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Isotopic age of the Permian-Triassic basaltic magmatism in the Polar Cis-Urals: Rb-Sr and Sm-Nd data |
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| Authors: | V L Andreichev Yu L Ronkin O P Lepikhina A F Litvinenko |
| Institution: | (1) Institute of Geology, Komi Scientific Center, Uralian Division, Russian Academy of Sciences, Syktyvkar, Russia;(2) A.N. Zavaritskii Institute of Geology and Geochemistry, Uralian Division, Russian Academy of Sciences, Yekaterinburg, Russia |
| Abstract: | Two basaltic lava flows are confined to the Permian-Triassic boundary in succession of continental deposits of the Polar Cis-Urals that is confirmed by Rb-Sr (250 ± 15 Ma) and Sm-Nd (249 ± 17 Ma) dates obtained for the lower flow in the Paemboi-Khalmer-Yu area of the Korotaikha depression. The analyzed basalts are correlative in age with Siberian plateau basalts (250 Ma) and the Permian-Triassic boundary dated at 251 Ma in the Meishan section of marine deposits in South China. |
| Keywords: | basalts Polar Cis-Urals Permian-Triassic boundary isotopic age |
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