Qingbaikouan and Crygenian in South China: Constraints by SHRIMP Zircon;U-Pb dating

doi:10.1111/1755-6724.12158

	Qingbaikouan and Crygenian in South China: Constraints by SHRIMP Zircon;U-Pb dating
	Gao Linzhi 4; Ding Xiaozhong ; Yin Chongyu ; Zhang Chuanheng 1; Ettensohn, Frank R.
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2013
卷号	87 期号:6 页码:1540-1553
关键词	Neoproterozoic Nanhuan System SHRIMP U-Pb Geochronology
ISSN号	1000-9515;EI 1755-6724
DOI	10.1111/1755-6724.12158
英文摘要	The Qingbaikouan System is the lowest unit of the Neoproterozoic Erathem in Chinese stratigraphic succession, and it now provides a precise geochronological framework and geological time scale for mapping and stratal correlation in China. However, a sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon age date (1368 +/- 12 Ma) obtained from a bentonite in the Qingbaikouan Xiamaling Formation indicates that it belongs to the Mesoproterozoic Erathem instead. This change is a milestone in understanding the Precambrian Stratigraphic Time Scale in China, and it has had great influence on Precambrian correlations in Asia. Otherwise, a large amount of geochronological work has been done in the Jiangnan Orogen Belt of South China, and new isotopic data have redefined the traditional recognition of metamorphosed Mesoproterozoic strata from the Sibao orogeny to the Neoproterozoic Erathem. Based on SHRIMP zircon U-Pb age data, the authors regard the Sibao orogeny (equal to the Willing orogeny) as a movement at ca 820 Ma, meaning that the Sibao orogeny was not equivalent to the Grenvillian orogeny. Finally, we report here the first SHRIMP U-Pb age of the boundary between the top of the Qingbaikouan Gongdong Formation (786.8 +/- 5.6 Ma) and the bottom of the Chang'an (diamictite) Formation (778.4 +/- 5.2 Ma), which is the age of the lowest diamictite of the Nanhuan System in China.
学科主题	前寒武纪地质
WOS关键词	MARINOAN GLACIATION ; JIANGNAN OROGEN ; NORTH CHINA ; DOUSHANTUO FORMATION ; XIAMALING FORMATION ; TECTONIC EVOLUTION ; CATHAYSIA BLOCKS ; AGE ; GEOCHRONOLOGY ; RODINIA
WOS研究方向	Geology
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000328541900008
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40182]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 2.China Univ Sci, Beijing 100083, Peoples R China. 3.Ettensohn, Frank R.] Univ Kentucky, Dept Earth & Environm Sci, Lexington, KY 40506 USA. 4.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Gao Linzhi,Ding Xiaozhong,Yin Chongyu,et al. Qingbaikouan and Crygenian in South China: Constraints by SHRIMP Zircon;U-Pb dating[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2013,87(6):1540-1553.
APA	Gao Linzhi,Ding Xiaozhong,Yin Chongyu,Zhang Chuanheng,&Ettensohn, Frank R..(2013).Qingbaikouan and Crygenian in South China: Constraints by SHRIMP Zircon;U-Pb dating.ACTA GEOLOGICA SINICA-ENGLISH EDITION,87(6),1540-1553.
MLA	Gao Linzhi,et al."Qingbaikouan and Crygenian in South China: Constraints by SHRIMP Zircon;U-Pb dating".ACTA GEOLOGICA SINICA-ENGLISH EDITION 87.6(2013):1540-1553.