The first precise age constraints on the Jixian System of the Meso- to Neoproterozoic Standard Section of China: SHRIMP zircon U-Pb dating of bentonites from the Wumishan and Tieling formations in the Jixian Section, North China Craton

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	The first precise age constraints on the Jixian System of the Meso- to Neoproterozoic Standard Section of China: SHRIMP zircon U-Pb dating of bentonites from the Wumishan and Tieling formations in the Jixian Section, North China Craton
	Li HuaiKun 6; Su WenBo 1; Zhou HongYing ; Xiang ZhenQun ; Tian Hui ; Yang LiGong 2; Huff, Warren D.; Ettensohn, Frank R.
刊名	ACTA PETROLOGICA SINICA
	2014
卷号	30 期号:10 页码:2999-3012
关键词	Jixian Section Bentonite Tieling Formation Wumishan Formation SHRIMP U-Pb dating Mesoproterozoic North China Craton
ISSN号	1000-0569
英文摘要	Although known as the Meso- to Neoproterozoic Standard Section of China for more than half a century, the age of the famous Jixian Section (Jixian County, Tianjin City) has been rather poorly constrained, mainly by Rb-Sr and K-Ar ages that have proven unreliable and inaccurate in most cases. In recent years, significant progress has been made in studying the Meso- to Neoproterozoic geochronology of the North China Craton. To date, however, only one accurate U-Pb zircon age of 1625 +/- 6Ma from volcanic rocks of the Dahongyu Formation, and two duplicate zircon U-Pb ages of about 1635Ma from mafic sills crosscutting the Chuanlinggou Formation of the Changchengian System in the lower part of the Jixian Section, has been reported. In addition, no one until now has obtained this kind of age dates directly from carbonate-dominated parts of the succession at the Jixian Section. Fortunately, bentonite beds were recently discovered for the first time in the Tieling and Wumishan formations at the Jixian Section, and ages of similar to 1440Ma (1439 +/- 14Ma) and similar to 1485Ma (1483 +/- 13Ma and 1487 +/- 16Ma) for the bentonite beds were obtained by means of SHRIMP zircon U-Pb dating. This achievement means that the shallow-marine, carbonate-dominated Tieling and Wumishan formations,:the upper two stratigraphic units of the conventional Jixian System at the Jixian Standard Section, are now temporally constrained by direct zircon U-Pb dating. Furthermore, it is the first time that the Wumishan Formation from the entirety of the North China Craton has been precisely dated. Moreover, the current SHRIMP zircon age of about 1440Ma for the bentonite in the Tieling Formation at the Jixian Standard Section is the same as the age reported earlier in Pingquan County, Hebei Province, in the east Yanshan Mountains on the northern margin of the NCC. Consequently, this progress in age dating of the bentonite beds in the carbonate-dominated succession provides new, accurate, benchmark ages for further clarification of the chronostratigraphic framework of the well-known Jixian Meso- to Neoproterozoic Standard Section and helps to consolidate its position for correct correlation with relevant strata, both regionally and internationally.
学科主题	地层学与地史学
WOS关键词	TIME-SCALE ; GEOCHRONOLOGY ; SUBDIVISION ; BED
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000344215200015
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40285]
专题	中国地质调查局天津地质调查中心
作者单位	1.CGS, Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R China 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 3.Management Ctr Natl Nat Reserve Middle Upper Prot, Tianjin 301900, Jixian County, Peoples R China 4.Huff, Warren D.] Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA 5.Ettensohn, Frank R.] Univ Kentucky, Dept Earth & Environm Sci, Lexington, KY 40506 USA 6.中国地质调查局天津地质调查中心
推荐引用方式 GB/T 7714	Li HuaiKun,Su WenBo,Zhou HongYing,et al. The first precise age constraints on the Jixian System of the Meso- to Neoproterozoic Standard Section of China: SHRIMP zircon U-Pb dating of bentonites from the Wumishan and Tieling formations in the Jixian Section, North China Craton[J]. ACTA PETROLOGICA SINICA,2014,30(10):2999-3012.
APA	Li HuaiKun.,Su WenBo.,Zhou HongYing.,Xiang ZhenQun.,Tian Hui.,...&Ettensohn, Frank R..(2014).The first precise age constraints on the Jixian System of the Meso- to Neoproterozoic Standard Section of China: SHRIMP zircon U-Pb dating of bentonites from the Wumishan and Tieling formations in the Jixian Section, North China Craton.ACTA PETROLOGICA SINICA,30(10),2999-3012.
MLA	Li HuaiKun,et al."The first precise age constraints on the Jixian System of the Meso- to Neoproterozoic Standard Section of China: SHRIMP zircon U-Pb dating of bentonites from the Wumishan and Tieling formations in the Jixian Section, North China Craton".ACTA PETROLOGICA SINICA 30.10(2014):2999-3012.