气候变化领域集成服务门户(CCPortal): The Jinhe-Qinghe fault-An inactive branch of the Xianshuihe-Xiaojiang fault zone, Eastern Tibet

CCPortal

DOI	10.1016/j.tecto.2012.04.004
	The Jinhe-Qinghe fault-An inactive branch of the Xianshuihe-Xiaojiang fault zone, Eastern Tibet
	Wang Shifeng; Jiang Guiguo; Xu Tiande; Tian Yuntao; Zheng Dewen; Fang Xiaomin
通讯作者	Wang, SF (通讯作者)
发表日期	2012
ISSN	0040-1951
EISSN	1879-3266
起始页码	93
结束页码	102
卷号	544
英文摘要	The Xianshuihe-Xiaojiang fault zone (XFZ) forms a prominent linear NW-SE trending tectonic feature along the southeastern margin of the Tibetan Plateau. The spatial and temporal evolution of the predominantly strike-slip movement along the fault remains unclear, as estimates for the initiation age of its different segments range from 5 to 13 Ma. The Jinhe-Qinghe fault (JqF; the south part of the Longmen Shan thrust belt) provides a key for understanding the tectonic role and deformation history of the Xianshuihe-Xiaojiang fault zone in terms of timing, magnitude of displacement, and spatial-temporal evolution. This paper presents research on the structure and chronology of the JqF. The results of a geometric and kinematic study of the Jinhe-Qinghe fault show it to be a thrust fault with a left-lateral strike slip component: The strike slip offset extends at least 13-18 km to southwest, based on the shortening of its folds and faulting, and based on stream deflection. Ten apatite fission track apparent ages shows pronounced change in age/elevation gradient at similar to 17 +/- 2 Ma, consistent with an abrupt increase of exhumation due to uplift of the hanging wall of the JqF at that time. Combined with the age of deformed Tertiary strata in the footwall of the JqF and the geometric relationships of the JqF with the Chenghai fault and the XFZ, this indicates that the JqF was active between 17 and 5 Ma. Based on the fault chronology, geometry, and movement, we suggest that the fault was a transpressional structure at the south end of the XFZ during the period from 17 to 5 Ma. (C) 2012 Elsevier B.V. All rights reserved.
关键词	WEST SICHUAN SHEAR ZONE DEFORMATION SLIP SHAN EVOLUTION SYSTEM CHINA TECTONICS PLATEAU
英文关键词	Xianshuihe-Xiaojiang fault zone; Longmen Shan thrust belt; Jinhe-Qinghe fault; Offset; Left-lateral strike slip
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000305312100007
来源期刊	TECTONOPHYSICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258068
推荐引用方式 GB/T 7714	Wang Shifeng,Jiang Guiguo,Xu Tiande,et al. The Jinhe-Qinghe fault-An inactive branch of the Xianshuihe-Xiaojiang fault zone, Eastern Tibet[J]. 中国科学院青藏高原研究所,2012,544.
APA	Wang Shifeng,Jiang Guiguo,Xu Tiande,Tian Yuntao,Zheng Dewen,&Fang Xiaomin.(2012).The Jinhe-Qinghe fault-An inactive branch of the Xianshuihe-Xiaojiang fault zone, Eastern Tibet.TECTONOPHYSICS,544.
MLA	Wang Shifeng,et al."The Jinhe-Qinghe fault-An inactive branch of the Xianshuihe-Xiaojiang fault zone, Eastern Tibet".TECTONOPHYSICS 544(2012).