Recently Ratified and Proposed Cambrian Global Standard Stratotype-section and Points  

作　　者：PENG Shanchi ZHU Xuejian ZUO Jinxun LIN Huanling CHEN Yong＇an WANG Longwu 

机构地区：[1]State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, the Chinese Academy of Sciences, Nanjing 210008, China [2]Henan Institute of Geological Survey, Zhengzhou 450007, China [3]No. 405 Geological Team of Hunan Bureau of Geology and Mineral Resources, Jishou 416007, China [4]Geological Surveying Institution of Zhejiang Province, Xiaoshan 311203, China

出　　处：《Acta Geologica Sinica(English Edition)》2011年第2期296-308,共13页地质学报（英文版）

基　　金：supported by the Ministry of Science and Technology of China (2006FY120300);the State Key Laboratory of Palaeobiology and Stratigraphy (20091103);funded by the National Natural Science Foundation of China (40072003, 40023002, 40332018, 40672023, 40602002)

摘　　要：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.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.

关 键 词：Global Standard Stratotype-section and Point Guzhangian Stage Luoyixi section proposed Jiangshanian Stage Duibian B section Cambrian System 

分 类 号：P534.42[天文地球—古生物学与地层学] P534.41[天文地球—地质学]