Sr chemostratigraphy of carbonate sedimentary cover of the Tuva-Mongolian microcontinent |
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| Authors: | A B Kuznetsov E F Letnikova I A Vishnevskaya G V Konstantinova E P Kutyavin N K Geletii |
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| Institution: | (1) Wadia Institute of Himalayan Geology, Dehradun, 248001, Uttarakhand, India |
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| Abstract: | This study uses Sr isotope chemostratigraphy to place constraints on the depositional age of carbonate rocks from the Tuva-Mongolian
microcontinent. The age of carbonate rocks of the Irkut Formation (87Sr/86Sr initial ratio equal to 0.70480–0.70485) is determined to be older than 1250 Ma, whereas carbonates of the Zabit (0.70706–0.70727
and 0.70828–0.70848) and Agarin Gol (0.70725–0.70743) formations were deposited in the interval 630–560 Ma. |
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