Comparative analysis of marine paleogene sections and biota from West Siberia and the Arctic Region |
| |
Authors: | 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 |
| |
Institution: | 1.Geological Institute,Russian Academy of Sciences,Moscow,Russia;2.Institute of Petroleum Geology and Geophysics, Siberian Division,Russian Academy of Sciences,Novosibirsk,Russia;3.Open Joint-Stock Company Omsk Geological-Prospecting Expedition,Omsk,Russia |
| |
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: | |
本文献已被 SpringerLink 等数据库收录! |
|