Palynostratigraphy of the Upper Cretaceous and Paleogene Deposits in the South of Western Siberia by Example of Russkaya Polyana Boreholes, Omsk Trough
- Authors: Lebedeva N.K.1,2, Kuz’mina O.B.1
-
Affiliations:
- Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
- Novosibirsk State University
- Issue: Vol 26, No 1 (2018)
- Pages: 80-108
- Section: Article
- URL: https://ogarev-online.ru/0869-5938/article/view/177871
- DOI: https://doi.org/10.1134/S0869593818010069
- ID: 177871
Cite item
Abstract
The detailed study of Boreholes 8, 10, and 2 in the Russkaya Polyana district (Omsk Trough) made it possible to reveal the complex structure of the Upper Cretaceous sediments formed in unstable conditions of the marginal part of the Western Siberian basin. The Pokur, Kuznetsovo, Ipatovo, Slavgorod, and Gan’kino formations were subjected to palynological analysis and substantiation of their Late Cretaceous age. Eight biostratigraphic units with dinocysts and five units with spores and pollen from the Albian to the Maastrichtian were identified. The joint application of biostratigraphic and magnetostratigraphic methods made it possible to reveal the stratigraphic breaks in the studied sedimentary stratum and to estimate their scope. The age of the Lower Lyulinvor Subformation was specified in the marginal part of the Omsk Trough. The ingression traces of the Western Siberian basin in the Albian were found for the first time in the considered region.
About the authors
N. K. Lebedeva
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch; Novosibirsk State University
Author for correspondence.
Email: LebedevaNK@ipgg.sbras.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090
O. B. Kuz’mina
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch
Email: LebedevaNK@ipgg.sbras.ru
Russian Federation, Novosibirsk, 630090
Supplementary files
