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Recently Ratified and Proposed Cambrian Global Standard Stratotype-section and Points 被引量:5
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作者 PENG Shanchi ZHU Xuejian +3 位作者 ZUO Jinxun LIN Huanling CHEN Yong'an WANG Longwu 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2011年第2期296-308,共13页
This paper briefly summarizes an officially ratified Global Standard Stratotype-section and Point (GSSP) and a proposed GSSP for global stages of the Cambrian System. The Luoyixi section near Luoyixi town, Guzhang, ... This paper briefly summarizes an officially ratified Global Standard Stratotype-section and Point (GSSP) and a proposed GSSP for global stages of the Cambrian System. The Luoyixi section near Luoyixi town, Guzhang, northwestern Hunan is ratified as the boundary stratotype for the base of the global Guzhangian Stage, which is the upmost stage of an unnamed series termed provisionally as Cambrian Series 3. The GSSP position lies 121.3 m above the base of the Huaqiao Formation in the section, coinciding with the first appearance of the cosmopolitan agnostoid trilobite Lejopyge leavigata.The Duibian B section at Duibian village, Jiangshan, western Zhejiang, is proposed as the boundary stratotype for the base of the proposed global Jiangshanian Stage that is the second stage of the Furongian Series. The proposed GSSP position lies 108.12 m above the base of the Huayansi Formation in the section, coinciding with the first appearance of the cosmopolitan agnostoid trilobite Agnostotes orientalius. This horizon is also with the first appearance of the cosmopolitan polymerid trilobite lrvingella angustilimbata. 展开更多
关键词 Global Standard Stratotype-section and Point Guzhangian Stage Luoyixi section proposed Jiangshanian Stage duibian B section Cambrian System
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