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Geochronological co...
Geochronological constraints on Caledonian strike-slip displacement in Svalbard, with implications for the evolution of the Arctic
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- Faehnrich, Karol (författare)
- Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA.;AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Krakow, Poland.
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- Majka, Jaroslaw (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik,AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Krakow, Poland.
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- Schneider, David (författare)
- Univ Ottawa, Dept Earth & Environm Sci, Ottawa, ON, Canada.
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- Mazur, Stanislaw (författare)
- Polish Acad Sci, Inst Geol Sci, Krakow, Poland.
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- Manecki, Maciej (författare)
- AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Krakow, Poland.
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- Ziemniak, Grzegorz (författare)
- AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Krakow, Poland.
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- Wala, Virginia T. (författare)
- Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA.
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- Strauss, Justin V. (författare)
- Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA.
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Dartmouth Coll, Dept Earth Sci, Hanover, NH 03755 USA;AGH Univ Sci & Technol, Fac Geol Geophys & Environm Protect, Krakow, Poland. Mineralogi, petrologi och tektonik (creator_code:org_t)
- 2020-04-20
- 2020
- Engelska.
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Ingår i: Terra Nova. - : Wiley. - 0954-4879 .- 1365-3121. ; 32:4, s. 290-299
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The timing of Svalbard's assembly in relation to the mid-Paleozoic Caledonian collision between Baltica and Laurentia remains contentious. The Svalbard archipelago consists of three basement provinces bounded by N-S-trending strike-slip faults whose displacement histories are poorly understood. Here, we report microstructural and mineral chemistry data integrated with Ar-40/Ar-39 muscovite geochronology from the sinistral Vimsodden-Kosibapasset Shear Zone (VKSZ, southwest Svalbard) and explore its relationship to adjacent structures and regional deformation within the circum-Arctic. Our results indicate that strike-slip displacement along the VKSZ occurred in late Silurian-Early Devonian and was contemporaneous with the beginning of the main phase of continental collision in Greenland and Scandinavia and the onset of syn-orogenic sedimentation in Silurian-Devonian fault-controlled basins in northern Svalbard. These new-age constraints highlight possible links between escape tectonics in the Caledonian orogen and mid-Paleozoic terrane transfer across the northern margin of Laurentia.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
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- art (ämneskategori)
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