气候变化领域集成服务门户(CCPortal): Quaternary crustal reactivation of the southwestern Beishan, NW China: The Liuyuan sinistral transpressional duplex

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DOI	10.1016/j.tecto.2021.228758
	Quaternary crustal reactivation of the southwestern Beishan, NW China: The Liuyuan sinistral transpressional duplex
	Yang H.; Cunningham D.; Yang X.
发表日期	2021
ISSN	00401951
卷号	803
英文摘要	We report remote sensing evidence and reconnaissance field observations for an actively evolving transpressional duplex 150 km north of Tibet, in the southern Beishan region of western China. We analyze Landsat-8, Google Earth and SRTM-30 data to reveal active fault traces, kinematics, offset contacts and landforms, and the overall duplex geometry in an area of limited recorded seismicity compared to surrounding regions. Eight NE-striking faults transfer sinistral displacement between E-W bounding faults and accommodate N-S shortening by sinistral-reverse displacements that have tilted the internal duplex blocks. The potential moment magnitude of a surface-rupturing event on one fault, that displays a twenty km-long, 1–3 m-high surface scarp, is estimated to be 6.6. Our study adds to the growing body of evidence that suggests the Beishan is a region of subtly expressed, but widespread, continental interior, strike-slip reactivation at low strain rates - challenging the long-held view that the Beishan has anomalous crustal stability within the huge Indo-Eurasia deformation field. © 2021 Elsevier B.V.
英文关键词	Remote sensing; Bounding faults; Deformation field; Field observations; Growing bodies; Low strain rates; Moment magnitudes; Surrounding regions; Western China; Strain rate; crustal structure; Internet; Landsat; plate motion; plate tectonics; remote sensing; satellite data; satellite imagery; seismicity; Shuttle Radar Topography Mission; strike-slip fault; transpression; Beishan; China; Nei Monggol
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/208105
作者单位	State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, China; Department of Environmental Earth Science, Eastern Connecticut State University, Willimantic, CT, United States
推荐引用方式 GB/T 7714	Yang H.,Cunningham D.,Yang X.. Quaternary crustal reactivation of the southwestern Beishan, NW China: The Liuyuan sinistral transpressional duplex[J],2021,803.
APA	Yang H.,Cunningham D.,&Yang X..(2021).Quaternary crustal reactivation of the southwestern Beishan, NW China: The Liuyuan sinistral transpressional duplex.Tectonophysics,803.
MLA	Yang H.,et al."Quaternary crustal reactivation of the southwestern Beishan, NW China: The Liuyuan sinistral transpressional duplex".Tectonophysics 803(2021).