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SIMS U-Pb Zircon Geochronological and Carbon Isotope Chemostratigraphic Constraints on the Ediacaran-Cambrian Boundary Succession in the Three Gorges Area, South China

文献类型：期刊论文

作者Huang, Taiyu1,2,3; Chen, Daizhao1,2,3; Ding, Yi1,2,4; Zhou, Xiqiang1,2,3; Zhang, Gongjing1,2,3
刊名JOURNAL OF EARTH SCIENCE
出版日期2020-02-01
卷号31期号:1页码:69-78
ISSN号1674-487X
关键词U-Pb dating carbon isotope chemostratigraphy Dengying Formation Ediacaran-Cambrian boundary Three Gorges area Shibantan biota geochemistry
DOI10.1007/s12583-019-1233-x
英文摘要The Ediacaran-Cambrian succession in South China records dramatic biological, oceanic and geochemical changes, but it is not well constrained geochronologically. This study reports a new SIMS U-Pb date of 543.4 +/- 3.5 Ma (MSWD=1.2) from a tuffaceous layer in the Zhoujiaao Section, and carbonate C-O isotopes in both Zhoujiaao and Sixi sections, Three Gorges area. This tuffaceous layer is present in the upper Dengying Formation (i.e., the Baimatuo Member) which is characterized by a stable delta C-13(carb) plateau and the beginning of a negative delta C-13(carb) shift near its upper boundary. In accordance with the existing biostratigraphic and chemostratigraphic data, this new date corroborates that the upper boundary of the Dengying Formation in South China is approximately equivalent to the Ediacaran-Cambrian boundary (ca. 541 Ma). This age also provides the minimum age of the last appearance of the Shibantan biota in the Three Gorges area, indicating that the terminal Ediacaran index fossils (e.g., Cloudina, Sinotubulites) are not reliable stratigraphic markers for further subdivision of the uppermost Ediacaran.
WOS关键词MEMBER DENGYING FORMATION ; YANGTZE PLATFORM ; INTEGRATIVE STRATIGRAPHY ; FOSSIL ASSEMBLAGES ; TRACE FOSSIL ; DEEP-OCEAN ; ANIMALS ; EVOLUTION ; AGE ; SECTION
WOS研究方向Geology
语种英语
出版者CHINA UNIV GEOSCIENCES, WUHAN
WOS记录号WOS:000511477000006
源URL[http://ir.iggcas.ac.cn/handle/132A11/95620]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Chen, Daizhao
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Chengdu Univ Technol, Postdoctoral Res Stn Geol Resource & Geol Engn, Chengdu 610059, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Taiyu,Chen, Daizhao,Ding, Yi,et al. SIMS U-Pb Zircon Geochronological and Carbon Isotope Chemostratigraphic Constraints on the Ediacaran-Cambrian Boundary Succession in the Three Gorges Area, South China[J]. JOURNAL OF EARTH SCIENCE,2020,31(1):69-78.
APA Huang, Taiyu,Chen, Daizhao,Ding, Yi,Zhou, Xiqiang,&Zhang, Gongjing.(2020).SIMS U-Pb Zircon Geochronological and Carbon Isotope Chemostratigraphic Constraints on the Ediacaran-Cambrian Boundary Succession in the Three Gorges Area, South China.JOURNAL OF EARTH SCIENCE,31(1),69-78.
MLA Huang, Taiyu,et al."SIMS U-Pb Zircon Geochronological and Carbon Isotope Chemostratigraphic Constraints on the Ediacaran-Cambrian Boundary Succession in the Three Gorges Area, South China".JOURNAL OF EARTH SCIENCE 31.1(2020):69-78.

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来源：地质与地球物理研究所

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