Stratigraphy and Geological Correlation

, Volume 18, Issue 6, pp 635–659 | Cite as

Comparative analysis of marine paleogene sections and biota from West Siberia and the Arctic Region

  • M. A. Akhmet’ev
  • N. I. Zaporozhets
  • A. I. Iakovleva
  • G. N. Aleksandrova
  • V. N. Beniamovsky
  • T. V. Oreshkina
  • Z. N. Gnibidenko
  • Zh. A. Dolya
This Issue is Dedicated to the 80th Jubilee of the Geological Institute, Russian Academy of Sciences

Abstract

The analysis of the main biospheric events that took place in West Siberia and the Arctic region during the Early Paleogene revealed the paleogeographic and paleobiogeographic unity of marine sedimentation basins and close biogeographic relations between their separate parts. Most biotic and abiotic events of the first half of the Paleogene in the Arctic region and West Siberia were synchronous, unidirectional, and interrelated. Shelf settings, sedimentation breaks, and microfaunal assemblages characteristic of these basins during the Paleogene are compared. The comparative analysis primarily concerned events of the Paleocene-Eocene thermal maximum (PETM) and beds with Azolla (aquatic fern). The formation of the Eocene Azolla Beds in the Arctic region and West Siberia was asynchronous, although it proceeded in line with a common scenario related to the development of a system of estuarine-type currents in a sea basin partly isolated from the World Ocean.

Keywords

stratigraphy Paleogene Eocene Oligocene dinocysts diatom algae radiolarians foraminifers Azolla Beds 

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© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • M. A. Akhmet’ev
    • 1
  • N. I. Zaporozhets
    • 1
  • A. I. Iakovleva
    • 1
  • G. N. Aleksandrova
    • 1
  • V. N. Beniamovsky
    • 1
  • T. V. Oreshkina
    • 1
  • Z. N. Gnibidenko
    • 2
  • Zh. A. Dolya
    • 3
  1. 1.Geological InstituteRussian Academy of SciencesMoscowRussia
  2. 2.Institute of Petroleum Geology and Geophysics, Siberian DivisionRussian Academy of SciencesNovosibirskRussia
  3. 3.Open Joint-Stock Company Omsk Geological-Prospecting ExpeditionOmskRussia

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