Calibrating the Guadalupian Series (Middle Permian) of South China

doi:10.1016/j.palaeo.2016.11.011

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

	Calibrating the Guadalupian Series (Middle Permian) of South China
	Wu, Qiong 1; Ramezani, Jahandar 2; Zhang, Hua 1; Wang, Tian-tian 3; Yuan, Dong-xun 1; Mu, Lin 1; Zhang, Yi-chun 1; Li, Xian-hua 4; Shen, Shu-zhong 1
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2017-01-15
卷号	466 页码:361-372
关键词	Guadalupian Zircon U-pb Geochronology South China Kuhfeng Formation Jinogondolella Nankingensis
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2016.11.011
文献子类	Article
英文摘要	The Guadalupian Epoch represents one of the most critical intervals during the Earth history which is characterized by a series of global geological and biological events. However, it is poorly constrained by radioisotopic ages in comparison with the high-precision dates from the Lopingian and lowest Triassic in South China and the Cisuralian in southern Urals, Russia. In this study, we report combined CA-ID-TIMS and SIMS U-Pb zircon geochronology for three ash beds from the base and lower part of the Kuhfeng Formation in the Chaohu area, southeastern China. Zircons from Ash Beds A, C and D were initially analyzed by SIMS and yielded weighted mean Pb-206/U-238 dates of 269.0 +/- 1.4 Ma (MSWD = 1.03, n = 31), 266.3 +/- 2.2 Ma (MSWD = 2.2, n = 29) and 262.2 +/- 1.7 Ma (MSWD = 1.0, n = 20) in ascending order. However, high-precion U-Pb geochronology of the same ash beds by the CA-ID-TIMS method point to important inaccuracies in the SIMS results due to Pb-loss in zircons. Ash Beds A and C yielded two TIMS weighted mean Pb-206/U-238 dates of 272.95 +/- 0.11 Ma (MSWD = 1.9, n = 7) and 271.038 +/- 0.097 Ma (MSWD = 2.2, n = 8), respectively. The depositional age of 272.95 +/- 0.11 Ma for Ash Bed A is postulated as the traditional Cisuralian-Guadalupian boundary (CGB) age in South China. Our new geochronology suggests that the Guadalupian Series in South China had a total duration of 13.85 +/- 0.52 myr given a Guadalupian-Lopingian boundary (GLB) age of 259.1 +/- 0.5 Ma. The new age calibration of the base of the Guadalupian Series is ca. 0.65 (+/- 0.51) myr older than - and improves upon the previous estimates for the CGB age and the duration of the Guadalupian Epoch based on the 2016 International Chronostratigraphic Chart (ICC) and the 2012 Geologic Time Scale (GTS). (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词	LARGE IGNEOUS PROVINCE ; PB ZIRCON GEOCHRONOLOGY ; U-PB ; MASS EXTINCTION ; SW CHINA ; LOPINGIAN BOUNDARY ; TIME-SCALE ; PRECISION ; AGE ; EVOLUTION
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000392766900030
资助机构	NSFC(41420104003 ; Chinese Academy of Sciences(XDB18030400) ; 41290260 ; 41273081) ; NSFC(41420104003 ; Chinese Academy of Sciences(XDB18030400) ; 41290260 ; 41273081) ; NSFC(41420104003 ; Chinese Academy of Sciences(XDB18030400) ; 41290260 ; 41273081) ; NSFC(41420104003 ; Chinese Academy of Sciences(XDB18030400) ; 41290260 ; 41273081)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53119]
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	Zhang, Hua
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 2.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA 3.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wu, Qiong,Ramezani, Jahandar,Zhang, Hua,et al. Calibrating the Guadalupian Series (Middle Permian) of South China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2017,466:361-372.
APA	Wu, Qiong.,Ramezani, Jahandar.,Zhang, Hua.,Wang, Tian-tian.,Yuan, Dong-xun.,...&Shen, Shu-zhong.(2017).Calibrating the Guadalupian Series (Middle Permian) of South China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,466,361-372.
MLA	Wu, Qiong,et al."Calibrating the Guadalupian Series (Middle Permian) of South China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 466(2017):361-372.