The Upper Bajocian-Lower Bathonian boundary section in the outskirts of Saratov: Molluscan characteristics and biostratigraphy

被引：14

作者：

Mitta, V. V. ^{[1
]}

Zakharov, V. A. ^{[2
]}

Barskov, I. S. ^{[1
]}

Sel'tser, V. B. ^{[3
]}

Ivanov, A. V. ^{[3
]}

机构：

[1] Russian Acad Sci, Borissiak Paleontol Inst, Moscow 117647, Russia

[2] Russian Acad Sci, Geol Inst GIN, Moscow 119017, Russia

[3] NG Chernyshevskii Saratov State Univ, Saratov 410012, Russia

来源：

STRATIGRAPHY AND GEOLOGICAL CORRELATION | 2011年 / 19卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

Saratov Volga region; ammonites; Bajocian; Bathonian; biostratigraphy; zones; Boreal-Tethyan correlation;

D O I：

10.1134/S086959381105008X

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The analysis of all available data on the structure of the Bajocian-Bathonian boundary section in the outskirts of Saratov (Sokur quarry) and the taxonomic composition of its ammonites, belemnites, and bivalves revealed a continuous succession of the Pseudocosmoceras michalskii (Upper Bajocian), Oraniceras besnosovi, and Arcticoceras ishmae (Lower Bathonian) zones. In connection with the critique by Meledina et al. (2009), correlation of Bajocian and Bathonian boundary strata of the Central Russia and Northern Siberia is discussed. The inconsistency of Siberian bivalve and belemnite assemblages with Central Russian ammonite zones is explained by heterochronous invasions of different molluscan groups.

引用

页码：502 / 514

页数：13

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