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Maastrichtian-Paleocene floras of Northeastern Russia and north Alaska and floral changes at the Cretaceous-Paleogene boundary

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Author

Summary, in English

Taphofloras of the Koryak Upland and the Sagwon Locality of North Alaska are described in terms of their taxonomic composition, stratigraphic ranges, and comparison with coeval floras of Northeastern Russia and Alaska. Causes and amplitude of changes in Arctic floras across the Cretaceous-Paleogene boundary are considered. In its aspect and taxonomic composition, the Late Maastrichtian flora of the Amaam Lagoon (the Koryak Upland) is very close to the early Paleocene Sagwon flora of North Alaska. This is inconsistent with a hypothesis of the global ecological crisis at the Cretaceous-Paleogene boundary. Development of floras was controlled by long-term climatic fluctuations and by evolution and migration of plants.

Department/s

Publishing year

2004

Language

English

Pages

485-494

Publication/Series

Stratigraphy and Geological Correlation

Volume

12

Issue

5

Document type

Journal article

Publisher

Interperiodica

Topic

  • Geotechnical Engineering

Keywords

  • Cretaceous-Paleogene boundary
  • paleobotany
  • Northeastern Russia
  • America
  • North

Status

Published

ISBN/ISSN/Other

  • ISSN: 0869-5938