SIMS U-Pb zircon geochronological constraints on upper Ediacaran stratigraphic correlations, South China

doi:10.1017/S0016756816001102

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	SIMS U-Pb zircon geochronological constraints on upper Ediacaran stratigraphic correlations, South China
	Yang, Chuan 1,2,3; Li, Xian-Hua 1,2; Zhu, Maoyan 2,4; Condon, Daniel J.3
刊名	GEOLOGICAL MAGAZINE
	2017-11-01
卷号	154 期号:6 页码:1202-1216
关键词	Zircon U-pb Age Ediacaran Dengying Formation Ediacaran Fossil South China
ISSN号	0016-7568
DOI	10.1017/S0016756816001102
文献子类	Article
英文摘要	Fossiliferous Ediacaran successions of South China, the Doushantuo and Dengying formations and their equivalents, are key to understanding bio- and geological evolution at the Neoproterozoic-Cambrian transition. However, their absolute ages, especially the upper Ediacaran successions, are poorly constrained. SIMS zircon U-Pb dating results in this study suggest that ash beds at the basal and middle parts of the Jiucheng Member (middle Dengying Formation) in eastern Yunnan Province were deposited at 553.6 +/- 2.7/(3.8) Ma and 546.3 +/- 2.7/(3.8) Ma, respectively. These new dates indicate that the age for the base of Dengying Formation in eastern Yunnan Province is similar to the 550.55 +/- 0.75 Ma date, which is from an ash bed at the top of the Miaohe Member and has been regarded as the age for the base of Dengying Formation in Yangtze Gorges area. These dates do not permit a clear test of the two correlation models for the chronostratigraphic position of the Miaohe Member (uppermost Doushantuo Formation vs. middle Dengying Formation), implying that further integrated intra-basinal stratigraphic correlations and more high-resolution chronological data from the upper Ediacaran deposits of South China are required. New dates of the Jiucheng Member constrain the age of the fossil biotas in the middle Dengying Formation and extend the stratigraphic range of Rangea, Hiemalora and Charniodiscus to 546.3 +/- 2.7/(3.8) Ma. The geochronology of the Dengying Formation implies that Ediacaran-type fossils preserved in this formation are younger than the White Sea Assemblage and temporally overlapping with the Nama Assemblage.
WOS关键词	ION MASS-SPECTROMETRY ; FOSSIL ASSEMBLAGES ; ISOTOPE EVOLUTION ; YANGTZE PLATFORM ; NATURAL ZIRCON ; TRACE FOSSILS ; EARTH HISTORY ; MIAOHE BIOTA ; O ISOTOPES ; BREAK-UP
WOS研究方向	Geology
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000413978800003
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)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62475]
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.British Geol Survey, NERC, Isotope Geosci Lab, Keyworth NG12 5GG, Notts, England 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Chuan,Li, Xian-Hua,Zhu, Maoyan,et al. SIMS U-Pb zircon geochronological constraints on upper Ediacaran stratigraphic correlations, South China[J]. GEOLOGICAL MAGAZINE,2017,154(6):1202-1216.
APA	Yang, Chuan,Li, Xian-Hua,Zhu, Maoyan,&Condon, Daniel J..(2017).SIMS U-Pb zircon geochronological constraints on upper Ediacaran stratigraphic correlations, South China.GEOLOGICAL MAGAZINE,154(6),1202-1216.
MLA	Yang, Chuan,et al."SIMS U-Pb zircon geochronological constraints on upper Ediacaran stratigraphic correlations, South China".GEOLOGICAL MAGAZINE 154.6(2017):1202-1216.