期刊
RUSSIAN GEOLOGY AND GEOPHYSICS
卷 54, 期 3, 页码 335-348出版社
RUSSIAN ACAD SCIENCES, SIBERIAN BRANCH, VS SOBOLEV INST GEOL & MINEROL
DOI: 10.1016/j.rgg.2013.02.008
关键词
Jurassic-Cretaceous boundary; Northern Siberia; magnetostratigraphy; ammonites; belemnites; buchias; Tethyan-Boreal correlation
资金
- Russian Foundation for Basic Research [12-05-00453]
- Presidium of the Russian Academy of Sciences [28]
The results of this study were used to identify a reversed polarity magnetozone, referred to as M17r, in Berriasian sections of the Nordvik Peninsula (northern East Siberia) within the normal polarity magnetozone (M18n) from previous studies. The new magnetozone embraces the Volgian-Ryazanian boundary (Chetaites chetae/C. sibiricus zonal boundary). It was also found that the former magnetozone M17r at Nordvik, which includes the C. sibiricus/Hectoroceras kochi zonal boundary should correspond to magnetozone M16r. Using magnetostratigraphic and biostratigraphic criteria proves that the Boreal C. sibiricus Zone is correlated with at least the major part of the Tethyan Tirnovella occitanica Zone, and the Boreal H. kochi Zone is correlated with the lower part of the Malbosiceras paramimounum Subzone of the Tethyan Fauriella boissieri Zone. (c) 2013, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.
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