Fisson-track constrains on superposed folding in the Beishan orogenic belt, southernmost Altaids

doi:10.1016/j.gsf.2015.11.007

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

	Fisson-track constrains on superposed folding in the Beishan orogenic belt, southernmost Altaids
	Tian, Zhonghua 1; Xiao, Wenjiao 2,3,4; Zhang, Zhiyong 2; Lin, Xu 2
刊名	GEOSCIENCE FRONTIERS
	2016-03-01
卷号	7 期号:2 页码:181-196
DOI	10.1016/j.gsf.2015.11.007
文献子类	Article
英文摘要	The Hongyanjing inter-arc basin, is located at the central part of Beishan Orogenic College (BOC), Gansu Province, northwest China. Thick sequences of Permian sediments were strongly folded, forming extremely spectacular superposed folds. To better understand the thermal history of Hongyanjing inter-arc basin and to potentially constrain the timing of deformation, apatite fission track thermochronology method was applied on two superposed folds in the Hongyanjing Basin. Samples from the basin, yield central AFT ages ranging from similar to 206 to 118 Ma. AFT peak ages were largely consistent between samples and can divided into three groups: 245, 204-170 and 112-131 Ma. Subsequent thermal history modeling of the samples from the Hongyanjing Basin can be summarized as follows: (1) thermal reheating by sedimentary burial at similar to 260 to similar to 220 Ma; (2) major cooling from similar to 220 to similar to 180 Ma; (3) an episode of very slow subsequent cooling from similar to 180 to 65 Ma (similar to 80 degrees C) to present-day outcrop temperatures. Sediments in the Hongyanjing Basin were folded forming F-1 fold during the early to late Triassic (similar to 240-similar to 220 Ma), by regional stress, and at the time that the adjacent Xingxingxia shear zone started to become active. It is further suggested that the F-2 folding occurred at similar to 225-219 Ma. The deformation age of F-2 should be extended to 180 Ma based on our thermal history modeling for the Hongyanjing Basin, which show a rapid exhumation and cooling at the late Triassic to early Jurassic (similar to 220-similar to 180 Ma). In our interpretations, the F-1 folding is therefore thought to be related to the final closure of the Paleo-Asian Ocean, while the F-2 folding occurred at similar to 225-180 Ma associated with a major pulse of orogenesis in the BOC. (C) 2015, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V.
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000370603300004
资助机构	973 Program(2014CB440801) ; 973 Program(2014CB440801) ; NSFC(41230207 ; NSFC(41230207 ; State Key Laboratory of Earthquake Dynamics(LED2013B03) ; State Key Laboratory of Earthquake Dynamics(LED2013B03) ; 41302167) ; 41302167) ; 973 Program(2014CB440801) ; 973 Program(2014CB440801) ; NSFC(41230207 ; NSFC(41230207 ; State Key Laboratory of Earthquake Dynamics(LED2013B03) ; State Key Laboratory of Earthquake Dynamics(LED2013B03) ; 41302167) ; 41302167)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62062]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China 4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Tian, Zhonghua,Xiao, Wenjiao,Zhang, Zhiyong,et al. Fisson-track constrains on superposed folding in the Beishan orogenic belt, southernmost Altaids[J]. GEOSCIENCE FRONTIERS,2016,7(2):181-196.
APA	Tian, Zhonghua,Xiao, Wenjiao,Zhang, Zhiyong,&Lin, Xu.(2016).Fisson-track constrains on superposed folding in the Beishan orogenic belt, southernmost Altaids.GEOSCIENCE FRONTIERS,7(2),181-196.
MLA	Tian, Zhonghua,et al."Fisson-track constrains on superposed folding in the Beishan orogenic belt, southernmost Altaids".GEOSCIENCE FRONTIERS 7.2(2016):181-196.