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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
Huang, Taiyu1,2,3; Chen, Daizhao1,2,3; Ding, Yi1,2,4; Zhou, Xiqiang1,2,3; Zhang, Gongjing1,2,3
2020-02-01
Source PublicationJOURNAL OF EARTH SCIENCE
ISSN1674-487X
Volume31Issue:1Pages:69-78
AbstractThe 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.
KeywordU-Pb dating carbon isotope chemostratigraphy Dengying Formation Ediacaran-Cambrian boundary Three Gorges area Shibantan biota geochemistry
DOI10.1007/s12583-019-1233-x
WOS KeywordMEMBER DENGYING FORMATION ; YANGTZE PLATFORM ; INTEGRATIVE STRATIGRAPHY ; FOSSIL ASSEMBLAGES ; TRACE FOSSIL ; DEEP-OCEAN ; ANIMALS ; EVOLUTION ; AGE ; SECTION
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000511477000006
PublisherCHINA UNIV GEOSCIENCES, WUHAN
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Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95620
Collection油气资源研究院重点实验室
Corresponding AuthorChen, Daizhao
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, 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
First Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Petroleum Resource Research, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
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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