The Global Boundary Stratotype Section and Point (GSSP) of the Guzhangian Stage (Cambrian) in the Wuling Mountains, Northwestern Hunan, China
The Global Boundary Stratotype Section and Point (GSSP) of the Guzhangian Stage (Cambrian) in the Wuling Mountains, Northwestern Hunan, China
复制标题
中国湘西北武陵山古丈阶(寒武系)全球边界层型剖面和点(GSSP)
DOI:
10.18814/epiiugs/2009/v32i1/006
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发表时间:
2009-03
期刊:
影响因子:
3.1
通讯作者:
Yong’an Chen
中科院分区:
文献类型:
--
作者:
Xuejian Zhu;Gabriella Bagnoli;Yuping Qi;Huanling Lin;Richard A. Robison;Shanchi Peng;Xianfeng Yang;Loren E. Babcock;Jingxun Zuo;Yong’an Chen
The Global boundary Stratotype Section and Point (GSSP) for the base of the Guzhangian Stage (Cambrian Series 3) is defined at the base of a limestone (calcisiltite) layer 121.3 m above the base of the Huaqiao Formation in the Louyixi section along the Youshui River (Fengtan Reservoir), about 4 km northwest of Luoyixi (4 km southeast of Wangcun), in northwestern Hunan, China. The GSSP is exposed in a road cut at a position of 28°43.20' N and 109°57.88' E. The GSSP level contains the lowest occurrence of the cosmopolitan agnostoid trilobite Lejopyge laevigata (base of the L. laevigata Zone). Secondary global markers near the base of the stage include the appearance of either L. calva or L. armata just below the base of the stage, the appearance of conodonts associated with the base of the Laiwugnathus laiwuensis Zone, and the transgressive phase of a small eustatic event. Faunal turnovers close to the base of the Guzhangian Stage are recognized as near the base of the Boomerangian Stage in Australia, the base of the Aldanaspis Zone (polymerid trilobites) in Siberia, and the base of the Paradoxides forchhammeri Zone in western Avalonia. The horizon corresponding to the first appearance of L. laevigata is near the peak of a rather long negative δ 13 C excursion of up to 0.58 ‰.
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DOI:
10.1016/s1002-0705(08)60020-5
发表时间:
2008-02
期刊:
Journal of China University of Geosciences
影响因子:
--
作者:
Zuo Jing-xun;P. Shanchi;Zhu Xue-jian;Qi Yuping;L. Huanling;Yang Xianfeng
通讯作者:
Zuo Jing-xun;P. Shanchi;Zhu Xue-jian;Qi Yuping;L. Huanling;Yang Xianfeng
影响因子:
2.2
作者:
R. Cooper;J. Jago;J. Begg
通讯作者:
R. Cooper;J. Jago;J. Begg
影响因子:
2.3
作者:
N. Axheimer;M. Eriksson;P. Ahlberg;Anders Bengtsson
通讯作者:
N. Axheimer;M. Eriksson;P. Ahlberg;Anders Bengtsson
DOI:
--
发表时间:
1976
期刊:
--
影响因子:
--
作者:
J. Jago
通讯作者:
J. Jago
DOI:
10.26749/rstpp.135.1
发表时间:
2001
期刊:
--
影响因子:
--
作者:
J. Jago;A. Brown
通讯作者:
J. Jago;A. Brown