Biostratigraphy and Paleogeography of the Bazhenovo Formation (Upper Jurassic and Lower Cretaceous) Based on Radiolarians, Nannoplankton and Calcareous Dinocysts
- Authors: Vishnevskaya V.S.1, Ovechkina M.N.2,3, Ustinova M.A.1
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Affiliations:
- Geological Institute, Russian Academy of Sciences
- Geological Survey of Israel
- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal
- Issue: Vol 53, No 9 (2019)
- Pages: 916-921
- Section: Article
- URL: https://journals.rcsi.science/0031-0301/article/view/168956
- DOI: https://doi.org/10.1134/S003103011909017X
- ID: 168956
Cite item
Abstract
New data on the taxonomic diversity of radiolarians, calcareous dinocysts and nannoplankton associations in the Late Jurassic and Early Cretaceous of the Bazhenovo Formation of Western Siberia are presented. Analysis of the distribution of radiolarians in the Bazhenovo Formation confirms the possibility of its division into five biostratigraphic units. The upper part of the Bazhenovo Formation, according to the calcareous dinocysts, includes five biostratigraphic units at the rank of beds with microfauna. The presence of the genus Parvicingula confirms that the Bazhenov Sea was a marginal marine basin connected with the Paleo-Pacific Ocean.
Keywords
About the authors
V. S. Vishnevskaya
Geological Institute, Russian Academy of Sciences
Author for correspondence.
Email: valentina.vishnaa@mail.ru
Russian Federation, Moscow, 119017
M. N. Ovechkina
Geological Survey of Israel; School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal
Author for correspondence.
Email: saccammina@gmail.com
Israel, Jerusalem; Durban
M. A. Ustinova
Geological Institute, Russian Academy of Sciences
Author for correspondence.
Email: ustinova_masha@mail.ru
Russian Federation, Moscow, 119017