气候变化领域集成服务门户(CCPortal): Temporally constant slip rate along the Ganzi fault, NW Xianshuihe fault system, eastern Tibet

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DOI	10.1130/B31691.1
	Temporally constant slip rate along the Ganzi fault, NW Xianshuihe fault system, eastern Tibet
	Chevalier M.-L.; Leloup P.H.; Replumaz A.; Pan J.; Métois M.; Li H.
发表日期	2018
ISSN	167606
起始页码	396
结束页码	410
卷号	130 期号:2021-03-04
英文摘要	The left-lateral strike-slip Xianshuihe fault system, located in eastern Tibet, is one of the most tectonically active intracontinental fault systems in China, if not in the world, along which more than 20 M > 6.5 earthquakes have occurred since A.D. 1700, including the 2010 Mw 6.9 Yushu earthquake. It is therefore essential to precisely determine its slip rate, which remains poorly constrained at all time scales, in order to evaluate regional earthquake hazard. Here, we focus on the NW segment of the Xianshuihe fault system, the Ganzi fault. We studied three sites where the active Ganzi fault cuts and left-laterally offsets moraine crests and fan edges. We constrained left-lateral offsets using light detection and ranging (LiDAR) and kinematic global positioning system (GPS) methods, and we used cosmogenic dating to determine the abandonment age of the offset surfaces. We found that the slip rate remains constant along the entire Ganzi fault (~300 km) at 6-8 mm/yr at the late Quaternary time scale, consistent with geodetic (interferometric synthetic aperture radar [InSAR] and GPS) as well as geologic slip rates (4.9-7.5 mm/ yr since ca. 12.6 Ma). This implies that the Manigango segment of the Ganzi fault could potentially produce a M 7.6 earthquake in the near future. While the Xianshuihe fault system propagated from west to east, the fact that the Ganzi fault's long-term slip rate is similar to that of the Xianshuihe fault to the SE suggests that the onset of the Xianshuihe fault system at ca. 13 Ma marked a major transition in tectonic regime in SE Tibet. © 2017 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185078
作者单位	Key Laboratory of Continental Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Road, Beijing, 100037, China; Laboratoire de Géologie de Lyon, CNRS UMR 5570, Université de Lyon 1, Villeurbanne, 69622, France; Institut des Sciences de la Terre (ISTerre), Université Grenoble Alpes, Grenoble, 38058, France
推荐引用方式 GB/T 7714	Chevalier M.-L.,Leloup P.H.,Replumaz A.,et al. Temporally constant slip rate along the Ganzi fault, NW Xianshuihe fault system, eastern Tibet[J],2018,130(2021-03-04).
APA	Chevalier M.-L.,Leloup P.H.,Replumaz A.,Pan J.,Métois M.,&Li H..(2018).Temporally constant slip rate along the Ganzi fault, NW Xianshuihe fault system, eastern Tibet.Bulletin of the Geological Society of America,130(2021-03-04).
MLA	Chevalier M.-L.,et al."Temporally constant slip rate along the Ganzi fault, NW Xianshuihe fault system, eastern Tibet".Bulletin of the Geological Society of America 130.2021-03-04(2018).