FIRST DETAILED RECORD δ13 Corg. IN PERMIAN MUDSTONES OF THE TASKAN BASIN (OMULEVKA BLOCK): A REFLECTION OF BIOSPHERIC EVENTS IN NORTHEAST ASIA

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Resumo

For the first time, a detailed record of the δ13Сorg value has been obtained in Permian mudstones of the Taskan Basin (Omulevka block, Northeast Asia), covering the interval from the Upper Kungurian, Roadian, Wordian, Capitanian, and Lower Wuchiapingian stages. The value of δ13 Corg. varies from –23.81‰ (middle Kungurian) to –26.97‰ (lower part of the Wuchiapingian). Three negative excursions of the δ13 Corg. value are clearly distinguished in the section – in the upper part of the Kungurian Stage of the Lower Permian, in the lower part of the Capitanian and at the boundary of the Capitanian – Wuchiapingian stages. These excursions are in good agreement with the episodes of mass extinctions established by us earlier (Biakov, 2012) and are most likely associated with periods of activity of island-arc magmatism in the region during the Permian.

Sobre autores

A. Biakov

N.A. Shilo North-East Interdisciplinary Scientific Research Institute, Far East Branch, Russian Academy of Sciences

Autor responsável pela correspondência
Email: abiakov@mail.ru
Russian, Magadan

I. Vedernikov

N.A. Shilo North-East Interdisciplinary Scientific Research Institute, Far East Branch, Russian Academy of Sciences

Email: abiakov@mail.ru
Russian, Magadan

N. Goryachev

N.A. Shilo North-East Interdisciplinary Scientific Research Institute, Far East Branch, Russian Academy of Sciences

Email: abiakov@mail.ru
Russian, Magadan

B. Gareev

Kazan Federal University

Email: abiakov@mail.ru
Russian, Kazan

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Declaração de direitos autorais © А.С. Бяков, И.Л. Ведерников, Н.А. Горячев, Б.И. Гареев, 2023

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