Paleontological and magnetostratigraphic data on Upper Cretaceous deposits from borehole no. 8 (Russkaya Polyana District, Southwestern Siberia)
- 1 January 2013
- journal article
- Published by Pleiades Publishing Ltd in Stratigraphy and Geological Correlation
- Vol. 21 (1), 48-78
- https://doi.org/10.1134/s086959381301005x
Abstract
This work presents results of complex research (palynological, macro- and microfaunistic, and paleomagnetic) of Upper Cretaceous deposits, opened by borehole no. 8 in the Russkaya Polyana District (the southern margin of the Omsk Depression, Southwestern Siberia). The paleontological data obtained allowed us to establish the age of deposits. Based on dinocysts, nannoplankton and spore-pollen complexes, the section of borehole no. 8 has been divided into Pokur, Kuznetsovo, Ipatovo, Slavgorod, and Gan’kino Formations. This work gives data on the composition of zonal palynomorphs, nannoplankton, and microfaunistic complexes. Based on the complex data obtained, the magnetostratigraphic section of Upper Cretaceous deposits has been developed. The section consists of three magnetozones: normal and two reversed polarity magnetozones. The Pokur, Kuznetsovo and Ipatovo Formation (Cenomanian-Santonian) belong to the long normal polarity magnetozone; the Slavgorod and Gan’kino Formations (Campanian-Maastrichtian), separated by a stratigraphic break, belong to reversed polarity magnetozones. The magnetostratigraphic section has been correlated with the general magnetostratigraphic and magnetochronological time scales.Keywords
This publication has 15 references indexed in Scilit:
- Problems of Paleogene stratigraphy and paleogeography in the middle latitudes of EurasiaRussian Geology and Geophysics, 2011
- Comparative analysis of marine paleogene sections and biota from West Siberia and the Arctic RegionStratigraphy and Geological Correlation, 2010
- Eocene dinoflagellate cyst biostratigraphy of research borehole 011-BP, Omsk Region, southwestern SiberiaPalynology, 2010
- Stratigraphy and sedimentary environments for cretaceous deposits in the southern part of the Var’egansk Megabar (Western Siberia)Stratigraphy and Geological Correlation, 2010
- On the Geologic Time Scale 2008Newsletters on Stratigraphy, 2008
- A Geological Time Scale 2004Published by Natural Resources Canada/CMSS/Information Management ,2004
- Upper CretaceousPublished by Springer Science and Business Media LLC ,1998
- TechniquesPublished by Springer Science and Business Media LLC ,1998
- A Triassic, Jurassic and Cretaceous Time ScalePublished by Society for Sedimentary Geology ,1995
- A new geomagnetic polarity time scale for the Late Cretaceous and CenozoicJournal of Geophysical Research: Solid Earth, 1992