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PENG Shanchi,ZHU Xuejian,ZUO Jinxun,LIN Huanling,CHEN Yong’an,WANG Longwu.2011.Recently Ratified and Proposed Cambrian Global Standard Stratotype-section and Points[J].Acta Geologica Sinica(),(2):296-308
Recently Ratified and Proposed Cambrian Global Standard Stratotype-section and Points    Download PDF
PENG Shanchi  ZHU Xuejian  ZUO Jinxun  LIN Huanling  CHEN Yong’an  WANG Longwu
This paper is a contribution to the project Research on standard sections and some GSSPs in China supported by the Ministry of Science and Technology of China (2006FY120300), and the State Key Laboratory of Palaeobiology and Stratigraphy (20091103). The earlier research was funded by the National Natural Science Foundation of China (40072003, 40023002, 40332018, 40672023, 40602002).
DOI:
Abstract:
      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 Irvingella angustilimbata.
Key words:Global Standard Stratotype-section and Point, Guzhangian Stage, Luoyixi section, proposed Jiangshanian Stage, Duibian B section, Cambrian System
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