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DOI	10.1016/j.tecto.2020.228545
	Quantification of the late Quaternary throw rates along the Yadong rift, southern Tibet
	Wang S.; Chevalier M.-L.; Pan J.; Bai M.; Li K.; Li H.; Wang G.
发表日期	2020
ISSN	00401951
卷号	790
英文摘要	Southern Tibet is characterized by seven main N-S trending rifts bounded by normal faults which accommodate E-W extension. Quantifying the throw and extension rates along these rifts is essential to understand their activity, onset timing, regional seismic hazard and kinematic role in the tectonic evolution of the Tibetan Plateau. The Yadong-Gulu rift (YGR), near Lhasa, is the longest and most prominent rift in southern Tibet, and one of the few that crosses the Himalayas, however it remains poorly studied and understood. Here, we focus on the Yadong rift, i.e., the southern section of the YGR, south of the Yarlung Zangbo suture. We determine the late Quaternary/Holocene throw rates at four sites, where the active Yadong normal fault vertically offsets glacial and fluvial geomorphic surfaces. Using terrestrial LiDAR, UAV and kinematic GPS, we precisely measured vertical offsets (up to 17 m) and constrained the age of abandoned surfaces using 32 10Be cosmogenic surface-exposure ages (~10–20 ka), one optically stimulated luminescence age and two travertine samples dated using U-series dating. The offset-age reconstructions yield uniform throw rates of 0.9 ± 0.3 mm/yr along the entire Yadong rift. Taking a fault dip of 50° as measured in the field, we obtain late Quaternary E-W extension rates of 0.8 ± 0.3 mm/yr, which is similar to but at the lower end of those along other rifts in southern Tibet (~1–2 mm/yr). © 2020 Elsevier B.V.
关键词	Active tectonics Cosmogenic isotope dating Extension rate Southern Tibet Throw rate Yadong rift
英文关键词	Kinematics; Luminescence; Extension rates; Optically stimulated luminescence; Seismic hazards; Surface exposure age; Tectonic evolution; Terrestrial lidars; Tibetan Plateau; U-series dating; Fault slips; geochronology; geomorphology; kinematics; Quaternary; remote sensing; rift zone; seismic hazard; tectonic evolution; China; Xizang; Yadong
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/207895
作者单位	School of Earth Sciences and Resources, China University of Geosciences, 29 Xueyuan Rd, Beijing, Beijing 100083, China; Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources, Institute of Geology, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Rd, Beijing, 100037, China
推荐引用方式 GB/T 7714	Wang S.,Chevalier M.-L.,Pan J.,et al. Quantification of the late Quaternary throw rates along the Yadong rift, southern Tibet[J],2020,790.
APA	Wang S..,Chevalier M.-L..,Pan J..,Bai M..,Li K..,...&Wang G..(2020).Quantification of the late Quaternary throw rates along the Yadong rift, southern Tibet.Tectonophysics,790.
MLA	Wang S.,et al."Quantification of the late Quaternary throw rates along the Yadong rift, southern Tibet".Tectonophysics 790(2020).