id:"swepub:oai:DiVA.org:ltu-3483"
Sökning: id:"swepub:oai:DiVA.org:ltu-3483" > Time constraints on...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 05022naa a2200529 4500 | |
| 001 | oai:DiVA.org:ltu-3483 | |
| 003 | SwePub | |
| 008 | 160929s2016 | |||||||||||000 ||eng| | |
| 009 | oai:DiVA.org:uu-297775 | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-34832 URI |
| 024 | 7 | a https://doi.org/10.1016/j.precamres.2016.03.0112 DOI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2977752 URI |
| 040 | a (SwePub)ltud (SwePub)uu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Kampmann, Tobiasu Luleå tekniska universitet,Geovetenskap och miljöteknik,Lulea Univ Technol, Dept Civil Environm & Nat Resources Engn, Div Geosci, SE-97187 Lulea, Sweden.4 aut0 (Swepub:ltu)tobkam |
| 245 | 1 0 | a Time constraints on magmatism, mineralisation and metamorphism at the Falun base metal sulphide deposit, Sweden, using U-Pb geochronology on zircon and monazite |
| 264 | 1 | b Elsevier,c 2016 |
| 338 | a electronic2 rdacarrier | |
| 500 | a Validerad; 2016; Nivå 2; 20151014 (tobkam) | |
| 520 | a U–Th–Pb (zircon and monazite) ion probe data have provided constraints on the timing of emplacement and metamorphism of magmatic rocks close to the Palaeoproterozoic, Falun base metal sulphide deposit in the Bergslagen lithotectonic unit, Fennoscandian Shield, Sweden, and, thereby the timing of mineralisation. Hydrothermal alteration and mineralisation at Falun are constrained to a short interval of several million years between a 207Pb/206Pb weighted average age of 1894 ± 3 Ma for a rhyolitic sub-volcanic rock in the felsic volcanic to sub-volcanic host rock suite, and a 207Pb/206Pb weighted average age of 1891 ± 3 Ma for a post-sulphide, porphyritic dacite dyke. Magmatism also included the emplacement of granite plutons with igneous crystallization ages of 1894 ± 3, 1894 ± 2 Ma and 1893 ± 3 Ma. The felsicsub-volcanic to volcanic activity and the emplacement of dacite dykes and granite plutons overlap in age within their respective analytical uncertainties, indicating hydrothermal alteration and sulphide mineralisation inside a narrow time span of intense magmatic activity, and burial of the supracrustal rocks.Two distinct patchy and homogeneous metamorphic monazite types in a felsic volcanic rock around and hydrothermally altered rocks at the Falun deposit yield 207Pb/206Pb weighted average ages of 1831 ± 8 Ma and 1822 ± 5 Ma, respectively. These ages fall well within the temporal range of a younger1.84–1.81 Ga (M2) metamorphic episode during the 2.0–1.8 Ga Svecokarelian orogeny, with the older episode (M1) inside the Bergslagen lithotectonic unit at around 1.86 Ga. This shows the major influence of the M2 event in the north-western part of this unit, leading to a complete resetting of the U–Th–Pb isotopesystem in monazite. | |
| 650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geologi0 (SwePub)105042 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geology0 (SwePub)105042 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Geovetenskap och miljövetenskapx Multidisciplinär geovetenskap0 (SwePub)105032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geosciences, Multidisciplinary0 (SwePub)105032 hsv//eng |
| 653 | a Falun deposit | |
| 653 | a Fennoscandian Shield | |
| 653 | a SIMS U–Pb geochronology | |
| 653 | a Zircon | |
| 653 | a Monazite | |
| 653 | a Svecokarelian orogeny | |
| 653 | a Ore Geology | |
| 653 | a Malmgeologi | |
| 700 | 1 | a Stephens, Michaelu Luleå tekniska universitet,Geovetenskap och miljöteknik,Sveriges Geologiska Undersökning,Lulea Univ Technol, Dept Civil Environm & Nat Resources Engn, Div Geosci, SE-97187 Lulea, Sweden.;Geol Survey Sweden, Box 670, SE-75128 Uppsala, Sweden.4 aut0 (Swepub:ltu)micste |
| 700 | 1 | a Ripa, Magnusu Sveriges Geologiska Undersökning,Geol Survey Sweden, Box 670, SE-75128 Uppsala, Sweden.4 aut |
| 700 | 1 | a Hellström, Fredriku Sveriges Geologiska Undersökning,Geol Survey Sweden, Box 670, SE-75128 Uppsala, Sweden.4 aut |
| 700 | 1 | a Majka, Jaroslawu Uppsala universitet,Mineralogi, petrologi och tektonik,AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Al Mickiewicza 30, PL-30059 Krakow, Poland.4 aut0 (Swepub:uu)jarma730 |
| 710 | 2 | a Luleå tekniska universitetb Geovetenskap och miljöteknik4 org |
| 773 | 0 | t Precambrian Researchd : Elsevierg 278, s. 52-68q 278<52-68x 0301-9268x 1872-7433 |
| 856 | 4 | u https://doi.org/10.1016/j.precamres.2016.03.011y Fulltext |
| 856 | 4 | u https://ltu.diva-portal.org/smash/get/diva2:976341/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print |
| 856 | 4 | u http://ltu.diva-portal.org/smash/get/diva2:976341/FULLTEXT01 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-3483 |
| 856 | 4 8 | u https://doi.org/10.1016/j.precamres.2016.03.011 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-297775 |
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