Late Cenozoic deformation along the northwestern continuation of the Xianshuihe fault system, Eastern Tibetan Plateau

doi:10.1130/B25833.1

	Late Cenozoic deformation along the northwestern continuation of the Xianshuihe fault system, Eastern Tibetan Plateau
	Wang, Shifeng 1,2; Fan, Chun 1; Wang, Gang 1; Wang, Erchie 1,2
刊名	GEOLOGICAL SOCIETY OF AMERICA BULLETIN
	2008-03-01
卷号	120 期号:3-4 页码:312-327
关键词	Xianshuihe fault system stream offset late Cenozoic time restraining bend clockwise rotation
ISSN号	0016-7606
DOI	10.1130/B25833.1
文献子类	Article
英文摘要	The Xianshuihe fault system is a highly active, left-lateral slip fault that has played an important role in accommodating late Cenozoic crustal deformation of the Eastern Tibetan Plateau. The left-lateral displacement on the western portion of the fault system, the Ganzi fault, is similar to 80 km, based on geologic and geomorphic markers. Left-lateral movement along the fault may have initiated in middle Miocene time (12 Ma), followed by the intensive, brittle, left-lateral movement in late Cenozoic time (2-4 Ma). Lying within the headwater regions of the Jinsha (Yangtze) River in the Yushu region, the northwestern end of the Xianshuihe fault system consists of four branches. These are, from north to south-the Dangjiang fault, the Yushu fault, the Batang fault, and the Xialaxiu fault. Both the Yushu and Dangjiang faults display clear geologic and geomorphic evidence for active, left-lateral slip movement. Several offset markers of Triassic age along the Dangjiang fault suggest similar to 39 km of left-lateral slip, but the geomorphic evidence along the Dangjiang and Yushu faults suggests only similar to 16 km and similar to 25 km of left-lateral slip, respectively. Both the Batang and Xialaxiu faults demonstrate clear evidence for normal dip slip, by an associated series of E-W-trending grabens and horsts that absorb similar to 9 km of left-lateral movement in early to middle Pleistocene time. About 32 km of left-lateral movement on the fault system was estimated to be absorbed by NE-SW shortening along the rugged North Yushu block in late Neogene time. This is interpreted to have formed as a rhomb-shaped restraining bend, along which the left-lateral movement along the northwestern end of the fault system was partially transferred into crustal shortening.
WOS关键词	ACTIVE TECTONICS ; CONTINENTAL DEFORMATION ; EXTRUSION TECTONICS ; COLLISION ZONE ; RED-RIVER ; SLIP-RATE ; CHINA ; ASIA ; YUNNAN ; INDIA
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC AMER, INC
WOS记录号	WOS:000253750900004
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/69832]
专题	中国科学院地质与地球物理研究所
通讯作者	Wang, Shifeng
作者单位	1.Chinese Acad Sci, Key Lab Lithosphere Tecton Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shifeng,Fan, Chun,Wang, Gang,et al. Late Cenozoic deformation along the northwestern continuation of the Xianshuihe fault system, Eastern Tibetan Plateau[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2008,120(3-4):312-327.
APA	Wang, Shifeng,Fan, Chun,Wang, Gang,&Wang, Erchie.(2008).Late Cenozoic deformation along the northwestern continuation of the Xianshuihe fault system, Eastern Tibetan Plateau.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,120(3-4),312-327.
MLA	Wang, Shifeng,et al."Late Cenozoic deformation along the northwestern continuation of the Xianshuihe fault system, Eastern Tibetan Plateau".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 120.3-4(2008):312-327.