Proposed GSSP for the base of Cambrian Stage 9, coinciding with the first appearance of Agnostotes orientalis, at Duibian, Zhejiang, China

被引：0
作者：
ShanChi Peng
Loren E. Babcock
JingXun Zuo
HuanLing Lin
XueJian Zhu
XianFeng Yang
YuPing Qi
Gabriella Bagnoli
LongWu Wang
机构：
[1] Chinese Academy of Sciences,Nanjing Institute of Geology and Palaeontology
[2] Chinese Academy of Sciences,State Key Laboratory of Paleobiology and Stratigraphy
[3] The Ohio State University,School of Earth Sciences
[4] Henan Institute of Geological Survey,Department of Earth Sciences
[5] Nanjing University,undefined
[6] Department of Earth Sciences of Pisa University,undefined
[7] Geological Surveying Institution of Zhejiang Province,undefined
来源：
Science in China Series D: Earth Sciences | 2009年 / 52卷
关键词：
Cambrian GSSP; FAD of ; China; chronostratigraphy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Exposed in natural outcrops near the Duibian Village, Jiangshan County, Zhejiang Province, China, the Duibian B section is proposed as the boundary stratotype for the base of an unnamed stage termed provisionally Cambrian Stage 9. The proposed position of the GSSP is 108.12 m above the base of the Huayansi Formation, at a horizon coinciding with the first appearance of the cosmopolitan agnostoid trilobite Agnostotes orientalis. This horizon coincides also with the first appearance of the cosmopolitan polymerid trilobite Irvingella angustilimbata. The section fulfills all the requirements for a GSSP, and the horizon can be constrained not only by the primary stratigraphic marker (A. orientalis) but also with secondary biostratigraphic, chemostratigraphic, and sequence-stratigraphic correlation tools. The first appearance of A. orientalis is one of the most readily recognizable levels in Cambrian, and can be correlated with precision to all paleocontinents.
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页码：434 / 451
页数：17
相关论文
共 103 条
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