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Geochronological constraints on stratigraphic correlation and oceanic oxygenation in Ediacaran-Cambrian transition in South China

文献类型：期刊论文

作者Yang, Chuan1,2; Zhu, Maoyan3; Condon, Daniel J.4; Li, Xian-Hua1,2
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2017-06-01
卷号140页码:75-81
关键词Zircon U-Pb age Ediacaran Cambrian Liuchapo Formation Oceanic oxygenation South China
ISSN号1367-9120
DOI10.1016/j.jseaes.2017.03.017
文献子类Article
英文摘要The continuous late Ediacaran - early Cambrian deep-water successions of South China archive the complete evolution of seawater chemical conditions in the deep ocean during this critical time interval. However, the geochemical data from these poorly fossiliferous and condensed successions lack high-resolution stratigraphic constraints, hampering their interpretation for the spatio-temporal evolution of the sweater chemistry in this time interval. In this study, we report a new SIMS and CA-ID-TIMS zircon U-Pb age 545.76 +/- 0.66 Ma (total uncertainty) for an ash bed at the lower Liuchapo Formation in the deep-water Longbizui section in western Hunan Province. The new age suggests that the lower and the middle-upper parts of the Liuchapo Formation in the deep water facies can be correlated with the lower Dengying Formation and the upper Dengying - lower Zhujiaqing formations in the shallow water facies, respectively. This correlation implies that the correlative horizon of the Ediacaran-Cambrian boundary in the deep water facies in South China is likely located near the base of a widespread negative delta C-13(org), excursion at the upper Liuchapo Formation. Based on our new geochronological framework, the compilations of Fe-speciation, Mo, and U data indicate that the deep ocean was characterized by widespread anoxic, ferruginous water, with intermittent euxinic water impinged on the middle-lower slope in Ediacaran-Cambrian transition, and significant oxygenation events occurred in 533-520 Ma. The compilations do not support any significant oceanic oxygenation events in 551-535 Ma.
WOS关键词ORGANIC-CARBON ISOTOPE ; PB ZIRCON AGES ; U-PB ; YANGTZE PLATFORM ; DOUSHANTUO FORMATION ; XIAOTAN SECTION ; TRACE-ELEMENT ; O ISOTOPES ; HF ; BOUNDARY
WOS研究方向Geology
语种英语
WOS记录号WOS:000405154200005
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Academy of Sciences(XDB18030300) ; Chinese Academy of Sciences(XDB18030300) ; Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Academy of Sciences(XDB18030300) ; Chinese Academy of Sciences(XDB18030300) ; Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Academy of Sciences(XDB18030300) ; Chinese Academy of Sciences(XDB18030300) ; Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Ministry of Science and Technology(2013CB835000) ; Chinese Academy of Sciences(XDB18030300) ; Chinese Academy of Sciences(XDB18030300)
源URL[http://ir.iggcas.ac.cn/handle/132A11/46060]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Li, Xian-Hua
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
4.British Geol Survey, NERC Isotope Geosci Lab, Keyworth NG12 5GG, Notts, England
推荐引用方式
GB/T 7714		 Yang, Chuan,Zhu, Maoyan,Condon, Daniel J.,et al. Geochronological constraints on stratigraphic correlation and oceanic oxygenation in Ediacaran-Cambrian transition in South China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2017,140:75-81.
APA Yang, Chuan,Zhu, Maoyan,Condon, Daniel J.,&Li, Xian-Hua.(2017).Geochronological constraints on stratigraphic correlation and oceanic oxygenation in Ediacaran-Cambrian transition in South China.JOURNAL OF ASIAN EARTH SCIENCES,140,75-81.
MLA Yang, Chuan,et al."Geochronological constraints on stratigraphic correlation and oceanic oxygenation in Ediacaran-Cambrian transition in South China".JOURNAL OF ASIAN EARTH SCIENCES 140(2017):75-81.

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来源：地质与地球物理研究所

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