Geochronological constraints on Caledonian strike–slip displacement in Svalbard, with implications for the evolution of the Arctic
Geochronological constraints on Caledonian strike–slip displacement in Svalbard, with implications for the evolution of the Arctic
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斯瓦尔巴群岛加里东走滑位移的年代学限制,对北极演化的影响
DOI:
10.1111/ter.12461
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发表时间:
2020
期刊:
影响因子:
2.4
通讯作者:
Strauss, Justin V.
中科院分区:
文献类型:
--
作者:
Faehnrich, Karol;Majka, Jarosław;Schneider, David;Mazur, Stanisław;Manecki, Maciej;Ziemniak, Grzegorz;Wala, Virginia T.;Strauss, Justin V.
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 with40Ar/39Ar 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.
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影响因子:
2.7
作者:
A. Mulch;M. Cosca
通讯作者:
A. Mulch;M. Cosca
影响因子:
1.4
作者:
J. Majka;Karolina Kośmińska;S. Mazur;J. Czerny;K. Piepjohn;M. Dwornik;M. Manecki
通讯作者:
M. Manecki
影响因子:
2.3
作者:
K. Michalski;M. Lewandowski;G. Manby
通讯作者:
G. Manby
影响因子:
2.3
作者:
J. Majka;S. Mazur;M. Manecki;J. Czerny;D. Holm
通讯作者:
J. Majka;S. Mazur;M. Manecki;J. Czerny;D. Holm
影响因子:
2.7
作者:
K. Michalski;G. Manby;K. Nejbert;J. Domańska;M. Burzyński
通讯作者:
M. Burzyński