Biostratigraphic and chemostratigraphic constraints on the age of early   Neoproterozoic carbonate successions in North China

doi:10.1016/j.precamres.2014.03.004

CORC > 北京大学 > 地球与空间科学学院

	Biostratigraphic and chemostratigraphic constraints on the age of early Neoproterozoic carbonate successions in North China
	Xiao, Shuhai ; Shen, Bing ; Tang, Qing ; Kaufman, Alan J. ; Yuan, Xunlai ; Li, Jianhua ; Qian, Maiping
刊名	precambrian research
	2014
关键词	Carbon isotopes Sulfur isotopes Acritarchs Vase-shaped microfossils Neoproterozoic North China VASE-SHAPED MICROFOSSILS U-PB AGES ISOTOPIC COMPOSITION XIAMALING FORMATION PROTEROZOIC SUCCESSIONS DOUSHANTUO FORMATION NORTHWESTERN CANADA COMPRESSION FOSSILS LIULAOBEI FORMATION EAST GREENLAND
DOI	10.1016/j.precamres.2014.03.004
英文摘要	Thick carbonate successions of Proterozoic age were deposited in the Huaibei and Huainan regions along the southern margin of the North China Block. These successions, including the Huaibei Group in the Huaibei region and the Huainan and Feishui groups in the Huainan region, have been correlated with the Qingbaikou Group, which outcrops in the Jixian area of North China and is the eponymous succession of the Qingbaikouan System (traditionally regarded as 1000-800 Ma). Recently, it has been shown that lower Qingbaikouan strata in the Jixian area may be as old as 1300-1400 Ma. By correlation, the Huaibei, Huainan, and Feishui groups may include Mesoproterozoic strata, but these units have also been interpreted as Tonian or Cryogenian-Ediacaran-Cambrian in age. These contradictory age interpretations hamper our ability to explore the rich paleontological and sedimentary records preserved in these rocks and to assess paleogeographic reconstructions. In this report, we describe new microfossils and stable isotope data (delta C-13(carb), delta O-18(carb), delta S-34(CAS)) from the Huaibei, Huainan, and Feishui groups. Possible vase-shaped microfossils from the Jiayuan Formation of the lower Huaibei Group and characteristic early Neoproterozoic acritarchs (particularly Trachyhystrichosphaera aimika) from the Gouhou and Liulaobei formations are consistent with a Tonian age for the Huaibei and Huainan groups. Similarly, carbon isotope trends in the Huaibei, Huainan, and Feishui groups are comparable with Tonian delta C-13(carb) patterns in South Australia and Laurentia, with a plateau of moderately positive (1-5 parts per thousand) values followed by pro nounced negative delta C-13(carb) excursion in the Gouhou Formation, which may be equivalent to the Bitter Springs anomaly in South Australia. delta S-34(CAS) values of the Huaibei Group are mostly 25-40 parts per thousand, similar to values from the stratigraphically equivalent Jingeryu Formation in the Jixian area. Overall, the combination of biostratigraphic, chemostratigraphic, and available radiometric data suggests that the Huaibei, Huainan, and Feishui groups are early Neoproterozoic (Tonian) in age. (C) 2014 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000336773100012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geosciences, Multidisciplinary; SCI(E); 7; ARTICLE; xiao@vt.edu; 208-225; 246
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/213130]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Xiao, Shuhai,Shen, Bing,Tang, Qing,et al. Biostratigraphic and chemostratigraphic constraints on the age of early Neoproterozoic carbonate successions in North China[J]. precambrian research,2014.
APA	Xiao, Shuhai.,Shen, Bing.,Tang, Qing.,Kaufman, Alan J..,Yuan, Xunlai.,...&Qian, Maiping.(2014).Biostratigraphic and chemostratigraphic constraints on the age of early Neoproterozoic carbonate successions in North China.precambrian research.
MLA	Xiao, Shuhai,et al."Biostratigraphic and chemostratigraphic constraints on the age of early Neoproterozoic carbonate successions in North China".precambrian research (2014).