Sr isotope composition in belemnites from the Jurassic–Cretaceous boundary section (Maurynya River, Western Siberia)


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The belemnite Sr isotope characteristics obtained over an interval from the Upper Volgian Regional Substage to the lower part of the Ryazanian Regional Stage in the section on the Maurynya River (Western Siberia) fills a gap in the 87Sr/86Sr ocean water variation curve over the Jurassic–Cretaceous boundary. The increase in the 87Sr/86Sr values from 0.707172 to 0.707242 revealed in the section coincides with a general rise in this ratio in the Late Jurassic–Early Cretaceous ocean.

Sobre autores

A. Kuznetsov

Institute of Precambrian Geology and Geochronology

Autor responsável pela correspondência
Email: antonbor9@mail.ru
Rússia, St. Petersburg, 199034

O. Izokh

Institute of Geology and Mineralogy, Siberian Branch

Email: antonbor9@mail.ru
Rússia, Novosibirsk, 630090

O. Dzyuba

Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch

Email: antonbor9@mail.ru
Rússia, Novosibirsk, 630090

B. Shurygin

Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch

Email: antonbor9@mail.ru
Rússia, Novosibirsk, 630090

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