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INFLUENCE OF TECTONIC MOVEMENTS ON THE STRATIGRAPHY OF THE PALEOCENE OF WESTERN SIBERIA (BASED ON FORAMINIFERS)

V. M. Podobina

Nationl Research Tomsk State University, Tomsk, Russia

Toward the end of the Maastrichtian stage in Western Siberia, under the influence of tectonic movements, the direction of transgression changed from southern to northern. This led to a slight change in the lithological composition already in the uppermost layers of the Gankinskaya suite (horizon). A opoka-like sediments appears in the suite and the calcareous material disappears. As a result of tectonic movements, only the lowest layers of the Danish layer (Lower Paleocene) were preserved from erosion in the relief depressions (Trans-Urals, Omsk Depression, meridian flow of the Vasyugan River). The overlying deposits consist of dark gray plastic un clays of the Talitsky Formation of the Zeelandian Stage (Middle Paleocene).

Keywords: tectonic movements, Paleocene, foraminifera, Western Siberia.

DOI 10.20403/2078-0575-2020-2-12-25