.0 6.0 6.0 6.0 585.0 3600.0 84 9 Maximum depositional age Not classified The analysed zircons are mostly rounded and a few euhedral shapes and various types of inherited features.Th/U ratios are variable from 0.15 to 1.32. The detrital age distribution shows a relatively wide range of ages, with Sveconorwegian dominance at c. 1050–950 Ma and about 25% of the ages ranging from late Tonian to early Ediacaran (c. 600 Ma). The oldest 207Pb/235U ages range between c. 2.1 Ga and 3.6 Ga (with peak at c. 2.6 Ga), and Svecokarelian ages are sparse. The youngest concordant 206Pb/238U age (585 ± 6 Ma) may indicate the maximum timing of deposition Li et al 2021 Li, Y., Gee, D.G., Ladenberger, A. & Sjöström, H., 2021: Timing of deformation, metamorphism and leucogranite intrusion in the lower part of the Seve Nappe Complex in central Jämtland, Swedish Caledonides. GFF 143, 55-70. https://doi.org/10.1080/11035897.2020.1858341 2021 xxx Dec 7, 2021, 7:55:59 PM fhm 1 7027316 410850 19D6e
alder.2881 2881 Kiruna Andesite Meta-andesite, Kurravaara conglomerate volcanic intercalation Kurravaara conglomerate Svecokarelian Orogen Norrbotten lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1887.0 3.0 3.0 3.0 42 29 1.5 5 Magmatic age Not classified The concordia age is 1887 ± 3 Ma (MSWD = 1.5, 95% confidence, (n = 29), which overlaps with the weighted mean 207Pb/206Pb age of 1885 ± 3 Ma (MSWD = 1.3) of the same cluster. The remaining spots analyzed in micro-fractures (n = 11) yield an upper intercept age of 1891 ± 5 Ma (MSWD = 0.74). Andersson et al 2022 Andersson, J.B.H., Logan, L., Martinsson, O., Chew, D., Kooijman, E., Kielman-Schmitt, M., Kampmann, T.C. & Bauer, T.E., 2022: U-Pb zircon-titanite-apatite age constraints on basin development and basin inversion in the Kiruna mining district, Sweden. Precambrian Research 372, 106613. https://doi.org/10.1016/j.precamres.2022.106613 2022 xxx Oct 18, 2022, 9:09:55 AM fhm 1 7539794 718970 29J7h
alder.2882 2882 Luossavaara, Kiruna Cataclasite Cataclastic titanite on biotite-chlorite altered fracture planes from the ault core system situated in the immediate footwall of the Luossavaara IOA deposit Svecokarelian Orogen Norrbotten lithotectonic unit Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History 1 U-Pb Laser ICP-MS Titanite Weighted average 207Pb/206Pb age 1889.0 26.0 26.0 26.0 7 0.87 1 Metamorphic age Not classified Analyses with = 1.5% discordancy yield a concordia age of 1895 ± 10 Ma (MSWD = 3.8). The weighted average 207Pb/206Pb age of the subsample is 1889 ± 26 Ma. Age is interpreted as the most probable minimum age of fault initiation Andersson et al 2022 Andersson, J.B.H., Logan, L., Martinsson, O., Chew, D., Kooijman, E., Kielman-Schmitt, M., Kampmann, T.C. & Bauer, T.E., 2022: U-Pb zircon-titanite-apatite age constraints on basin development and basin inversion in the Kiruna mining district, Sweden. Precambrian Research 372, 106613. https://doi.org/10.1016/j.precamres.2022.106613 2022 xxx Oct 18, 2022, 9:15:36 AM fhm 1 7538729 719246 29J7h
alder.2883 2883 Kiruna Andesite High strain zone c.6 km east of the Kiirunavaara IOA deposit of the Kiruna-Naimakka deformation zone. Andesitic foliated rock with syn-tectonic intense and selective pervasive sodic-calcic + Fe + Cl alteration. Kiruna-Naimakka deformation zone Svecokarelian Orogen Norrbotten lithotectonic unit Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History 1 U-Pb Laser ICP-MS Titanite Concordant age 1812.0 3.0 3.0 3.0 19 1.0 1 Metamorphic age Not classified Titanite with a well-developed zonation yields a concordia age of 1812 ± 3 Ma (MSWD = 1.0. The weighted average 207Pb/206Pb age is 1820 ± 17 Ma (MSWD = 0.13). Interpreted as age of deformation in the shear zone. Andersson et al 2022 Andersson, J.B.H., Logan, L., Martinsson, O., Chew, D., Kooijman, E., Kielman-Schmitt, M., Kampmann, T.C. & Bauer, T.E., 2022: U-Pb zircon-titanite-apatite age constraints on basin development and basin inversion in the Kiruna mining district, Sweden. Precambrian Research 372, 106613. https://doi.org/10.1016/j.precamres.2022.106613 2022 xxx Oct 18, 2022, 1:53:06 PM fhm 1 7534165 726548 29J6i
alder.2884 2884 Kiruna Andesite High strain zone c.6 km east of the Kiirunavaara IOA deposit of the Kiruna-Naimakka deformation zone. Andesitic foliated rock with syn-tectonic intense and selective pervasive sodic-calcic + Fe + Cl alteration. Kiruna-Naimakka deformation zone Svecokarelian Orogen Norrbotten lithotectonic unit Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History 1 U-Pb Laser ICP-MS Titanite Concordant age 1802.0 8.0 8.0 8.0 13 1.60000002 6 Hydrothermal age Not classified Titanite that shows less pronounced zonation yields a concordia age of 1802 ± 8 Ma (MSWD = 1.6). The weighted average 207Pb/206Pb ages is 1812 ± 21 Ma (MSWD = 0.12). Dating of hydrothermal mineral alteration in shear zone. Andersson et al 2022 Andersson, J.B.H., Logan, L., Martinsson, O., Chew, D., Kooijman, E., Kielman-Schmitt, M., Kampmann, T.C. & Bauer, T.E., 2022: U-Pb zircon-titanite-apatite age constraints on basin development and basin inversion in the Kiruna mining district, Sweden. Precambrian Research 372, 106613. https://doi.org/10.1016/j.precamres.2022.106613 2022 xxx Oct 18, 2022, 3:22:31 PM fhm 1 7534165 726548 29J6i
alder.2885 2885 Nukutusvaara Apatite iron ore Apatite-magnetite rock at the hanging wall contact to the Nukutus IOA deposit Svecokarelian Orogen Norrbotten lithotectonic unit Stratigraphic position unknown Department of Geology, Trinity College Dublin 1 U-Pb Laser ICP-MS Apatite Lower intercept age 1805.0 26.0 26.0 26.0 49 1.5 4 Cooling age Not classified Discordant dataset due to initial common Pb. The total dataset (n = 49) yields an unanchored Tera-Wasserburg lower ntercept age of 1805 ± 26 Ma (MSWD = 1.5). An initial common lead value of Pb0 = 0.922 ± 0.040 is derived the from data. Andersson et al 2022 Andersson, J.B.H., Logan, L., Martinsson, O., Chew, D., Kooijman, E., Kielman-Schmitt, M., Kampmann, T.C. & Bauer, T.E., 2022: U-Pb zircon-titanite-apatite age constraints on basin development and basin inversion in the Kiruna mining district, Sweden. Precambrian Research 372, 106613. https://doi.org/10.1016/j.precamres.2022.106613 2022 xxx Oct 18, 2022, 3:33:14 PM fhm 1 7540854 720623 29J8h
alder.2886 2886 KH1811 Bingsta (appoximate location from regional map, fig 1a) Fault breccia Illite-bearing fault gouge in shallowly W-NW dipping fault, marginal to and within mafic intrusions Unknown unknown Stratigraphic position unknown 5 K-Ar Multicollector noble gas MS Illite Not known 392.0 6.0 6.0 6.0 1 Metamorphic age Not classified K-Ar age (1s) were calculated using the 40K decay constants, abundance and branching ratio of Steiger & Jäger (1977). Argon isotopes were determined on an IsotopX NGX multicollector noble gas mass spectrometer. K-conentrations were determined by ICP-OES. Age was caculated from the finest illite-fraction (<0.1 µm) interpreted to contain only authigenic illite dating brittle deformation in fault. Older ages obtained (823–477 Ma) from coarser fraction were influenced by a mixture of illite and K-feldspar, the latter interpreted to be formed during a hydrothermal event prior to faulting. Almqvist et al 2023 Almqvist, B., van der Lelij, R., Högdahl, K., Lescoutre, R., Schönenberger, J., Fossen, H., Sjöström, H., Juhlin, C., Luth, S., Grigull, S. & Viola, G. 2023, Brittle basement deformation during the Caledonian Orogeny observed by K-Ar geochronology of illite-bearing fault gouge in west-central Sweden, Terra Nova. https://doi.org/10.1111/ter.12645 2023 xxx Mar 14, 2023, 11:05:56 AM fhm 1 6958000 478250 18E2h
alder.2887 2887 KH1809C Bingsta (appoximate location from regional map, fig 1a) Fault breccia Illite-bearing fault gouge from a steeply W-dipping fault, marginal to and within mafic intrusions Unknown unknown Stratigraphic position unknown 5 K-Ar Multicollector noble gas MS Illite Not known 442.0 10.0 10.0 10.0 1 Metamorphic age Not classified K-Ar age (1s) were calculated using the 40K decay constants, abundance and branching ratio of Steiger & Jäger (1977). Argon isotopes were determined on an IsotopX NGX multicollector noble gas mass spectrometer. K-conentrations were determined by ICP-OES. Age was caculated from the finest illite-fraction (<0.1 µm) interpreted to contain only authigenic illite dating brittle deformation in fault. Older ages obtained (823–477 Ma) from coarser fraction were influenced by a mixture of illite and K-feldspar, the latter interpreted to be formed during a hydrothermal event prior to faulting. Almqvist et al 2023 Almqvist, B., van der Lelij, R., Högdahl, K., Lescoutre, R., Schönenberger, J., Fossen, H., Sjöström, H., Juhlin, C., Luth, S., Grigull, S. & Viola, G., 2023: Brittle basement deformation during the Caledonian Orogeny observed by K-Ar geochronology of illite-bearing fault gouge in west-central Sweden, Terra Nova. https://doi.org/10.1111/ter.12645 2023 xxx Mar 14, 2023, 11:06:56 AM fhm 1 6958000 478250 18E2h
alder.2888 2888 Dump D-sample Solstads koppargruva Quartzite Quartz-rich, strongly Cu-Fe-suplhide mineralized rock, in part K-feldspar bearing, granitic. Västervik quartzite Svecokarelian Orogen Småland lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon 207Pb/206Pb age 1740.0 2700.0 53 0 not known Not classified Heterogeneous zircon population in terms of color, morpholgies and sizes, locally with complex internal structures and signs of dissolution-recrystallization features. Obtained ages show a large variation. Spots with low discordance show 207Pb/206Pb age populations groups: 2.7-2.2 Ga (n=6); 2.0-1.9 Ga (main group), 1.81-1.80 (n=2) Ga and 1.76-1.74 Ga (n=2). The younger (207Pb/206Pb) population, close to 1.8 Ga, is indicated for euhedral- subhedral grains, whereas anhedral and rounded grains yielded two pre-Svecofennian age populations. It was suggested that anhedral zircons have a detrital origin and that the quartz-rich host rock is a xenolith belonging to the c. 1.88–1.86 Ga Västervik quartzite formation. The euhedral-subhedral zircons in the 1.80–1.77 Ga interval is interpreted to be newly formed in the quartzite as a result of its incorporation as a xenolith in the TIB 1a magma and associated tectonic and hydrothermal processes. Billström et al 2022 Billström, K., Söderhielm, J., Broman, C. & Sundblad, K., 2022: Solstad, a Co-Se-bearing copper ore in the Västervik quartzites, Sweden, GFF, 1–14 Billström, K., Söderhielm, J., Broman, C. & Sundblad, K. 2022, Solstad, a Co-Se-bearing copper ore in the Västervik quartzites, Sweden, GFF, 1–14 2022 xxx Mar 14, 2023, 11:54:59 AM fhm 1 6382093 592690 6G6i
alder.2889 2889 s23.98; s25.98 Stugun Doleritic rock Two samples were collected from the central part of a ~ 1.5 m thick basic dyke. Stugun dyke Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Intrusive rock c. 1.27-1.20 Ga Geochronology Laboratory of the University of Alaska, Fairbanks 6 Ar-Ar Step-wise heating Whole rock Weighted average age 1244.0 8.0 8.0 8.0 4 5 Magmatic age Not classified None of the four runs meet the criteria of a plateau, and there is significant scatter. The interpreted ages are determined as weighted averages of the highest ages in phase 1 (lower Ca/K phase) from each run. Best estimate for the age of the dyke is given by a weighted mean for the four runs at 1.244 ± 0.008 Ga. Given the argon loss the initial age may be higher. Salminen et al 2023 Salminen, J., Elming, S.-Å., Mertanen, S., Wang, C., Almqvist, B. & Moakhar, M.O., 2021: Paleomagnetic studies of rapakivi complexes in the Fennoscandian shield – Implications to the origin of Proterozoic massif-type anorthosite magmatism, Precambrian Research 365: 106406 https://doi.org/10.1016/j.precamres.2022.106923 2023 xxx Mar 14, 2023, 1:33:13 PM fhm 1 6996845 527258 18F9h
alder.2890 2890 Bk1336 Svartpålstjärnen (Ställdalen) Volcanic rock Metavolcanic sediment (oligoclase-bearing biotite quartzite), sample taken adjacent and near top of ice wedge pseusomorph structure Svecokarelian Orogen Bergslagen lithotectonic unit Paleoproterozoic c. 1.96-1.86 Ga Korean Basic Science Institute 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1895.0 5.0 5.0 5.0 8 0.23 5 Magmatic age Not classified Eight concordant spots define a weighted, 204Pb-corrected 207Pb/206Pb age of 1895 ± 5 Ma (95% confidence) with a mean squared weighted deviation (MSWD) of 0.23.There are additional, near-concordant, older, inherited grains Vandenberghe et al 2021 Vandenberghe, J., Kuipers, G., Beunk, F.F., Yi, K. & van der Wateren, F.M., 2021: Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden, Permafrost and Periglacial Processes, 32(1): 169–177 https://doi.org/10.1002/ppp.2094 2021 xxx Mar 14, 2023, 2:23:03 PM fhm 1 6640188 494815 6642553 1449751 11E8j
alder.2891 2891 Bk1337 Svartpålstjärnen (Ställdalen) Volcanic rock Metavolcanic sediment (oligoclase-bearing biotite quartzite). Sample taken 1.5 m stratigraphically above ice wedge pseusomorph structure Svecokarelian Orogen Bergslagen lithotectonic unit Paleoproterozoic c. 1.96-1.86 Ga Korean Basic Science Institute 1 U-Pb SIMS Zircon 207Pb/206Pb age 1889.0 1891.0 5 Magmatic age Not classified Results peak in the range 1.89–1.91 Ga, with some additional, near-concordant, inherited zircon grains, c. 1.92 Ga, up to 1.97 and 2.35 Ga. Vandenberghe et al 2021 Vandenberghe, J., Kuipers, G., Beunk, F.F., Yi, K. & van der Wateren, F.M., 2021: Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden, Permafrost and Periglacial Processes, 32(1): 169–177 https://doi.org/10.1002/ppp.2094 2021 xxx Mar 14, 2023, 3:38:48 PM fhm 1 6640188 494815 6642553 1449751 11e8j
alder.2892 2892 KES150001 Forshammar, roadcut south of Felsic volcanic rock Felsic metavolcanic rock (?) Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1910.0 4.0 4.0 4.0 47 35 3.20000005 0.0 5 Magmatic age Not classified Anhedral to euhedral, diverse population of zircon, both BSE-bright and BSE-dark cores exist. 47 zircons were analyzed with one spot in each, 207Pb/206Pb-dates range from 1800 ± 14 Ma to 2086 ± 22 Ma. A 207Pb/206Pb weighted average for 35 spots (< 5 % discordant) yield a 1910 ± 4 Ma (95 % conf., MSWD=3.2; n=35/37) date, with U from 180 ppm to 1423 ppm and Th/U from 0.3 to 0.7 Linders 2016 Linders W., 2016: U-Pb geochronology and geochemistry of host rocks to the Bastnäs-type REE mineralization in the Riddarhyttan area, west central Bergslagen, Sweden. Dissertations in Geology at Lund University, No. 466, 62 pp. https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=8871832&fileOId=8871834 2016 xxx Mar 14, 2023, 3:58:41 PM fhm 1 6625428 527532 11F5g
alder.2893 2893 KES150002 Riddarhyttan, outcrop north of close to Källfallet. Felsic volcanic rock Felsic metavolcanic rock, weakly quartz-porphyritic Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1899.0 4.0 4.0 4.0 43 33 2.20000005 0.0 5 Magmatic age Not classified Anhedral to euhedral, mostly homogeneous zircon, a few with oscillatory zoning.207Pb/206Pb-dates range from 1871 ± 18 Ma to 2000 ± 22 Ma. A 207Pb/206Pb weighted average of 33 spots (< 5 % discordant) yield 1899 ± 4 Ma (95 % conf., MSWD=2.2; n=33/34), with U from 274 ppm to 1223 ppm and Th/U from 0.3 to 0.7. Linders 2016 Linders W., 2016: U-Pb geochronology and geochemistry of host rocks to the Bastnäs-type REE mineralization in the Riddarhyttan area, west central Bergslagen, Sweden. Dissertations in Geology at Lund University, No. 466, 62 pp. https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=8871832&fileOId=8871834 2016 xxx Mar 15, 2023, 8:05:09 AM fhm 1 6631027 529682 11F6g
alder.2894 2894 KES150003 Bäckegruvan, west of, old Cu process plant Felsic volcanic rock Felsic metavolcanic rock, quartz-porphyritic Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1911.0 6.0 6.0 6.0 38 24 3.20000005 0.0 5 Magmatic age Not classified Diverse zircon population, both BSE-bright and BSE-dark cores occur. Some grains show have an oscillatory zoning while others show a heterogeneous patch pattern. 207Pb/206Pb-dates range from 1592 ± 19 Ma to 2032 ± 25 Ma (n= 38). A 207Pb/206Pb weighted average for spots < 5 % discordant yield 1911 ± 6 Ma (95 % conf., MSWD=3.2; n=24/25), with U from 137 ppm to 1417 ppm and Th/U from 0.3 to 0.7. Linders 2016 Linders W., 2016: U-Pb geochronology and geochemistry of host rocks to the Bastnäs-type REE mineralization in the Riddarhyttan area, west central Bergslagen, Sweden. Dissertations in Geology at Lund University, No. 466, 62 pp. https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=8871832&fileOId=8871834 2016 xxx Mar 15, 2023, 8:15:52 AM fhm 1 6632886 530785 11F6h
alder.2895 2895 KES150004 Bjursjön, roadcut west of Felsic volcanic rock Felsic metavolcanic rock, very fine-grained Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1916.0 4.0 4.0 4.0 23 12 1.39999998 0.18000001 5 Magmatic age Not classified Anhedral to euhedral zircon. Half of the crystals are homogeneous while the other half shows pronounced oscillatory zoning with both BSE-bright and BSE-dark cores. 207Pb/206Pb-dates range from 1825 ± 10 Ma to 1986 ± 12 Ma (n=23). A 207Pb/206Pb weighted average for 12 spots (< 5 % discordant) yield 1916 ± 4 Ma (95 % conf., MSWD=1.4; n=12/13), with U from 521 ppm to 1411 ppm and Th/U from 0.4 to 1.1. Linders 2016 Linders W., 2016: U-Pb geochronology and geochemistry of host rocks to the Bastnäs-type REE mineralization in the Riddarhyttan area, west central Bergslagen, Sweden. Dissertations in Geology at Lund University, No. 466, 62 pp. https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=8871832&fileOId=8871834 2016 xxx Mar 15, 2023, 8:26:51 AM fhm 1 6633250 532989 11F7h
alder.2896 2896 KES150005 Nya Bastnäs, close to the mines Felsic volcanic rock Felsic metavolcanic rock, fine-grained Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) 1 U-Pb Laser ICP-MS Monazite Weighted average 207Pb/206Pb age 1824.0 7.0 7.0 7.0 59 48 1.20000005 0.15000001 1 Metamorphic age Not classified Anhedral to subhedral monazite with slightly rounded morphology. Homogeneous with no or only a faint oscillatory growth zonation and no visible cores. 207Pb/206Pb-dates range from 1774 ± 52 Ma to 2080 ± 41 Ma (n=59). A 207Pb/206Pb weighted average 48 spots (< 5 % discordant) yield 1824 ± 7 Ma (95 % conf., MSWD=1.2; n=48/51) date. Three older spots rejected. Linders 2016 Linders W., 2016: U-Pb geochronology and geochemistry of host rocks to the Bastnäs-type REE mineralization in the Riddarhyttan area, west central Bergslagen, Sweden. Dissertations in Geology at Lund University, No. 466, 62 pp. https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=8871832&fileOId=8871834 2016 xxx Mar 15, 2023, 8:33:32 AM fhm 1 6634414 532977 11F7h
alder.2897 2897 KES150008 Högfors Storgruva Granite Granite, medium- to coarse-grained, mostly isotropic, red Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga 1 U-Pb Laser ICP-MS Zircon Upper intercept age 1822.0 10.0 10.0 10.0 115.0 170.0 31 9 1.70000005 5 Magmatic age Not classified Subhedral to euhedral zircon with oscillatory zoning that is more or less overprinted by irregular BSE-bright domains. 207Pb/206Pb-dates range from 1583 ± 12 Ma to 1850 ± 9 Ma. Almost the entire population plots highly discordant with 15 analyses being within a <15% discordance limit. An intercept age yield a 1822 ± 10 Ma (MSWD=1.7, n=9), with U from 811 ppm to 4283 ppm and Th/U from 0.3 to 33.1. Linders 2016 Linders W., 2016: U-Pb geochronology and geochemistry of host rocks to the Bastnäs-type REE mineralization in the Riddarhyttan area, west central Bergslagen, Sweden. Dissertations in Geology at Lund University, No. 466, 62 pp. https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=8871832&fileOId=8871834 2016 xxx Mar 15, 2023, 8:40:45 AM fhm 1 6636550 534232 11F7h
alder.2898 2898 595 COSC-1 borehole Åre (sample at 1900 m drill hole depth) Mica schist Mylonitic micaschist. Shear zone in the lower limit of the Lower Seve Nappe Lower Seve Nappe Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Microgeochemistry lab at the Department of Earth Sciences, at the University of Gothenburg 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 414.0 41.0 41.0 41.0 20 20 0.63 1 Metamorphic age Not classified 17 muscovite and 3 biotite grains.The average age of all three samples (595, 605, 695) were calculated to be 413 ± 12 Ma. 87Rb decay constant to ?87Rb = 1.393 x 10-11 Nebel (2011). Alessandrini 2017 Alessandrini, C., 2017: Radiogenic Dating and Microstructure Analysis of Shear Zones Found Within the Seve Nappe Complex in the Åre Region, Jämtland, Scandinavian Caledonides, Student thesis. Department of Earth Sciences, Uppsala university, 53 pp. http://uu.diva-portal.org/smash/get/diva2:1154572/FULLTEXT01.pdf 2017 xxx Mar 15, 2023, 8:47:37 AM fhm 1 7031598 410235 19D7d
alder.2899 2899 605 COSC-1 borehole Åre (sample at 1950 m drill hole depth) Mica schist Mylonitic micaschist. Shear zone in the lower limit of the Lower Seve Nappe Lower Seve Nappe Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Microgeochemistry lab at the Department of Earth Sciences, at the University of Gothenburg 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 418.0 15.0 15.0 15.0 9 9 0.54000002 1 Metamorphic age Not classified 6 muscovite and 3 biotite. The average age of all three samples (595, 605, 695) were calculated to be 413 ± 12 Ma.87Rb decay constant to ?87Rb = 1.393 x 10-11 Nebel (2011). Alessandrini 2017 Alessandrini, C., 2017: Radiogenic Dating and Microstructure Analysis of Shear Zones Found Within the Seve Nappe Complex in the Åre Region, Jämtland, Scandinavian Caledonides, Student thesis. Department of Earth Sciences, Uppsala university, 53 pp. http://uu.diva-portal.org/smash/get/diva2:1154572/FULLTEXT01.pdf 2017 xxx Mar 15, 2023, 10:47:06 AM fhm 1 7031598 410235 19D7d
alder.2900 2900 695 COSC-1 borehole Åre (sample at 2500 m drill hole depth) Mica schist Mylonitic micaschist. Shear zone in the lower limit of the Lower Seve Nappe Lower Seve Nappe Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Microgeochemistry lab at the Department of Earth Sciences, at the University of Gothenburg 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 396.0 27.0 27.0 27.0 12 12 0.37 1 Metamorphic age Not classified 9 muscovite and 3 biotite. The average age of all three samples (595, 605, 695) were calculated to be 413 ± 12 Ma.87Rb decay constant to ?87Rb = 1.393 x 10-11 Nebel (2011). Alessandrini 2017 Alessandrini, C., 2017: Radiogenic Dating and Microstructure Analysis of Shear Zones Found Within the Seve Nappe Complex in the Åre Region, Jämtland, Scandinavian Caledonides, Student thesis. Department of Earth Sciences, Uppsala university, 53 pp. http://uu.diva-portal.org/smash/get/diva2:1154572/FULLTEXT01.pdf 2017 xxx Mar 15, 2023, 10:47:11 AM fhm 1 7031598 410235 19D7d
alder.2901 2901 595 COSC-1 borehole Åre (sample at 1900 m drill hole depth) Mica schist Mylonitic micaschist. Shear zone in the lower limit of the Lower Seve Nappe Lower Seve Nappe Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown University of Manitoba, in Winnipeg, Canada 6 Ar-Ar Not known Muscovite Weighted average age 423.0 7.0 7.0 7.0 5 5 2.0999999 1 Metamorphic age Not classified 5 muscovite grains dated.The average age of is 423 ± 7.4.Ma (n=5, MSWD is 2.1, 95 % conf.). Alessandrini 2017 Alessandrini, C., 2017: Radiogenic Dating and Microstructure Analysis of Shear Zones Found Within the Seve Nappe Complex in the Åre Region, Jämtland, Scandinavian Caledonides, Student thesis. Department of Earth Sciences, Uppsala university, 53 pp. http://uu.diva-portal.org/smash/get/diva2:1154572/FULLTEXT01.pdf 2017 xxx Mar 15, 2023, 10:47:19 AM fhm 1 7031598 410235 19D7d
alder.2902 2902 695 COSC-1 borehole Åre (sample at 2500 m drill hole depth) Mica schist Mylonitic micaschist. Shear zone in the lower limit of the Lower Seve Nappe Lower Seve Nappe Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown University of Manitoba, in Winnipeg, Canada 6 Ar-Ar Not known Muscovite Weighted average age 424.0 3.0 3.0 3.0 7 6 1.00999999 1 Metamorphic age Not classified 7 muscovite grains dated.The calculated age is 424.4 ± 3.1 Ma (n=6, MSWD of 1.01, 95 % conf.). One outlier exists, with an age of 461 ± 7.6 and was not included in the age calculation. Alessandrini 2017 Alessandrini, C., 2017: Radiogenic Dating and Microstructure Analysis of Shear Zones Found Within the Seve Nappe Complex in the Åre Region, Jämtland, Scandinavian Caledonides, Student thesis. Department of Earth Sciences, Uppsala university, 53 pp. http://uu.diva-portal.org/smash/get/diva2:1154572/FULLTEXT01.pdf 2017 xxx Mar 15, 2023, 10:47:23 AM fhm 1 7031598 410235 19D7d
alder.2903 2903 SM19-03 Lill Blåsjön Paragneiss Paragneiss Sippmikk paragneiss, Seve Nappe complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History, Stockholm, Sweden 1 U-Pb Laser ICP-MS Zircon Concordant age 483.0 4.0 4.0 4.0 47 15 1.89999998 1 Metamorphic age Not classified Zircon core-rim texture with BSE-bright cores commonly oscillatory zoned, and BSE-dark rims. A Wetherill concordia age for rim analyses is calculated to 482.5 ± 3.7 Ma (n = 15; MSWD: 1.9). Zircon core 206Pb/238U dates range from 639.9 ± 15.3 Ma to 1712.9 ± 33.9 Ma with discordance values ranging from -26.4 to 0.6% (n=32).. Barnes et al 2022 Barnes, C.J., Bukala, M., Callegari, R., Walczak, K., Kooijman, E., Kielman-Schmitt, M. & Majka, J., 2022: Zircon and monazite reveal late Cambrian/early Ordovician partial melting of the Central Seve Nappe Complex, Scandinavian Caledonides, Contributions to Mineralogy and Petrology, 177 (9): 92 https://doi.org/10.1007/s00410-022-01958-x 2022 xxx Mar 15, 2023, 1:53:32 PM fhm 1 7179894 463948 22E6f
alder.2904 2904 SM19-02 Lill Blåsjön Paragneiss Paragneiss Sippmikk paragneiss, Seve Nappe Complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History, Stockholm, Sweden 9 U-Th_Pb Laser ICP-MS Monazite 208Pb/232Th age 413.0 457.0 20 1 Metamorphic age Not classified BSE images of monazites demonstrate no obvious chemical zoning. Spread of concordant dates with 208Pb/232Th dates ranging from c. 412.5 to 456.9 Ma (n=20) Barnes et al 2022 Barnes, C.J., Bukala, M., Callegari, R., Walczak, K., Kooijman, E., Kielman-Schmitt, M. & Majka, J., 2022: Zircon and monazite reveal late Cambrian/early Ordovician partial melting of the Central Seve Nappe Complex, Scandinavian Caledonides, Contributions to Mineralogy and Petrology, 177 (9): 92 https://doi.org/10.1007/s00410-022-01958-x 2022 xxx Mar 15, 2023, 1:53:36 PM fhm 1 7179896 463932 22E6f
alder.2905 2905 SM19-03 Lill Blåsjön Paragneiss Paragneiss Sippmikk paragneiss (Avardo gneiss), Seve Nappe Complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History, Stockholm, Sweden 9 U-Th_Pb Laser ICP-MS Monazite Concordant age 421.0 2.0 2.0 2.0 12 12 1.20000005 1 Metamorphic age Not classified BSE images of monazites demonstrate no obvious chemical zoning. Monazite analyses cluster on concordia, producing an age of 420.6 ± 2.0 Ma (MSWD: 1.2; n=12). Barnes et al 2022 Barnes, C.J., Bukala, M., Callegari, R., Walczak, K., Kooijman, E., Kielman-Schmitt, M. & Majka, J., 2022: Zircon and monazite reveal late Cambrian/early Ordovician partial melting of the Central Seve Nappe Complex, Scandinavian Caledonides, Contributions to Mineralogy and Petrology, 177 (9): 92 https://doi.org/10.1007/s00410-022-01958-x 2022 xxx Mar 15, 2023, 1:53:42 PM fhm 1 7179894 463948 22E6f
alder.2906 2906 MJ18-05A Borkasjön Paragneiss Paragneiss Kittelfjäll paragneiss (Marsfjället Gneiss), Seve Nappe Complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History, Stockholm, Sweden 9 U-Th_Pb Laser ICP-MS Monazite Concordant age 482.0 2.0 2.0 2.0 17 17 2.0 1 Metamorphic age Not classified BSE images of the monazite reveal three domains: 1) BSE-dark, homogeneous to weakly zoned cores, (2) BSE-medium, heterogeneously zoned mantles, and (3) BSE-bright, homogeneous rims.Seventeen geochronological analyses of the cores cluster in 208Pb/232Th vs. 206Pb/238U concordia space, providing an age of 481.6 ± 2.1 Ma (MSWD: 2.0; n=17) Barnes et al 2022 Barnes, C.J., Bukala, M., Callegari, R., Walczak, K., Kooijman, E., Kielman-Schmitt, M. & Majka, J., 2022: Zircon and monazite reveal late Cambrian/early Ordovician partial melting of the Central Seve Nappe Complex, Scandinavian Caledonides, Contributions to Mineralogy and Petrology, 177 (9): 92 https://doi.org/10.1007/s00410-022-01958-x 2022 xxx Mar 15, 2023, 1:53:46 PM fhm 1 7236715 519632 23F7g
alder.2907 2907 MJ18-05A Borkasjön Paragneiss Paragneiss Kittelfjäll paragneiss (Marsfjället Gneiss), Seve Nappe Complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History, Stockholm, Sweden 9 U-Th_Pb Laser ICP-MS Monazite Concordant age 477.0 2.0 2.0 2.0 463.0 489.0 64 64 4.30000019 1 Metamorphic age Not classified BSE images of the monazite reveal three domains: 1) BSE-dark, homogeneous to weakly zoned cores, (2) BSE-medium, heterogeneously zoned mantles, and (3) BSE-bright, homogeneous rims. Analyses of the mantles (n=40) and rims (n=24) produced indistinguishable results in concordia space and range from c. 493 to 455 Ma with an averageconcordia age of 476.6 ± 1.5 Ma (MSWD: 4.3, n=64).To delimit the endmember ages of the collective mantle and rim results, the ten oldest and ten youngest analyses were used to calculate ages, yielding 488.9 ± 1.9 Ma (MSWD: 0.8) and 463.1 ± 1.8 Ma (MSWD: 1.1), respectively. Barnes et al 2022 Barnes, C.J., Bukala, M., Callegari, R., Walczak, K., Kooijman, E., Kielman-Schmitt, M. & Majka, J., 2022: Zircon and monazite reveal late Cambrian/early Ordovician partial melting of the Central Seve Nappe Complex, Scandinavian Caledonides, Contributions to Mineralogy and Petrology, 177 (9): 92 https://doi.org/10.1007/s00410-022-01958-x 2022 xxx Mar 15, 2023, 2:28:15 PM fhm 1 7236715 519632 23F7g
alder.2908 2908 Ekorråsen-Siksjöberget Nepheline syenite Särnaite (Canrinite nepheline syenite) Särna alkaline complex Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Stratigraphic position unknown Microgeochemistry lab at the Department of Earth Sciences, at the University of Gothenburg 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 294.0 22.0 22.0 22.0 24 24 1.00999999 5 Magmatic age Not classified 24-point isochron from särnaite and cancrinite syenite samples with K-feldspar, titanite and cancrinite grains yielded an age of 294±22 Ma (2s; MSWD = 1.01). Initial 87Sr/86Sr = 0,70488±0.00087 Eliasson 2018 Eliasson, J., 2018: Investigation of the Särna alkaline complex in Dalarna, Sweden, Master of Science (120 credits) thesis B1019, University of Gothenburg, 53 pp. https://studentportal.gu.se/digitalAssets/1703/1703972_b1019.pdf 2018 xxx Mar 15, 2023, 2:56:32 PM fhm 1 6845159 388612 15C9j
alder.2909 2909 AS13-02 Ekorråsen-Siksjöberget Nepheline syenite Tinguaite (phonolite) Särna alkaline complex Post-Svecokarelian, Proterozoic rocks Post-Svecokarelian, Proterozoic rocks Stratigraphic position unknown Microgeochemistry lab at the Department of Earth Sciences, at the University of Gothenburg 2 Rb-Sr Laser ICP-MS Biotite Isochron age 302.0 8.0 8.0 8.0 18 18 0.81 5 Magmatic age Not classified A 18-point isochron from a tinguaite sample based on biotite grains yielded an age of 301.9 ± 7.8 Ma (1s) with a MSWD of 0.81. The initial value was forced to 0.706 based on data from Bylund and Patchett (1977). Eliasson 2018 Eliasson, J., 2018: Investigation of the Särna alkaline complex in Dalarna, Sweden, Master of Science (120 credits) thesis B1019, University of Gothenburg, 53 pp. https://studentportal.gu.se/digitalAssets/1703/1703972_b1019.pdf 2018 xxx Mar 16, 2023, 11:04:19 AM fhm 1 6845159 388612 15C9j
alder.2910 2910 TB2 Luobákte Claystone claystone Torneträsk formation. (“lower siltstone” interval) Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Boise State University Isotope Geology Laboratory 1 U-Pb Laser ICP-MS Zircon Weighted average 206Pb/238U age 584.0 13.0 13.0 13.0 140 2.0 0.09 9 Maximum depositional age Not classified Dates of zircon range from 3331 ± 27 to 569 ± 19 Ma. All except one grain yielded dates of 953 ± 51 Ma and older. Peaks in probability density plot are at 2690, 1760, 1200, and 1010 Ma. The five youngest dates are from a single grain and yield a weighted mean 206Pb/238U age of 584 ± 13 Ma (2s, MSWD = 2.0, probability of fit = 0.09), interpreted as the maximum depositional age.. McLoughlin et al 2021 McLoughlin, S., Vajda, V., Topper, T.P., Crowley, J.L., Liu, F., Johansson, O. & Skovsted, C.B., 2021: Trace fossils, algae, invertebrate remains and new U-Pb detrital zircon geochronology from the lower Cambrian Torneträsk Formation, northern Sweden, GFF, 1–31. https://doi.org/10.1080/11035897.2021.1939775 2021 xxx Mar 16, 2023, 1:50:35 PM fhm 1 7574252 685398 30J4a
alder.2911 2911 ARK11 Aurek Gabbro Metagabbro Aurek metagabbro Vássacorru Igneous Complex Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Zircon Concordant age 609.0 3.0 3.0 3.0 45 36 2.29999995 5 Magmatic age Not classified The zircon grains were subhedral grains to anhedral fragments in shape, varying in size from 80 µm – 450 µm.Conordia age of 609±2.5 Ma (2s, n=36, MSWD: 2.3). 9 datapoints were removed from the plotted concordia diagram as they either plotted outside the confidence interval of 2 s or gave a dispersion of ages in the dataset from 630 – 430 Ma. Rousku 2021 Rousku, S. 2021, Unraveling the Tectonic History of the Aurek Metagabbro within the Seve Nappe Complex, Scandinavian Caledonides, Student thesis https://uu.diva-portal.org/smash/get/diva2:1601071/FULLTEXT01.pdf 2021 xxx Mar 16, 2023, 2:35:51 PM fhm 1 7527154 637405 29I5a
alder.2912 2912 ARK13 Aurek Gabbro Metagabbro Aurek metagabbro Vássacorru Igneous Complex Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter, Swedish Museum of Natural History, Stockholm 1 U-Pb Laser ICP-MS Zircon Concordant age 614.0 2.0 2.0 2.0 13 9 0.5 5 Magmatic age Not classified The zircon grains were subhedral grains to anhedral fragments in shape, varying in size from 80 µm – 450 µm.Conordia age of 614±2.3 Ma (2s, n=9, MSWD: 0.5). Four of the points in sample ARK13 were excluded from the concordia diagram, as they generated a dispersion in the dataset from approximately 676 Ma to 596 Ma, as the majority of analytical points plotted between 620 – 610 Ma Rousku 2021 Rousku, S. 2021, Unraveling the Tectonic History of the Aurek Metagabbro within the Seve Nappe Complex, Scandinavian Caledonides, Student thesis https://uu.diva-portal.org/smash/get/diva2:1601071/FULLTEXT01.pdf 2021 xxx Mar 16, 2023, 2:49:42 PM fhm 1 7527696 636713 29I5a
alder.2913 2913 VC18-05A Salmmecohkat Paragneiss Migmatitic paragneiss Upper gneiss unit, Seve nappe complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown Vegacenter at the Swedish Museum of Natural History, Stockholm 1 U-Pb ICP-MS Zircon Weighted average 206Pb/238U age 602.0 5.0 5.0 5.0 42 5 2.29999995 0.057 1 Metamorphic age Not classified Complex internal zircon structures involving cores and overgrowths.Core analyses were concordant or near concordant with age popuations at 1.8-1.7 Ga, 1.6-1.4 Ga, 1.23 Ga and 1.1-0.9 Ga. The youngest detrital zircon found in the paragneiss was dated to c. 897 Ma. Overgrowths show two age clusters, seven older dates similar to cores and five analyses that are distinctly younger, slightly discordant, providing late Neoproterozoic dates with a weighted average of 602.1 ± 5.1 Ma and lower discordia intercept of 594 ± 11 Ma. The discordance may result from mixed analyses of cores and overgrowths. Walczak et al 2022 Walczak, K., Ziemniak, G., Barnes, C., Callegari, R., Bukala, M., Kielman-Schmitt, M., Zagórska, A. & Majka, J., 2022: Late Neoproterozoic extended continental margin development recorded by the Seve Nappe Complex of the northern Scandinavian Caledonides, Lithos, 416–417: 106640 https://doi.org/10.1016/j.lithos.2022.106640 2022 xxx Mar 16, 2023, 4:29:37 PM fhm 1 7599650 678600 30I9j
alder.2914 2914 VC18-05A Salmmecohkat Paragneiss Migmatitic paragneiss Upper gneiss unit, Seve nappe complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown State Geological Institute of Dion?z Stúr in Bratislava 9 U-Th_Pb EMP U-Th total-Pb Monazite Weighted average age 599.0 3.0 3.0 3.0 64 63 1.19000006 0.15000001 1 Metamorphic age Not classified BSE images do not reveal any internal zoning in most of the studied monazite grains and chemical analyses show no internal variation within the grains or significant differences between them. Calculation of the model dates (n = 63) yielded a weighted average of 599.0 ± 3.1 Ma. One analysis with date of 470 ± 23 Ma from a small (~15 µm) and fragmented grain included in garnet was excluded from the calculation of the weighted average. Walczak et al 2022 Walczak, K., Ziemniak, G., Barnes, C., Callegari, R., Bukala, M., Kielman-Schmitt, M., Zagórska, A. & Majka, J., 2022: Late Neoproterozoic extended continental margin development recorded by the Seve Nappe Complex of the northern Scandinavian Caledonides, Lithos, 416–417: 106640 https://doi.org/10.1016/j.lithos.2022.106640 2022 xxx Mar 16, 2023, 4:29:42 PM fhm 1 7599650 678600 30I9j
alder.2915 2915 SWE3-1 Åreskutan Paragneiss Paragneiss Åreskutan nappe, Seve nappe complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 9 U-Th_Pb EMP U-Th total-Pb Monazite Weighted average age 463.0 12.0 12.0 12.0 5 2.29999995 1 Metamorphic age Not classified High-Y monazite enclosed in garnet yielded a weighted mean age of 463 ± 12 (2s) Ma (MSWD=2.3, n=5). Li et al 2020 Li, B., Massonne, H.-J. & Zhang, J., 2020: Evolution of a gneiss in the Seve nappe complex of central Sweden – Hints at an early Caledonian, medium-pressure metamorphism, Lithos, 105746. https://doi.org/10.1016/j.lithos.2020.105746 2020 xxx Mar 20, 2023, 6:25:17 AM fhm 1 7034577 403902 19D7c
alder.2916 2916 SWE3-1 Åreskutan Paragneiss Paragneiss Åreskutan nappe, Seve nappe complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 9 U-Th_Pb EMP U-Th total-Pb Monazite Weighted average age 458.0 7.0 7.0 7.0 14 2.29999995 1 Metamorphic age Not classified Low-Y monazite enclosed in garnet gave a weighted mean age of 457.5 ± 6.7 (2s) Ma (MSWD =2.3, n=14). Li et al 2020 Li, B., Massonne, H.-J. & Zhang, J., 2020: Evolution of a gneiss in the Seve nappe complex of central Sweden – Hints at an early Caledonian, medium-pressure metamorphism, Lithos, 105746. https://doi.org/10.1016/j.lithos.2020.105746 2020 xxx Mar 20, 2023, 7:14:49 AM fhm 1 7034577 403902 19D7c
alder.2917 2917 SWE3-1 Åreskutan Paragneiss Paragneiss Åreskutan nappe, Seve nappe complex Middle Allochthon Caledonian Orogen Seve Nappe Complex Stratigraphic position unknown 9 U-Th_Pb EMP U-Th total-Pb Monazite Weighted average age 448.0 7.0 7.0 7.0 10 1.5 1 Metamorphic age Not classified Matric monazite around garnet yielded a weighted mean age of 447.8 ± 6.7 (2s) Ma (MSWD=1.5, n=10). Li et al 2020 Li, B., Massonne, H.-J. & Zhang, J., 2020: Evolution of a gneiss in the Seve nappe complex of central Sweden – Hints at an early Caledonian, medium-pressure metamorphism, Lithos, 105746. https://doi.org/10.1016/j.lithos.2020.105746 2020 xxx Mar 20, 2023, 7:14:53 AM fhm 1 7034577 403902 19D7c
alder.2918 2918 Liikavaara Östra (coordinates for sample are not given) Granodiorite Porphyritic granodiorite with plagioclase phenocrysts. The rock is massive in character with no clear oriented fabric.The granodiorite occur in the footwall, north-east of the Liikavaara Östra Cu-(W-Au) deposit Svecokarelian Orogen Norrbotten lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Vegacenter micro-analytical facility at the Swedish Museum of Natural History in Stockholm, Sweden 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1875.0 2.0 2.0 2.0 66 20 1.5 5 Magmatic age Not classified Stubby to elongated, partly rounded and broken zircon with common oscillatory zoning. Many fractured grains show partially BSE-dark cores. 13 analyses of cores with Pb-phase inclusions caused erroneous data that were discarded. An upper intercept age was calculated at 1887 ± 22 Ma and a lower intercept age at 387 ± 20 Ma with a MSWD of 20 (n=66). 20 analyses are concordant and yields concordia age of 1873.7 ± 5.2 Ma with a MSWD (of concordance and equivalence) of 1.6. A 207Pb–206Pb weighted average age of the same analyses yields 1874.6 ± 1.8 Ma with a MSWD of 1.5. Warlo et al 2020 Warlo, M., Wanhainen, C., Martinsson, O. & Karlsson, P., 2020: Mineralogy and character of the Liikavaara Östra Cu-(W-Au) deposit, northern Sweden, GFF, 142(3): 169–189 https://doi.org/10.1080/11035897.2020.1753807 2020 xxx Mar 20, 2023, 10:27:57 AM fhm 1 7453050 762390 28K0f
alder.2919 2919 STB181050A Frövi Migmatite Metatexite (mesosome part) Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1896.0 42.0 42.0 42.0 911.0 180.0 10 6 3.20000005 9 Maximum depositional age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 20, 2023, 4:56:09 PM fhm 1 6588338 512680 10F8d
alder.2920 2920 STB181050A Frövi Migmatite Metatexite (leucosome part) Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1853.0 8.0 8.0 8.0 346.0 11.0 8 6 1.5 1 Metamorphic age Not classified The c. 1853 Ma UI date is interpreted to constrain the timing of leucosome segregation and protolith migmatization. The UI date overlaps with a weighted average apparent 207Pb/206Pb date of c. 1848 Ma for two concordant analyses from the same array. Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6588338 512680 10F8d
alder.2921 2921 STB191023A Frövi Granodiorite Metagranodiorite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GDG/GSDG c. 1.96-1.87 Ga (Early Svecokarelian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1896.0 6.0 6.0 6.0 380.0 32.0 10 9 1.60000002 5 Magmatic age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6590932 514977 10F9d
alder.2922 2922 STB191045A Rinkaby Granite Biotite-muscovite granite, massive (undeformed) Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1817.0 14.0 14.0 14.0 11 2 5 Magmatic age Not classified Of 11 analysed spots, seven plot on Concordia (Tera-Wasserburg) and define three distinct age populations with corresponding weighted average 207Pb/206Pb dates of c. 1896 ± 9 Ma, 1852 ± 7 Ma, and 1817 ± 14 Ma. The younger of the three dates (c.1817 Ma) as the approximate crystallisation age of the granite, with the other dates representing older geological events recorded by inherited zircons Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6576815 520332 10F5e
alder.2923 2923 STB191044A Frövi Granite Biotite granite, massive, megacrystic Fellingsbro granite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1796.0 10.0 10.0 10.0 10 10 2.29999995 0.02 5 Magmatic age Not classified MSWD (conc. & equiv.) = 2.3, 95% confidence Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6595826 523570 10F9f
alder.2924 2924 STB191003A Lindesberg Granite Biotite-muscovite granite, massive, equigranular, with pegmatitic domains Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1784.0 75.0 75.0 75.0 429.0 6.0 10 8 5.19999981 5 Magmatic age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6610879 509125 11F2c
alder.2925 2925 STB181051A Frövi Granite Biotite-muscovite granite, massive, equigranular Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1772.0 27.0 27.0 27.0 247.0 130.0 33 7 13.0 5 Magmatic age Not classified From 33 analysed spots, seven form a discordant array that gives an imprecise upper intercept (UI) date of 1772 ± 27 Ma (MSWD = 13). A subset population of eight concordant analyses yields a Concordia date of 1905 ± 9 Ma interpreted to represent an older magmatic event recorded by inherited zircons. Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6590987 514750 10F8d
alder.2926 2926 ELH190017A Malingsbo central Granite Biotite granite, massive (undeformed), pale pink, seriate to megacrystic Malingsbo granite Malingsbo massif Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1860.0 6.0 6.0 6.0 15 13 1.20000005 0.22 0 not known Not classified The c. 1860 Ma date represents either the crystallisation age of the granite or a population of inherited zircons formed during a previous tectonothermal event Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6645214 517062 11F9d
alder.2927 2927 ELH190051A Enkullen (Malingsbo north) Granite Biotite granite, massive, grey to pale pink, seriate to megacrystic Enekullen granite Malingsbo massif Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1804.0 8.0 8.0 8.0 12 7 0.99000001 0.46000001 5 Magmatic age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6657263 504934 12F1c
alder.2928 2928 ELH190002A Malingsbo east Granite Biotite granite, massive, pale pink, equigranular with late pegmatitic zones. Malingsbo granite Malingsbo massif Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Weighted average 207Pb/206Pb age 1804.0 6.0 6.0 6.0 11 2 5 Magmatic age Not classified Concordant analyses (n=6) define three populations with weighted average apparent 207Pb/206Pb dates of c. 1898 ± 7 Ma (n=3), 1851 ± 6 Ma (n=1), and 1804± 6 Ma (n=2). The younger of these dates (c. 1804 Ma) is interpreted as the crystallisation age of the granite and the older dates as magmatic events recorded by inherited zircons. Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6644418 524300 11F9f
alder.2929 2929 ELH190029A Malingsbo south Granite Biotite granite, weak to moderately foliated, reddish grey, biotite granite with augen texture Malingsbo granite Malingsbo massif Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1800.0 14.0 14.0 14.0 10 3 2.79999995 0.02 5 Magmatic age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6633271 517204 11F7e
alder.2930 2930 ELH200018A Malingsbo west Granite Biotite granite, massive, pink to red, megacrystic Malingsbo granite Malingsbo massif Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1795.0 7.0 7.0 7.0 11 5 0.56999999 0.82999998 5 Magmatic age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6640657 510247 11F8d
alder.2931 2931 ELH200081A Sandudden Granite Biotite granite, massive (undeformed), pale pink, seriate to megacrystic Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon 207Pb/206Pb age 1820.0 10 1 5 Magmatic age Not classified Of 10 analysed spots, six produced a strongly discordant array that gives an imprecise UI-age of 1847 ± 39 Ma, with the least discordant analysis (spot 3) having an apparent 207Pb/206Pb date of 1820 ± 15 Ma (2s). The single c. 1820 Ma 207Pb/206Pb date was suggested to best represent the approximate emplacement age of the granite. Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6662316 491664 12E2j
alder.2932 2932 ELH200020A Hörken Granite Biotite granite, massive, pale pink to red, equigranular Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1817.0 23.0 23.0 23.0 368.0 14.0 14 7 1.79999995 5 Magmatic age Not classified Of 14 analysed spots, seven produced a discordant array that gives an imprecise upper intercept date of 1817 ± 23 Ma. A single concordant analysis (spot 7) has an apparent 207Pb/206Pb date of 1898 ± 11 Ma and reflects the inheritance of older crustal material. Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6653649 497676 12F1a
alder.2933 2933 ELH200096A Elgfall Granite Biotite granite, massive, pale pink to red, equigranular to pegmatitic Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1806.0 46.0 46.0 46.0 318.0 91.0 11 6 20.0 5 Magmatic age Not classified Of 11 analysed spots, six produced a discordant array that gives an imprecise upper intercept (UI) date of 1806 ± 46 Ma (MSWD=20) interpreted to date the approx. crystallisation age of the granite. Two concordant analyses (spots 10 and 11) have apparent 207Pb/206Pb dates of c.1902 and 1894 Ma and indicate the inheritance of older crustal material. Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6638897 502591 11F8b
alder.2934 2934 ELH200067A Wigström Granite Biotite microgranite dyke that crosscuts metavolcanic rocks in the hanging wall of the Wigström skarn W-F deposit Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1798.0 93.0 93.0 93.0 406.0 26.0 10 7 4.19999981 5 Magmatic age Not classified Of 10 analysed spots, seven produced a discordant array that yields an imprecise upper intercept (UI) date of 1798 ± 93 Ma. Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6648039 499413 12F0a
alder.2935 2935 ELH200106A Yxsjöby Granite Biotite microgranite, massive, pale pink to red, crosscuts dacitic-rhyolitic metavolcanic rocks in the Yxsjöby area, about 1.5 km north of the Yxsjöberg skarn W-Cu-Fdeposit Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1790.0 13.0 13.0 13.0 10 4 2.0 0.049 5 Magmatic age Not classified Of 10 analysed spots, four concordant analyses give a relatively precise Concordia date of 1790 ± 13 Ma which is interpreted as the emplacement age of the granitic dyke Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6658733 487901 12E2i
alder.2936 2936 ELH190054A Bispbergs klack Granite Biotite granite, massive, pale grey-pink to red, equigranular to seriate, with disseminated molybdenite Bispbergs Klack granite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1787.0 24.0 24.0 24.0 388.0 20.0 8 4.0999999 5 Magmatic age Not classified Of 10 analyses, eight plot along a discordant array that gives an imprecise upper intercept date of 1787 ± 24 Ma, with the least discordant analysis (spot 9) having an apparent 207Pb/206Pb age of 1780 +/-10 Ma (2s). Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6691617 545140 12G8a
alder.2937 2937 ELH170002A Pingstaberg Granite Intragranitic molybdenite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Department of Earth Sciences, Durham University, UK 4 Re-Os N-TIMS Molybdenite Model age 1801.0 10.0 10.0 10.0 8 Mineralisation age Not classified Lynch et al 2019 Lynch, E., Ripa, M., Selby, D. & Antal Lundin, I., 2019: Mo mineralization in western Bergslagen, Sweden, marks pre- and late-collisional tectonothermal events during Svecokarelian orogenesis. Glasgow, England. 2019 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6655258 492894 12E1j
alder.2938 2938 ELH200033A Hörken Silvergruvan Skarn Pyroxene skarn rock with minor disseminated molybdenite, scheelite and pyrite from the Silvergruvan Mo-W prospect near Hörken Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, Durham University, UK 4 Re-Os N-TIMS Molybdenite Model age 1802.0 10.0 10.0 10.0 8 Mineralisation age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6653964 496760 12F1a
alder.2939 2939 ELH190085A Wigström Skarn Pyroxene-garnet-fluorite skarn rock with minor disseminated molybdenite (c. 1–2 vol. %) and scheelite that is representative of high-grade skarn ore at the Wigström W-Mo deposit Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, Durham University, UK 4 Re-Os N-TIMS Molybdenite Model age 1799.0 10.0 10.0 10.0 8 Mineralisation age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6648073 499432 12F0a
alder.2940 2940 ELH190087A Wigström Pegmatite Pegmatoid-hosted molybdenite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Department of Earth Sciences, Durham University, UK 4 Re-Os N-TIMS Molybdenite Model age 1798.0 10.0 10.0 10.0 8 Mineralisation age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6648061 499458 12F0a
alder.2941 2941 ELH190054A Bispbergs klack Granite Disseminated molybdenite in granite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Department of Earth Sciences, Durham University, UK 4 Re-Os N-TIMS Molybdenite Model age 1792.0 10.0 10.0 10.0 8 Mineralisation age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6691617 545140 12G8a
alder.2942 2942 ELH200026A Grantorp Skarn Garnet-pyroxene-quartz skarn rock with disseminated scheelite and molybdenite (c. 0.5–1 vol. %) from the Grantorp Mo-W prospect near Hörken Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, Durham University, UK 4 Re-Os N-TIMS Molybdenite Model age 1770.0 11.0 11.0 11.0 8 Mineralisation age Not classified Lynch et al 2023 Lynch, E.P., Berggren, R. & Bergman, S., 2023: Geochemical and Geophysical Assessment of c. 1.8 Ga Granites Associated with W-F ± Mo Mineralisation, Western Bergslagen. SGU-rapport 2023:13, 75 pp. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202313rapport/s2313-rapport.pdf 2023 xxx Oct 23, 2023, 9:00:00 AM fhm 1 6654082 497560 12F1a
alder.2943 2943 Gryts bruk Rhyolite Quartz-feldspar porphyritic metarhyolite, occasionally with faint planar centimeter-scale banding or layering Igelfors rhyolites Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1908.0 4.0 4.0 4.0 64 32 0.50999999 5 Magmatic age Not classified Exluding one analysis with archean date remaining analyses defined discordia with an upper intercept age of 1904 ± 6 Ma (MSWD = 6.5). A concordia age is calculated at 1908 ± 4 Ma (MSWD = 0.88, 2s), excluding three spots at 1840 Ma, as well as two spot with 207Pb/206Pb ages of 1885 ± 7 and 1882 ± 6 Ma respectively. Jansson et al 2023 Jansson, N.F., Simán, F., Allen, R.L., Mansfeld, J. and Kampmann, T.C, 2023: Age constraints on c. 1.9 Ga volcanism, basin evolution and mineralization at the world-class Zinkgruvan Zn-Pb-Ag(-Cu) deposit, Bergslagen, Sweden. Precambrian Research, 395, 107131 https://doi.org/10.1016/j.precamres.2023.107131 2023 xxx Oct 23, 2023, 9:56:36 AM fhm 1 6528790 521060 9F6e
alder.2944 2944 Dammetorp, Godegård Rhyolite Feldspar-porphyric rhyolite Godegård volcanic unit Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1898.0 5.0 5.0 5.0 41 30 1.60000002 5 Magmatic age Not classified An upper intercept age is calculated at 1900 ± 5 Ma (MSWD = 3.9, n= 38), excluding one concordant Archean spot and two reversely discordant points. Concordant analyses give a concordia age of 1898 ± 5 Ma (MSWD = 1.6, n=30, 95 % conf.). Jansson et al 2023 Jansson, N.F., Simán, F., Allen, R.L., Mansfeld, J. and Kampmann, T.C, 2023: Age constraints on c. 1.9 Ga volcanism, basin evolution and mineralization at the world-class Zinkgruvan Zn-Pb-Ag(-Cu) deposit, Bergslagen, Sweden. Precambrian Research, 395, 107131 https://doi.org/10.1016/j.precamres.2023.107131 2023 Mar 26, 2024, 12:00:00 AM fhm Oct 23, 2023, 2:00:59 PM fhm 1 6510090 503690 9F2b
alder.2945 2945 Zinkgruvan stratigraphic footwall (423.1–423.97 m interval in exploration drill core 4321) Dacite Feldspar-porphyritic coherent dacite (subvolcanic?) Mariedamm volcanic unit Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Upper intercept age 1898.0 5.0 5.0 5.0 0.0 34 5 0.47 5 Magmatic age Not classified The data form a scattered array that yield a upper intercept age of 1879 ± 26 Ma (MSWD = 7.3) with a lower intercept at 388 ± 77 Ma). Using five near concordant data points and an anchored lower intercept at 0 Ma, an upper intercept age of 1898 ± 5 Ma (MSWD of 0.47, 95% conf.) is calulated. Jansson et al 2023 Jansson, N.F., Simán, F., Allen, R.L., Mansfeld, J. and Kampmann, T.C, 2023: Age constraints on c. 1.9 Ga volcanism, basin evolution and mineralization at the world-class Zinkgruvan Zn-Pb-Ag(-Cu) deposit, Bergslagen, Sweden. Precambrian Research, 395, 107131 https://doi.org/10.1016/j.precamres.2023.107131 2023 xxx Oct 23, 2023, 2:01:03 PM fhm 1 6521130 505890 9F4b
alder.2946 2946 g27943 Kirunavaara (approximate coordinates) Apatite iron ore Apatite-magnetite ore Svecokarelian Orogen Norrbotten lithotectonic unit Stratigraphic position unknown Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) 1 U-Pb SIMS Apatite Lower intercept age 1800.0 36.0 36.0 36.0 25 25 1.20000005 6 Hydrothermal age Not classified The lower intercept age of apatite is 1800 ± 36 Ma at an assigned common 207Pb/206Pb composition of 1.09 based on the model of Stacey and Kramers (1975). Yan et al 2023a Yan, S., Wan, B. & Andersson, U.B., 2023: Hydrothermal circulation at 1.8 Ga in the Kiruna area, northern Sweden, as revealed by apatite geochemical systematics. Precambrian Research 395, 107151 https://doi.org/10.1016/j.precamres.2023.107151 2023 xxx Oct 26, 2023, 8:31:53 AM fhm 1 7533360 718440 29J6g
alder.2947 2947 g27928 Malmberget (approximate coordinates) Apatite iron ore Apatite-magnetite ore Svecokarelian Orogen Norrbotten lithotectonic unit Stratigraphic position unknown Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) 1 U-Pb SIMS Apatite Lower intercept age 1809.0 8.0 8.0 8.0 31 31 1.5 1 Metamorphic age Not classified Two samples Mal 1 & Mal 2 were plotted together yielding a lower intercept age of 1809 ± 8 Ma. Plotting the data of Mal 1 and Mal 2 separately on Tera–Wasserburg diagrams yields lower intercept ages of 1820 ± 11 Ma and 1798 ± 11 Ma, respectively. Yan et al 2023b Yan, S., Wan, B. & Andersson, U.B., 2023: Apatite age and composition: A key to the geological history of the Malmberget Iron-Oxide-Apatite (IOA) deposit and the region. Journal of Geochemical Exploration 252, 107267 https://doi.org/10.1016/j.gexplo.2023.107267 2023 xxx Oct 26, 2023, 8:49:40 AM fhm 1 7462370 745400 28K2c
alder.2948 2948 CU19-09 Näsbyholm quarry Monzodiorite Syenodiorite and syenite, undeformed,as well as deformed and recrystallised samples Vaggeryd syenite complex Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock c. 1.27-1.20 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1230.0 2.0 2.0 2.0 50 5 Magmatic age Not classified Igneous zircon analyses from six samples of syenodiorite and syenite. Two zircon types: 1. Anhedral crystal fragments with no or broad zoning. 2. Crystal with prismatic shapes and convoluted zoning. Concordia ages of indiviual samples range from 1236±6 Ma to 1227±6 Ma. Urueña & Möller 2024 Urueña, C.L. & Möller, C., 2024: Fluid-Induced Metamorphism and Deformation at the Eastern Boundary of the Sveconorwegian Province. Journal of Petrology 65, 1-24. https://doi.org/10.1093/petrology/egae008 2024 xxx Aug 7, 2024, 7:11:14 AM fhm 1 6343804 447997 5D9j
alder.2949 2949 CU19-09J Näsbyholm quarry Monzodiorite Syenodiorite, pristine grey orthopyroxene-bearing Vaggeryd syenite complex Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock c. 1.27-1.20 Ga Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Baddeleyite Weighted average 207Pb/206Pb age 1231.0 15.0 15.0 15.0 5 5 5 Magmatic age Not classified Five baddeleyite crystals without zircon coronas. Urueña & Möller 2024 Urueña, C.L. & Möller, C., 2024: Fluid-Induced Metamorphism and Deformation at the Eastern Boundary of the Sveconorwegian Province. Journal of Petrology 65, 1-24. https://doi.org/10.1093/petrology/egae008 2024 xxx Aug 7, 2024, 7:51:18 AM fhm 1 6343804 447997 5D9j
alder.2950 2950 CU19-09C Näsbyholm quarry Monzodiorite Syenodiorite, deformed Vaggeryd syenite complex Sveconorwegian Orogen Eastern Segment, upper unit Intrusive rock c. 1.27-1.20 Ga Nordsim, Swedish Museum of Natural History, Stockholm 8 Pb-Pb SIMS Zircon Weighted average 206Pb/238U age 915.0 42.0 42.0 42.0 7 7 12.0 1 Metamorphic age Not classified 10-50 µm large xenomorphic zircon with ‘raspberry texture’. Seven analyses resulted in common-Pb corrected dates ranging from 996 ± 103 to 839 ± 19 Ma. The weighted average of seven common-Pb corrected 206Pb/238U ages is 915 ± 42 Ma (MSWD = 12, 95% conf. Level). Large amount of common Pb resulted in a large spread in ages with a high MSWD and did not allow calculation of a concordia age. Urueña & Möller 2024 Urueña, C.L. & Möller, C., 2024: Fluid-Induced Metamorphism and Deformation at the Eastern Boundary of the Sveconorwegian Province. Journal of Petrology 65, 1-24. https://doi.org/10.1093/petrology/egae008 2024 xxx Aug 7, 2024, 8:02:56 AM fhm 1 6343804 447997 5D9j
alder.2951 2951 HH603:22 Göteborg centre Carbonate dominated hydrothermal vein or segregation Fracture fill/coating with calcite, illite, chlorite, sulfides and adularia; 81°/80° Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 347.0 4.0 4.0 4.0 28 1.14999998 0.27000001 8 Mineralisation age Not classified 347.4 ± 3.5 Ma (2s); kf (n=22), cc (n=6); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:48:38 PM fhm 1 6399201 318971 7B0e
alder.2952 2952 HH603:22 Göteborg centre Carbonate dominated hydrothermal vein or segregation Fracture fill/coating with calcite, illite, chlorite, sulfides and adularia; 81°/80° Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 301.0 7.0 7.0 7.0 9 1.5 0.16 8 Mineralisation age Not classified 300.8 ± 6.9 Ma (2s); kf (n=7), cc (n=3); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:49:32 PM fhm 1 6399201 318971 7B0e
alder.2953 2953 HH630:S12 Göteborg centre Carbonate dominated hydrothermal vein or segregation Fracture fill/coating with calcite, illite, chlorite, sulfides and adularia Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 794.0 17.0 17.0 17.0 9 1.20000005 0.30000001 8 Mineralisation age Not classified 794 ± 17 Ma (2s); kf (n=8), cc (n=1); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:49:41 PM fhm 1 6398477 318942 7B0e
alder.2954 2954 HH603:25 Göteborg centre Carbonate dominated hydrothermal vein or segregation Fracture fill/coating with calcite, illite, chlorite, sulfides and adularia; 50°/84° Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 391.0 5.0 5.0 5.0 14 1.5 0.11 8 Mineralisation age Not classified 391.3 ± 5.2 Ma (2s); kf (n=12), cc (n=2); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:50:27 PM fhm 1 6399201 318971 7B0e
alder.2955 2955 HH603:27 Göteborg centre Carbonate dominated hydrothermal vein or segregation Fracture fill/coating with calcite, illite, chlorite, sulfides and adularia; Network of veins Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 797.0 18.0 18.0 18.0 6 0.74000001 0.56 8 Mineralisation age Not classified 797 ± 18 Ma (2s); kf (n=5), cc (n=1); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:50:27 PM fhm 1 6399201 318971 7B0e
alder.2956 2956 KBH8:35 Göteborg centre Carbonate dominated hydrothermal vein or segregation Fracture fill/coating with calcite, illite, chlorite, sulfides and adularia Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 387.0 6.0 6.0 6.0 15 1.70000005 0.053 8 Mineralisation age Not classified 386.5 ± 5.7 Ma (2s); ill (n=11), cc (n=4); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:50:27 PM fhm 1 6400302 319086 7B0e
alder.2957 2957 Färjenäs Färjenäs, Göteborg Carbonate dominated hydrothermal vein or segregation Calcite-K-feldspar vein; 70°/75° Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 356.0 5.0 5.0 5.0 14 1.29999995 0.18000001 8 Mineralisation age Not classified 355.5 ± 4.9 Ma (2s); kf (n=11), cc (n=3); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:50:27 PM fhm 1 6400015 316692 7B0d
alder.2958 2958 Sörhallsberget Sörhallsberget, Göteborg Carbonate dominated hydrothermal vein or segregation Calcite-K-feldspar vein; 85°/80° Sveconorwegian Orogen Idefjorden Terrane Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 782.0 7.0 7.0 7.0 15 0.64999998 0.81999999 8 Mineralisation age Not classified 782.1 ± 7.4 Ma (2s); kf (n=8), cc (n=7); Rb decay constant Villa et al. 2015 Drake et al 2023 Drake, H., Tillberg, M., Reinhardt, M., Whitehouse, M.J. and Kooijman, E., 2023: In Situ Rb/Sr Geochronology and Stable Isotope Geochemistry Evidence for Neoproterozoic and Paleozoic Fracture-Hosted Fluid Flow and Microbial Activity in Paleoproterozoic Basement, SW Sweden. Geochemistry, Geophysics, Geosystems, 24, e2023GC010892, 1-20. https://doi.org/10.1029/2023GC010892 2023 xxx Aug 7, 2024, 2:50:27 PM fhm 1 6399130 315650 7B0d
alder.2959 2959 KFM01B:433 Forsmark Hydrothermal vein or fracture filling Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1447.0 45.0 45.0 45.0 9 1.70000005 0.094 8 Mineralisation age Not classified 1447 ± 45 Ma (2s); K-feldspar (n=5), laumontite (n=3), albite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6699361 675695 12I9g
alder.2960 2960 KFM01C:73 Forsmark Hydrothermal vein or fracture filling K-feldspar-calcite vein Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 387.0 10.0 10.0 10.0 13 1.5 0.19 8 Mineralisation age Not classified 387 ± 10 Ma (2s); K-feldspar (n=5), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6699361 675695 12I9g
alder.2961 2961 KFM02B:171 Forsmark Hydrothermal vein or fracture filling Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1476.0 20.0 20.0 20.0 11 0.40000001 0.88 8 Mineralisation age Not classified 1476 ± 20 Ma (2s); K-feldspar (n=10), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6698544 677487 12I9g
alder.2962 2962 KFM04A:306 Forsmark Hydrothermal vein or fracture filling Open fracture with adularia, calcite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 355.0 12.0 12.0 12.0 5 0.41 0.91000003 8 Mineralisation age Not classified 355 ± 12 Ma (2s); K-feldspar (n=8), calcite (n=2); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6698741 675283 12I9g
alder.2963 2963 KFM04A:306 Forsmark Hydrothermal vein or fracture filling Open fracture with adularia, calcite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1429.0 18.0 18.0 18.0 5 1.39999998 0.23999999 8 Mineralisation age Not classified 1429 ± 18 Ma (2s); K-feldspar (n=4), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6698741 675283 12I9g
alder.2964 2964 KFM06C:391 Forsmark Hydrothermal vein or fracture filling Open fracture with adularia, calcite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 402.0 23.0 23.0 23.0 4 0.02 0.98000002 8 Mineralisation age Not classified 402 ± 23 Ma (2s); K-feldspar (n=3), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6699559 676738 12I9g
alder.2965 2965 KFM06C:391 Forsmark Hydrothermal vein or fracture filling Open fracture with adularia, calcite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1476.0 14.0 14.0 14.0 16 1.60000002 0.062 8 Mineralisation age Not classified 1476 ± 14 Ma (2s); K-feldspar (n=15), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6699559 676738 12I9g
alder.2966 2966 KFM15:15 Forsmark Hydrothermal vein or fracture filling Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1123.0 16.0 16.0 16.0 11 0.67000002 0.74000001 8 Mineralisation age Not classified 1123 ± 16 Ma (2s); illite (n=3), K-feldspar (n=4), albite (n=2), calcite (n=2); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6700309 675325 13I0g
alder.2967 2967 KFM24:399 Forsmark Hydrothermal vein or fracture filling Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1495.0 55.0 55.0 55.0 5 0.098 0.95999998 8 Mineralisation age Not classified 1495 ± 55 Ma (2s); K-feldspar (n=4), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6700309 675441 13I0g
alder.2968 2968 KA1755:151 Laxemar Mylonite Shear zone, muscovite-epidote-albite mylonite Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1430.0 12.0 12.0 12.0 8 1.03999996 0.40000001 8 Mineralisation age Not classified 1430 ± 12 Ma (2s); ms (n=7), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6366845 599666 6H3a
alder.2969 2969 KA1755:151 Laxemar Mylonite Shear zone, muscovite-epidote-albite mylonite Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1757.0 15.0 15.0 15.0 5 0.61000001 0.61000001 0 not known Not classified 1757 ± 15 Ma (2s); ms (n=3), albite (n=2); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6366845 599666 6H3a
alder.2970 2970 KLX01:220 Laxemar Hydrothermal vein or fracture filling Fracture filling with adularia zonations and calcite Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 677.0 11.0 11.0 11.0 7 0.60000002 0.69999999 8 Mineralisation age Not classified 677 ± 11 Ma (2s); K-feldspar (n=6), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6366460 598307 6G3j
alder.2971 2971 KLX01:220 Laxemar Hydrothermal vein or fracture filling Fracture filling with adularia zonations Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1436.0 18.0 18.0 18.0 12 0.31 0.98000002 8 Mineralisation age Not classified 1436 ± 18 Ma (2s); K-feldspar (n=11), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6366460 598307 6G3j
alder.2972 2972 KLX07A:357 Laxemar Hydrothermal vein or fracture filling Vein with K-feldspar-calcite Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 681.0 21.0 21.0 21.0 5 0.18000001 0.91000003 8 Mineralisation age Not classified 681 ± 21 Ma (2s); K-feldspar (n=4), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6365640 597489 6G3j
alder.2973 2973 KSH01A:600 Laxemar Hydrothermal vein or fracture filling Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 392.0 13.0 13.0 13.0 5 0.88999999 0.44999999 8 Mineralisation age Not classified 392 ± 13 Ma (2s); K-feldspar (n=4), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6364920 600674 6H3a
alder.2974 2974 KSH03A:186 Laxemar Hydrothermal vein or fracture filling Illite-rich fault filling Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 358.0 8.0 7.7 7.7 10 0.23999999 0.98000002 8 Mineralisation age Not classified 357.7 ± 7.7 Ma (2s); illite (n=9), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6364968 601027 6H3a
alder.2975 2975 KSH03A:186 Laxemar Hydrothermal vein or fracture filling Illite-rich fault filling Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 394.0 8.0 7.8 7.8 12 0.69 0.74000001 8 Mineralisation age Not classified 393.8 ± 7.8 Ma (2s); illite (n=11), epidote (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6364968 601027 6H3a
alder.2976 2976 KSH03A:197 Laxemar Hydrothermal vein or fracture filling Sealed vein with calcite-adularia Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 449.0 12.0 12.0 12.0 6 1.11000001 0.34999999 8 Mineralisation age Not classified 449 ± 12 Ma (2s); K-feldspar (n=3), calcite (n=3); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6364968 601027 6H3a
alder.2977 2977 KSH03A:225 Laxemar Hydrothermal vein or fracture filling Sealed vein with calcite-adularia Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 444.0 12.0 12.0 12.0 6 0.95999998 0.43000001 8 Mineralisation age Not classified 444 ± 12 Ma (2s); K-feldspar (n=4), calcite (n=2); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6364968 601027 6H3a
alder.2978 2978 CC1:539 Siljan Hydrothermal vein or fracture filling Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1447.0 50.0 50.0 50.0 7 0.44 0.81999999 8 Mineralisation age Not classified 1447 ± 50 Ma (2s); K-feldspar (n=6), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6762289 473412 14E2f
alder.2979 2979 CC1:539 Siljan Hydrothermal vein or fracture filling Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1680.0 43.0 43.0 43.0 6 1.5 0.2 8 Mineralisation age Not classified 1680 ± 43 Ma (2s); K-feldspar (n=3), calcite (n=3); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6762289 473412 14E2f
alder.2980 2980 Solb1:395 Siljan Hydrothermal vein or fracture filling Vein, K-feldspar-fluorite overgrow K-feldspar-albite Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1299.0 36.0 36.0 36.0 6 1.29999995 0.27000001 8 Mineralisation age Not classified 1299 ± 36 Ma (2s); K-feldspar (n=5), fl (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6761581 513595 14F2e
alder.2981 2981 Solb1:395 Siljan Hydrothermal vein or fracture filling Vein, K-feldspar-fluorite overgrow K-feldspar-albite Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1488.0 31.0 31.0 31.0 5 1.0 0.38999999 8 Mineralisation age Not classified 1488 ± 31 Ma (2s); K-feldspar (n=4), albite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6761581 513595 14F2e
alder.2982 2982 Solb1:436 Siljan Hydrothermal vein or fracture filling Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1433.0 30.0 30.0 30.0 7 0.99000001 0.41999999 8 Mineralisation age Not classified 1433 ± 30 Ma (2s); K-feldspar (n=5), harmotome (n=2); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6761581 513595 14F2e
alder.2983 2983 Solb1:436 Siljan Hydrothermal vein or fracture filling Vein with K-feldspar +/- calcite, albite Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1670.0 100.0 100.0 100.0 8 0.19 0.98000002 8 Mineralisation age Not classified 1670 ± 100 Ma (2s); K-feldspar (n=5), albite (n=3); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6761581 513595 14F2e
alder.2984 2984 VM2:333 Siljan Hydrothermal vein or fracture filling K-feldspar ± calcite ± illite vein Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 447.0 37.0 37.0 37.0 13 0.2 0.99800003 8 Mineralisation age Not classified 447 ± 37 Ma (2s); illite (n=12), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6760512 474669 14E2g
alder.2985 2985 VM2:642 Siljan Hydrothermal vein or fracture filling K-feldspar ± calcite ± illite vein Neoproterozoic and Phanerozoic platformal cover and igneous rocks Neoproterozoic and Phanerozoic platformal cover and igneous rocks Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 445.0 12.0 12.0 12.0 8 0.72000003 0.63 8 Mineralisation age Not classified 445 ± 12 Ma (2s); illite (n=4), K-feldspar (n=3), calcite (n=1); Rb decay constant Villa et al. 2015 Tillberg et al 2021 Tillberg, M., Drake, H., Zack, T., Hogmalm, J., Kooijman, E. and Åström, M. 2021. Reconstructing craton-scale tectonic events via in situ Rb-Sr geochronology of poly-phased vein mineralization. Terra Nova, 33, 502–510 https://doi.org/10.1111/ter.12542. 2021 xxx Aug 8, 2024, 11:00:46 AM fhm 1 6760512 474669 14E2g
alder.2986 2986 DZ4:-549 Forsmark Dh KFM08A Hydrothermal vein or fracture filling Fault with slickenfibre of albite and illite. Possible deformation zone in metagranite (6 fractures/m) Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1527.0 23.0 23.0 23.0 21 3.0 1 Metamorphic age Not classified Rb-Sr isochron 1527 ± 23 Ma (MSWD = 3.0); illite (n = 12) albite (n = 4) and calcite (n = 5); Rb decay constant Villa et al. 2015 Tillberg et al 2020 Tillberg, M., Drake, H., Zack, T., Kooijman, E., Whitehouse, M.J. & Åström, M.E., 2020: In situ Rb-Sr dating of slickenfibres in deep crystalline basement faults. Nature Scientific Reports 10, 562 https://doi.org/10.1038/s41598-019-57262-5 2020 xxx Aug 9, 2024, 10:55:12 AM fhm 1 6700320 675480 6700494 1631197 13I0g
alder.2987 2987 ZFM1203:-112 Forsmark Dh KFM07A Hydrothermal vein or fracture filling Growth zone of adularia, albite and calcite on slickensided fault surface. Gently dipping, WSW-striking deformation zone Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1438.0 33.0 33.0 33.0 17 1.01999998 1 Metamorphic age Not classified Rb-Sr isochron 1438 ± 33 Ma (MSWD = 1.02) ; adularia I (n = 12), albite (n = 3), calcite (n = 2); Rb decay constant Villa et al. 2015 Tillberg et al 2020 Tillberg, M., Drake, H., Zack, T., Kooijman, E., Whitehouse, M.J. & Åström, M.E., 2020: In situ Rb-Sr dating of slickenfibres in deep crystalline basement faults. Nature Scientific Reports 10, 562 https://doi.org/10.1038/s41598-019-57262-5 2020 xxx Aug 9, 2024, 10:55:12 AM fhm 1 6699951 675319 6700127 1631032 13I0g
alder.2988 2988 ZFM1203:-112 Forsmark Dh KFM07A Hydrothermal vein or fracture filling Growth zone of adularia, albite and calcite on slickensided fault surface. Gently dipping, WSW-striking deformation zone Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1074.0 74.0 74.0 74.0 4 0.81 1 Metamorphic age Not classified Rb-Sr isochron 1074 ± 74 Ma (MSWD = 0.81) ; adularia II (n = 3), calcite (n = 1); Rb decay constant Villa et al. 2015 Tillberg et al 2020 Tillberg, M., Drake, H., Zack, T., Kooijman, E., Whitehouse, M.J. & Åström, M.E., 2020: In situ Rb-Sr dating of slickenfibres in deep crystalline basement faults. Nature Scientific Reports 10, 562 https://doi.org/10.1038/s41598-019-57262-5 2020 xxx Aug 9, 2024, 10:55:12 AM fhm 1 6699951 675319 6700127 1631032 13I0g
alder.2989 2989 ZFMA2:-44 Forsmark Dh KFM01B Hydrothermal vein or fracture filling N-S-oriented fault in the deformation zone core with adularia, illite and calcite. Gently dipping, W-striking major deformation zone in strongly foliated metagranite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 399.0 5.0 5.0 5.0 32 1.39999998 1 Metamorphic age Not classified Rb-Sr isochron 398.6 ± 5.1 Ma (MSWD = 1.4) ; adularia (n = 22), illite (n = 7), calcite (n = 3); Rb decay constant Villa et al. 2015 Tillberg et al 2020 Tillberg, M., Drake, H., Zack, T., Kooijman, E., Whitehouse, M.J. & Åström, M.E., 2020: In situ Rb-Sr dating of slickenfibres in deep crystalline basement faults. Nature Scientific Reports 10, 562 https://doi.org/10.1038/s41598-019-57262-5 2020 xxx Aug 9, 2024, 10:55:12 AM fhm 1 6699368 675681 6699539 1631387 12I9g
alder.2990 2990 ZFMA2:-171 Forsmark Dh KFM04A Hydrothermal vein or fracture filling Gently dipping, open fractures with adularia and calcite occuring in gently dipping, W-striking major deformation zone in strongly foliated metagranite. Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 392.0 18.0 18.0 18.0 13 1.79999995 1 Metamorphic age Not classified Rb-Sr isochron 392 ± 18 Ma (MSWD = 1.8) ; adularia (n = 10), calcite (n = 3); Rb decay constant Villa et al. 2015 Tillberg et al 2020 Tillberg, M., Drake, H., Zack, T., Kooijman, E., Whitehouse, M.J. & Åström, M.E., 2020: In situ Rb-Sr dating of slickenfibres in deep crystalline basement faults. Nature Scientific Reports 10, 562 https://doi.org/10.1038/s41598-019-57262-5 2020 xxx Aug 9, 2024, 10:55:12 AM fhm 1 6698746 675281 6698922 1630979 12I9g
alder.2991 2991 DZ1:-122 Forsmark Dh KFM06C Hydrothermal vein or fracture filling Fault with calcite steps, illite, chlorite and hematite-stained adularia. Minor deformation zone with fractured and/or crushed rock in metagranite with pegmatite Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 349.0 9.0 9.0 9.0 17 1.89999998 1 Metamorphic age Not classified Rb-Sr isochron 348.9 ± 8.6 Ma (MSWD = 1.9) ; adularia (n = 5), illite (n = 11), calcite (n = 1); Rb decay constant Villa et al. 2015 Tillberg et al 2020 Tillberg, M., Drake, H., Zack, T., Kooijman, E., Whitehouse, M.J. & Åström, M.E., 2020: In situ Rb-Sr dating of slickenfibres in deep crystalline basement faults. Nature Scientific Reports 10, 562 https://doi.org/10.1038/s41598-019-57262-5 2020 xxx Aug 9, 2024, 10:55:12 AM fhm 1 6699582 676729 6699741 1632437 12I9g
alder.2992 2992 KLX06:565 Laxemar Dh KLX06 Greisen Fluorite-quartz-muscovite greisen Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1433.0 11.0 11.0 11.0 12 0.75999999 8 Mineralisation age Not classified Rb-Sr isochron 1432.6 ± 5.5 Ma (1s; MSWD = 0.76) ; muscovite (n = 6), fluorite (n = 3), calcite (n = 3); Rb decay constant Villa et al. 2015 Tillberg et al 2019 Tillberg, M., Maskenskaya, O.M., Drake, H., Hogmalm, J.K., Broman, C., Fallick, A.E. & Åström, M.E. 2019: Fractionation of Rare Earth Elements in Greisen and Hydrothermal Veins Related to A-Type Magmatism. Geofluids, 2019, 4523214, 1-20. https://doi.org/10.1155/2019/4523214 2019 xxx Aug 9, 2024, 11:01:28 AM fhm 1 6366753 596888 6367806 1548567 6G3j
alder.2993 2993 KLX06:572 Laxemar Dh KLX06 Greisen Fluorite-quartz-muscovite greisen Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1431.0 10.0 10.0 10.0 11 0.56999999 8 Mineralisation age Not classified Rb-Sr isochron 1430.5 ± 5.2 Ma(1s, MSWD = 0.57) ; muscovite (n = 8), fluorite (n = 3); Rb decay constant Villa et al. 2015 Tillberg et al 2019 Tillberg, M., Maskenskaya, O.M., Drake, H., Hogmalm, J.K., Broman, C., Fallick, A.E. & Åström, M.E. 2019: Fractionation of Rare Earth Elements in Greisen and Hydrothermal Veins Related to A-Type Magmatism. Geofluids, 2019, 4523214, 1-20. https://doi.org/10.1155/2019/4523214 2019 xxx Aug 9, 2024, 12:52:26 PM fhm 1 6366753 596888 6367806 1548567 6G3j
alder.2994 2994 KLX06:593 Laxemar Dh KLX06 Greisen Quartz-muscovite greisen Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1432.0 15.0 15.0 15.0 6 0.95999998 8 Mineralisation age Not classified Rb-Sr isochron 1432.2 ± 7.4 Ma (1s, MSWD = 0.96) ;(K-feldspar = 2), (biotite = 2), fluorite (n = 1), calcite (n = 1); Rb decay constant Villa et al. 2015 Tillberg et al 2019 Tillberg, M., Maskenskaya, O.M., Drake, H., Hogmalm, J.K., Broman, C., Fallick, A.E. & Åström, M.E. 2019: Fractionation of Rare Earth Elements in Greisen and Hydrothermal Veins Related to A-Type Magmatism. Geofluids, 2019, 4523214, 1-20. https://doi.org/10.1155/2019/4523214 2019 xxx Aug 9, 2024, 12:52:26 PM fhm 1 6366753 596888 6367806 1548567 6G3j
alder.2995 2995 KLX10:406 Laxemar Dh KLX10 Hydrothermal vein or fracture filling Vein (quartz, calcite, epidote, chlorite, and fluorite) Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1432.0 8.0 8.0 8.0 17 1.02999997 8 Mineralisation age Not classified Rb-Sr isochron 1431.7 ± 3.9 Ma (1s, MSWD = 1.03) ;biotite (n = 8), epidote (n = 2), calcite (n = 7); Rb decay constant Villa et al. 2015 Tillberg et al 2019 Tillberg, M., Maskenskaya, O.M., Drake, H., Hogmalm, J.K., Broman, C., Fallick, A.E. & Åström, M.E. 2019: Fractionation of Rare Earth Elements in Greisen and Hydrothermal Veins Related to A-Type Magmatism. Geofluids, 2019, 4523214, 1-20. https://doi.org/10.1155/2019/4523214 2019 xxx Aug 9, 2024, 12:52:26 PM fhm 1 6365266 596854 6366319 1548515 6G3j
alder.2996 2996 KLX10:895 Laxemar Dh KLX10 Hydrothermal vein or fracture filling Vein (quartz, calcite, epidote, chlorite, and fluorite) Svecokarelian Orogen Småland lithotectonic unit Stratigraphic position unknown Department of Earth Sciences, University of Gothenburg, Sweden 2 Rb-Sr Laser ICP-MS Multi mineral Isochron age 1432.0 15.0 15.0 15.0 9 0.92000002 8 Mineralisation age Not classified Rb-Sr isochron 1432.3 ± 7.5 Ma (1s, MSWD = 0.92) ;biotite (n = 7), calcite (n = 2); Rb decay constant Villa et al. 2015 Tillberg et al 2019 Tillberg, M., Maskenskaya, O.M., Drake, H., Hogmalm, J.K., Broman, C., Fallick, A.E. & Åström, M.E. 2019: Fractionation of Rare Earth Elements in Greisen and Hydrothermal Veins Related to A-Type Magmatism. Geofluids, 2019, 4523214, 1-20. https://doi.org/10.1155/2019/4523214 2019 xxx Aug 9, 2024, 12:52:26 PM fhm 1 6365266 596854 6366319 1548515 6G3j
alder.2997 2997 540025 Södra Hackspiksgruvan REE mineralisation REE-mineralisation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geospec Consultants Ltd., Edmonton, Canada 4 Re-Os N-TIMS Molybdenite Weighted average age 1842.0 4.0 4.0 4.0 2 8 Mineralisation age Not classified 2s age uncertainty. Decay constant used is 187 Re ?=1.666×10-11 a-1 Holtstam et al 2014 Holtstam, D., Andersson, U.B., Broman, C. & Mansfeld, J., 2014: Origin of REE mineralization in the Bastnäs-type Fe-REE-(Cu-Mo-Bi-Au) deposits, Bergslagen, Sweden. Mineralium Deposita 49, 933–966. https://doi.org/10.1007/s00126-014-0553-0 2014 xxx Nov 5, 2024, 3:14:42 PM fhm 1 6659914 552228 12G2b
alder.2998 2998 g1968 Bastnäs REE mineralisation REE-mineralisation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geospec Consultants Ltd., Edmonton, Canada 4 Re-Os N-TIMS Molybdenite Weighted average age 1863.0 4.0 4.0 4.0 2 8 Mineralisation age Not classified 2s age uncertainty. Decay constant used is 187 Re ?=1.666×10-11 a-1 Holtstam et al 2014 Holtstam, D., Andersson, U.B., Broman, C. & Mansfeld, J., 2014: Origin of REE mineralization in the Bastnäs-type Fe-REE-(Cu-Mo-Bi-Au) deposits, Bergslagen, Sweden. Mineralium Deposita 49, 933–966. https://doi.org/10.1007/s00126-014-0553-0 2014 xxx Nov 5, 2024, 3:23:24 PM fhm 1 6634462 532917 11F7h
alder.2999 2999 884305 Rödbergsgruvan Skarn iron ore REE-mineralisation associated with magnetite-actinolite skarn Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Geospec Consultants Ltd., Edmonton, Canada 4 Re-Os N-TIMS Molybdenite Weighted average age 1904.0 6.0 6.0 6.0 2 8 Mineralisation age Not classified 2s age uncertainty. Decay constant used is 187 Re ?=1.666×10-11 a-1 Holtstam et al 2014 Holtstam, D., Andersson, U.B., Broman, C. & Mansfeld, J., 2014: Origin of REE mineralization in the Bastnäs-type Fe-REE-(Cu-Mo-Bi-Au) deposits, Bergslagen, Sweden. Mineralium Deposita 49, 933–966. https://doi.org/10.1007/s00126-014-0553-0 2014 xxx Nov 5, 2024, 3:23:29 PM fhm 1 6596942 494070 10E9j
alder.3000 3000 BAST (18, 34, 34b, 33, 48) Bastnäs mine, six samples REE mineralisation REE-mineralisation, samples from the "Bastnäs mine" Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 1 U-Pb Laser ICP-MS Bastnäsite Weighted average 206Pb/238U age 1837.0 17.0 17.0 17.0 75 0.93000001 8 Mineralisation age Not classified Common 207Pb corrected 206Pb/238U weighted mean age is 1837 ± 17 Ma (2s, MSWD=0.93, n = 75). All samples yielded an intercept U-Pb age of 1831 ± 24 Ma (2s, n = 75, MSWD=1.5) Yang et al 2019 Yang, Y.-H., Wu, F.-Y., Li, Q.-L.; Rojas-Agramonte, Y., Yang, J.-H., Li, Y., Ma, Q., Xie, L.-W., Huang, C., Fan, H.-R., Zhao, Z.-F., Xu, C., 2019: In Situ U-Th-Pb Dating and Sr-Nd Isotope Analysis of Bastnäsite by LA-(MC)-ICP-MS. Geostandards and Geoanalytical Research, 43, 543–565. https://doi.org/10.1111/ggr.12297 2019 xxx Nov 6, 2024, 7:35:41 AM fhm 1 6634443 532912 11F7h
alder.3001 3001 BAST (18, 34, 34b, 33, 48) Bastnäs mine, six samples REE mineralisation REE-mineralisation, samples from the "Bastnäs mine" Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 3 Sm-Nd Laser ICP-MS Multi mineral Isochron age 1843.0 26.0 26.0 26.0 8 Mineralisation age Not classified Sm-Nd bastnäsite-apatite isochron age of 1843 ± 26 Ma, [143Nd/144Nd]i = 0.510340 ± 13 Yang et al 2019 Yang, Y.-H., Wu, F.-Y., Li, Q.-L.; Rojas-Agramonte, Y., Yang, J.-H., Li, Y., Ma, Q., Xie, L.-W., Huang, C., Fan, H.-R., Zhao, Z.-F., Xu, C., 2019: In Situ U-Th-Pb Dating and Sr-Nd Isotope Analysis of Bastnäsite by LA-(MC)-ICP-MS. Geostandards and Geoanalytical Research, 43, 543–565. https://doi.org/10.1111/ggr.12297 2019 xxx Nov 6, 2024, 8:28:29 AM fhm 1 6634443 532912 11F7h
alder.3002 3002 A007 Bastnäs, unspecified location REE mineralisation REE mineralisation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 1 U-Pb Laser ICP-MS Allanite Weighted average 206Pb/238U age 1866.0 11.0 11.0 11.0 21 0.1 8 Mineralisation age Not classified U-Pb data define a discordia with an intercept age of 1865 +/- 21 Ma (2s, MSWD = 0.11, n = 21, by anchoring to a 207Pb/206Pb ratio of 0.99 as estimated using the two stage crustal Pb model of Stacey and Kramers (1975). A weighted mean 206Pb/238U age is calculated at 1866 +/-11 Ma (2s, MSWD = 0.1, n = 21). Yang et al 2022 Yang; M., Yang; Y.-H., Kamo; S.L., Romer; R.L., Roberts, N.M.W., Wang; H., Xie; L.-W., Huang; C., Yang; J.-H., Wu, F.-Y., 2022: Natural Allanite Reference Materials for In Situ U-Th-Pb and Sm-Nd Isotopic Measurements by LA-(MC)-ICP-MS. Geostand Geoanal Res, 46: 169-203. https://doi.org/10.1111/ggr.12417 2022 xxx Nov 6, 2024, 9:08:44 AM fhm 1 6634456 532934 11F7h
alder.3003 3003 A007 Bastnäs, unspecified location REE mineralisation REE mineralisation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Jack Satterly Geochronology Lab, Dep.of Earth Sci., Univ. of Toronto, Canada & GFZ German Research Centre for Geosciences, Potsdam 1 U-Pb ID-TIMS Allanite Weighted average 206Pb/238U age 1852.0 5.0 5.0 5.0 10 10 0.20999999 8 Mineralisation age Not classified The results from two laboratories yield a weighted mean 207Pb/206Pb age of 1852 +/- 5 Ma (2s, MSWD = 0.21, n=10). Yang et al 2022 Yang; M., Yang; Y.-H., Kamo; S.L., Romer; R.L., Roberts, N.M.W., Wang; H., Xie; L.-W., Huang; C., Yang; J.-H., Wu, F.-Y., 2022: Natural Allanite Reference Materials for In Situ U-Th-Pb and Sm-Nd Isotopic Measurements by LA-(MC)-ICP-MS. Geostand Geoanal Res, 46: 169-203. https://doi.org/10.1111/ggr.12417 2022 xxx Nov 6, 2024, 4:28:27 PM fhm 1 6634456 532934 11F7h
alder.3004 3004 A007 Bastnäs, unspecified location REE mineralisation REE mineralisation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 3 Sm-Nd Laser ICP-MS Allanite Isochron age 1884.0 41.0 41.0 41.0 65 65 4.30000019 8 Mineralisation age Not classified All Sm-Nd data define an isochron age of 1884 +/- 41 Ma (2s, MSWD = 4.3, n = 65). Yang et al 2022 Yang; M., Yang; Y.-H., Kamo; S.L., Romer; R.L., Roberts, N.M.W., Wang; H., Xie; L.-W., Huang; C., Yang; J.-H., Wu, F.-Y., 2022: Natural Allanite Reference Materials for In Situ U-Th-Pb and Sm-Nd Isotopic Measurements by LA-(MC)-ICP-MS. Geostand Geoanal Res, 46: 169-203. https://doi.org/10.1111/ggr.12417 2022 xxx Nov 6, 2024, 5:15:09 PM fhm 1 6634456 532934 11F7h
alder.3005 3005 APLH0001A Högberget Granite Granite Svecokarelian Orogen Bergslagen lithotectonic unit Intrusive rock GP c. 1.83-1.75 Ga Department of Geology, Lund University 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1833.0 14.0 14.0 14.0 45 2 0.74000001 5 Magmatic age Not classified Zircon has elongated euhedral to subhedral prismatic shape with core- and rim domains and show internal oscillatory zoning in BSE. There are also elongated, ovoid, spherical to fragmental zircon. BSE-homogenous dark or with white and dark BSE patches.PbC-corrected data yields an upper intercept of 1778±22 Ma and a lower intercept age of 414±17 Ma (MSWD 10.2, n = 45). Two analyses are concordant and PbC-corrected data yields a weighted mean age of 1833±18 Ma (MSWD 0.74). Yang et al 2022 Yang; M., Yang; Y.-H., Kamo; S.L., Romer; R.L., Roberts, N.M.W., Wang; H., Xie; L.-W., Huang; C., Yang; J.-H., Wu, F.-Y., 2022: Natural Allanite Reference Materials for In Situ U-Th-Pb and Sm-Nd Isotopic Measurements by LA-(MC)-ICP-MS. Geostand Geoanal Res, 46: 169-203. https://doi.org/10.1111/ggr.12417 2022 xxx Nov 7, 2024, 8:40:43 AM fhm 1 6647325 499942 11F9a
alder.3006 3006 APLW1A; APLW1A1; 8B1 Wigström tungsten skarn deposit Tungsten mineralisation Skarnhosted tungsten mineralisation Svecokarelian Orogen Bergslagen lithotectonic unit Stratigraphic position unknown Department of Geology, Lund University 1 U-Pb Laser ICP-MS Zircon Weighted average 207Pb/206Pb age 1795.0 20.0 20.0 20.0 31 4 2.0 8 Mineralisation age Not classified Skarnhosted zircons in sample are complex with variations in size, morphology and internal textures.They typically lack distinct prismatic shape and range from anhedral to subhedral with irregular, oblong, ovoid, rectangular to skeletal morphologies. The four oldest upper intercept concordant analyses give a wtd. 207Pb/206Pb mean age of 1795±20 Ma (MSWD = 2.0) for common Pb uncorrected data and 1784±10 Ma (MSWD = 0.62) for PbC corrected data. The uncorrected age was favoured as PbC corrections could lead to analytical overcompensation in this case with relatively low common Pb signatures of the zircons. In total there are 31 analyses of which seven respectively six analyses are concordant in uncorrected respectively corrected data. Plan 2020 Plan, A., 2020: Resolving temporal links between the Högberget granite and the Wigström tungsten skarn deposit in Bergslagen (Sweden) using trace elements and U-Pb LA-ICPMS on complex zircons. Master’s thesis, no 580, dissertations in Geology at Lund University, 58 pp. https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=9000072&fileOId=9000110 2020 xxx Nov 7, 2024, 8:51:38 AM fhm 1 6648087 499465 12F0a
alder.3007 3007 STB220030A n6607 Norrmalm Rhyolite Metarhyolite with grantic veins. Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1873.0 6.0 6.0 6.0 10 2 5 Magmatic age Not classified Most zircons in the sample are metamict and recorded ages between c 1.87 and 1.80 Ga. The oldest ages are from two concordant analyses in a single, less metamict crystal with a concordia age of 1873±6 Ma, and a weighted 207Pb/206Pb mean age of 1864±3 Ma (MSWD 1,1). This age is suggested to possibly represent the igneous crystallisation age of the rhyolite, whereas younger ages may result from a later metamorphic event. More and better analyses are needed to better constrain and evaluate the ages. Ripa et al 2024a Ripa, M., Bergman, S. & Casey, P., 2024: Malmförutsättningar i norra delen av Bergslagens litotektoniska enhet. Sveriges geologiska undersökning SGU-rapport 2024:01, 35 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202401rapport/s2401-rapport.pdf 2024 xxx Nov 11, 2024, 8:01:20 AM fhm 1 6765668 554945 14G3C
alder.3008 3008 ALB210029A n6612 Grindstugan, Ställdalen Rhyolite Metarhyolite, quartz-feldspar porhyric, layered (rhyolitic tuff). Svecokarelian Orogen Bergslagen lithotectonic unit Supracrustal rock c. 1.96-1.86 Ga (Svecofennian) Nordsim, Swedish Museum of Natural History, Stockholm 1 U-Pb SIMS Zircon Concordant age 1892.0 4.0 4.0 4.0 12 7 3.5 5 Magmatic age Not classified Euhedral, prismatic zircon with strong zonation. Five analyses was excluded from age calculation due to high values of common lead or discordance. Remanining seven analyses give a concordia age of 1891,9 ± 3,7 Ma (MSWD = 3,5) and a 207Pb/206Pb weighted age of 1893 ± 2 Ma (MSWD = 7). Ripa et al 2024b Ripa, M., Andersson, S., Brolin, C. & Casey, P., 2024: Malmnära profilkartering i området Ställdalen–Kopparberg under 2021–2022. Sveriges geologiska undersökning SGU-rapport 2024:07, 53 s. https://resource.sgu.se/dokument/publikation/sgurapport/sgurapport202407rapport/s2407_rapport.pdf 2024 xxx Nov 7, 2024, 1:02:09 PM fhm 1 6642600 494636 11E8j