Global Standard Stratotype-Section and Point (GSSP) for the Base of the Jiangshanian Stage (Cambrian: Furongian) at Duibian, Jiangshan, Zhejiang, Southeast China

Shanchi Peng; Loren E. Babcock; Jingxun Zuo; Xuejian Zhu; Huanling Lin; Xianfeng Yang; Yuping Qi; Gabriella Bagnoli; Longwu Wang

doi:10.18814/epiiugs/2012/v35i4/002

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Episodes 2012; 35(4): 462-477

Published online December 1, 2012

https://doi.org/10.18814/epiiugs/2012/v35i4/002

Global Standard Stratotype-Section and Point (GSSP) for the Base of the Jiangshanian Stage (Cambrian: Furongian) at Duibian, Jiangshan, Zhejiang, Southeast China

Shanchi Peng^{1, 2}, Loren E. Babcock³, Jingxun Zuo^{1, 4}, Xuejian Zhu¹, Huanling Lin¹, Xianfeng Yang⁵, Yuping Qi¹, Gabriella Bagnoli⁶, Longwu Wang⁷

¹Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China. E-mail: scpeng@nigpas.ac.cn; xjzhu@nigpas.ac.cn; ypqi@nigpas.ac.cn
²State Key Laboratory of Palaeobiology and Stratigraphy, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China
³School of Earth Sciences, The Ohio State University, 125 South Oval Mall, Columbus, Ohio 43210, USA, and Department of Geology, Lund University, Sölvegatan 12, SE 223 62 Lund, Sweden. E-mail: loren.babcock@geol.lu.se
⁴Henan Institute of Geological Survey, Zhengzhou 450007, China, zuojingxun@yahoo.com.cn
⁵Yunnan Province Key Lab in Palaeontology, Yunnan University, Kunming 650091, China. E-mail: yxf320@gmail.com
⁶Department of Earth Sciences, Pisa University, 56126 Pisa, Italy. E-mail: bagnoli@dst.unipi.it
⁷Geological Surveying Institution of Zhejiang Province, Xiaoshan, 311203, China. E-mail: zjhzwlw@126.com

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The International Commission on Stratigraphy and the IUGS Executive Committee have recently approved a Global Standard Stratotype-section and Point (GSSP) defining the base of the second stage of the Furongian Series, Cambrian System. This stage is named the Jiangshanian Stage, after Jiangshan City, western Zhejiang Province, China, where the GSSP is located. The GSSP is exposed in a natural outcrop near Duibian Village. It is defined at the base of a limestone (wackestone) layer 108.12 m above the base of the Huayansi Formation in the Duibian B section, coinciding with the first appearance of the cosmopolitan agnostoid trilobite Agnostotes orientalis (base of the A. orientalis Zone). The GSSP is at a position of 28± 48.977’N latitude and 118± 36.887’E longitude. Secondary global markers at or near the base of the stage include the first appearance of the cosmopolitan polymerid trilobite Irvingella angustilimbata, which coincides with the FAD of the primary marker in the stratotype section, and near the end of a large positive carbon isotopic excursion (SPICE excursion). Faunal turnovers close to the base of the Jiangshanian Stage have been recognized as being at the base of the Iverian Stage in Australia, the Gonggrian Stage in Korea, and the Agnostotes orientalis– Irvingella perfecta Zone in Siberia, and near the base of the Aksayan Stage in Kazakhstan, the Sunwaptan Stage in Laurentia, and the Parabolina brevispina Zone in Baltica.