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Episodic Precambrian crust growth: Evidence from U-Pb ages and Hf-O isotopes of zircon in the Nanhua Basin, central South China

文献类型：期刊论文

作者Wang, Xuan-Ce1,2,3; Li, Xian-hua2; Li, Zheng-Xiang1; Li, Qiu-li2; Tang, Guo-Qiang2; Gao, Yu-Ya2; Zhang, Qi-Rui2; Liu, Yu2
刊名PRECAMBRIAN RESEARCH
出版日期2012-12-01
卷号222页码:386-403
关键词Rodinia Juvenile crustal growth Zircon Hf-O isotopes Zircon U-Pb ages Nanhua Basin South China Block
ISSN号0301-9268
DOI10.1016/j.precamres.2011.06.001
文献子类Article
英文摘要We report here the first integrated U-Pb dating and hafnium-oxygen isotope analyses of detrital zircon grains from sedimentary and volcaniclastic rocks in the Neoproterozoic Nanhua Basin, central South China. These data provide vital information on the depositional cycles of the Cryogenian strata and their bearings on the breakup of the Rodinia supercontinent, and the characteristics of Precambrian crustal growth in the South China Block and neighboring continents. Zircon SIMS U-Pb ages indicate that the Qingshuijiang Formation was deposited at 772 +/- 5 Ma and the Fanzhao Formation was deposited between 800 and 770 Ma. The onset time of the Sturtian (Jiangkou) glaciation is constrained to be no older than 730 Ma. Together with compilations of all available high precision zircon U-Pb data on tuff beds in the Nanhua Basin, our work demonstrates that the Cryogenian deposition in South China began at about 850 Ma and had three depositional cycles at ca. 850-820 Ma, 820-720 Ma and 720-635 Ma. Hf isotope analyses and U-Pb dating, combined with existing O isotope analyses, of detrital zircon have revealed three striking features for grains with 1.0-0.7 Ga ages: (1) about 22% of total analysed grains have Hf isotope compositions that plot between the new continental crust and depleted mantle growth curves; (2) about 80% of zircon grains have delta O-18 values below 6.5 parts per thousand; and (3) 950-700 Ma is the most dominant age group in the total of 1616 concordant detrital zircon ages from the Cryogenian sedimentary rocks. The Early Neoproterozoic (1.0-0.7 Ga) thus appears to have witnessed significant juvenile crustal growth in South China. In addition, zircon analyses of the Cryogenian sedimentary rocks revealed 3.2-2.9 Ga and possibly 2.7-2.4 Ga as two additional episodes of juvenile crust growth in South China and neighboring continents. (c) 2011 Elsevier B.V. All rights reserved.
WOS关键词GA CONTINENTAL-CRUST ; LOWER BOUNDARY AGE ; YANGTZE BLOCK ; DETRITAL ZIRCON ; NEOPROTEROZOIC GLACIATIONS ; OXYGEN ISOTOPES ; VOLCANIC-ROCKS ; BREAK-UP ; LU-HF ; RIFT MAGMATISM
WOS研究方向Geology
语种英语
WOS记录号WOS:000313765700020
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; 40803010) ; 40803010) ; 40803010) ; 40803010) ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; 40803010) ; 40803010) ; 40803010) ; 40803010) ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; 40803010) ; 40803010) ; 40803010) ; 40803010) ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; National Natural Science foundation of China(40773007 ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; Australian Research Council (ARC) Discovery Project(DP0770228) ; 40803010) ; 40803010) ; 40803010) ; 40803010)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84416]  
专题中国科学院地质与地球物理研究所
通讯作者Wang, Xuan-Ce
作者单位1.Curtin Univ Technol, Dept Appl Geol, Inst Geosci Res, Perth, WA 6845, Australia
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
3.Univ Western Australia, Sch Earth & Environm, Crawley, WA 6009, Australia
推荐引用方式
GB/T 7714		 Wang, Xuan-Ce,Li, Xian-hua,Li, Zheng-Xiang,et al. Episodic Precambrian crust growth: Evidence from U-Pb ages and Hf-O isotopes of zircon in the Nanhua Basin, central South China[J]. PRECAMBRIAN RESEARCH,2012,222:386-403.
APA Wang, Xuan-Ce.,Li, Xian-hua.,Li, Zheng-Xiang.,Li, Qiu-li.,Tang, Guo-Qiang.,...&Liu, Yu.(2012).Episodic Precambrian crust growth: Evidence from U-Pb ages and Hf-O isotopes of zircon in the Nanhua Basin, central South China.PRECAMBRIAN RESEARCH,222,386-403.
MLA Wang, Xuan-Ce,et al."Episodic Precambrian crust growth: Evidence from U-Pb ages and Hf-O isotopes of zircon in the Nanhua Basin, central South China".PRECAMBRIAN RESEARCH 222(2012):386-403.

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来源：地质与地球物理研究所

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