Late Quaternary Slip Behavior of the Jinqianghe Fault in the Middle Qilian-Haiyuan Fault Zone,Northeastern Tibetan Plateau

作     者：LIANG Shumin ZHENG Wenjun CHEN Gan ZHANG Peizhen ZHANG Dongli BI Haiyun YANG Xue ZHANG Yipeng DUAN Lei LU Bentian LIANG Shumin;ZHENG Wenjun;CHEN Gan;ZHANG Peizhen;ZHANG Dongli;BI Haiyun;YANG Xue;ZHANG Yipeng;DUAN Lei;LU Bentian

作者机构：Guangdong Provincial Key Laboratory of Geodynamics and GeohazardsSchool of Earth Sciences and EngineeringSun Yat–sen UniversityGuangzhou 510275China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)ZhuhaiGuangdong 519082China State Key Laboratory for Earthquake DynamicsInstitute of GeologyChina Earthquake AdministrationBeijing 100029China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2022年第96卷第3期

页      面：825-843页

核心收录：

学科分类：070904[理学-构造地质学] 070905[理学-第四纪地质学] 0709[理学-地质学] 07[理学] 

基　　金：This work was supported by the National Key Research and Development Program of China(Grant No.2017YFC1500100) the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(Grant No.2019QZKK0901) the National Science Foundation of China(Grant Nos.41774049,41972228,41874020) the Guangdong Province Introduced Innovative R&D Team of Geological Processes and Natural Disasters around the South China Sea(Grant No.2016ZT06N331) 

主　　题：remote sensing offset geomorphology cumulative offset distribution Qilian-Haiyuan fault zone 

摘      要：The Qilian-Haiyuan fault zone in the northeastern Tibetan Plateau has been the source of strong earthquakes in the *** its middle segment,the Jinqianghe fault is an important active fault within the Tianzhu seismic gap;however,little is known about its slip *** present a new horizontal displacement distribution along this fault,we used WorldView-2 stereo pairs and unmanned aerial vehicle-based photogrammetry to construct digital elevation models to obtain a detailed tectono-geomorphic interpretation and geomorphic *** offset marker measurements yielded 135 geomorphic displacements and 8 offset *** dating was used to establish the regional age sequence of the geomorphic units in offset fluvial terraces at four study *** displacements and ages linked the offset clusters with the geomorphic unit sequence;the Holocene strike-slip rate of the Jinqianghe fault was estimated to 4.8-5.6 mm/a at~4-12 ka and 2.9-4.7 mm/a from~4 *** recent earthquakes(with a recurrence interval of~1000 years)represent an active seismic period,revealing the potential seismic hazard along this fault because it has not ruptured in the last 1500 years.