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FORAMINIFERA ASSEMBLAGES AND ALBIAN BIOSTRATIGRAPHY OF WEST SIBERIA (YAMAL PENINSULA)

V. M. Podobina

Tomsk State University, Tomsk, Russia

New data on Albian foraminifera assemblages were obtained from recently drilled well columns of the Yamal Peninsula. The author refers this territory to the northern paleobiogeographical district, the southern boundary of which is drawn along the latitudinal Ob River stream. The most diverse Albian foraminifera assemblages were found in the well column 50 at the Malyginskaya area, as well as in columns of well 124 of the West-Tambeyskaya and the wells 201, 205 of the North-Tambeyskaya areas. Slightly similar Albian foraminifera assemblages have earlier been studied by the author from 10 columns at the Samotlorskaya area in the Shirotnoye Priobye (Latitudinal Ob River Region). The most changeless and diverse in species is the middle Albian assemblage. It was revealed not only in the columns of the Yamal Peninsula, but also in more south previously studied areas.

Keywords: foraminifera, biostratigraphy, Albian, West Siberia.

DOI 10.20403/2078-0575-2018-1-24-31