Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia



Advanced Search

Russian Geology and Geophysics

2013 year, number 3

NEW DATA ON THE MAGNETOSTRATIGRAPHY OF THE JURASSICCRETACEOUS BOUNDARY INTERVAL, NORDVIK PENINSULA ( northern East Siberia)

V.Yu. Bragin, O.S. Dzyuba, A.Yu. Kazansky, B.N. Shurygin
Keywords: JurassicCretaceous boundary, northern Siberia, magnetostratigraphy, ammonites, belemnites, buchias, TethyanBoreal correlation
Pages: 335-348

Abstract

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 VolgianRyazanian 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.