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UPPER JURASSIC FORAMINIFERA IN THE SOUTHERN WEST SIBERIA (SILGA FACIES REGION)

E. V. Zaichikova

Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia

The paper deals with the presented results of the foraminifera study from Upper Jurassic sections of the Silga facies region. An almost complete continuous sequence of biostratons isolated from the Middle Oxfordian – Early Volgian foraminifera of southern West Siberia was established. Based on the biofacial analysis, the conclusion was made that the given territory belongs to the zone of relative shallow water during the specified time period.

Keywords: foraminifera, biostratigraphy, Jurassic System, Oxfordian Stage, Kimmeridgian Stage, Volgian Stage, West Siberia, biofacies.

DOI 10.20403/2078-0575-2024-4b-32-39

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