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New images of the crustal structure beneath eastern Tibet from a high-density seismic array

文献类型：期刊论文

作者Liu, Zhen1; Tian, Xiaobo1,2; Gao, Rui3; Wang, Gaochun1,4; Wu, Zhenbo5; Zhou, Beibei1,4; Tan, Ping1,4; Nie, Shitan1,4; Yu, Guiping1,4; Zhu, Gaohua6
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2017-12-05
卷号480页码:33-41
关键词East Margin Of Tibetan Plateau Receiver Function Crustal Structure Crustal Thickening Seismic Array
ISSN号0012-821X
DOI10.1016/j.epsl.2017.09.048
文献子类Article
英文摘要An east west trending, high-density seismic array was deployed along the eastern margin of the Tibetan Plateau to investigate its eastward expansion. The 160 km long array spans the Ruoergai basin, Minjiang fault, Minshan Mountains, Tazang fault, and West Qinling. The array included 330 short-period seismographs spaced at 500 m intervals, which recorded teleseismic 3-component waveforms over a one month period. P-wave receiver functions calculated from 35 teleseismic events provided an image of crustal structure. The results show a massive thrust nappe structure around the Minshan Mountains and beneath the Minjiang fault. We suggest that this nappe formed after the closure of the Paleo-Tethyan ocean. The resultant Triassic thrusting contributed to partial uplift of the eastern Ruoergai basin and the Minshan Mountains in middle-to-late Miocene time. Receiver function images show that the Tazang fault is a crustal-scale rupture cutting across the Moho. The western Tazang fault appears as a nearly vertical strike-slip fault accommodating left lateral shear at the terminus of the eastern Kunlun fault. After clockwise rotation from an approximate east west orientation to a nearly north south orientation, the eastern Tazang fault became a west-dipping thrust fault, which caused crustal thickening beneath the Minshan Mountains and the West Qinling. Our results suggest that late Cenozoic uplift of the eastern margin of the plateau is produced by eastward overthrusting and crustal shortening, processes that absorbed slip along the Tazang and Kunlun faults. (C) 2017 The Authors. Published by Elsevier B.V.
WOS关键词AMBIENT NOISE TOMOGRAPHY ; 2008 WENCHUAN EARTHQUAKE ; LOW-VELOCITY ZONE ; GARZE FOLD BELT ; KUNLUN FAULT ; NORTHEASTERN TIBET ; TECTONIC EVOLUTION ; SICHUAN BASIN ; LONGMEN SHAN ; NE TIBET
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000416881200004
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; 41574048) ; 41574048) ; 41574048) ; 41574048) ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; 41574048) ; 41574048) ; 41574048) ; 41574048) ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; 41574048) ; 41574048) ; 41574048) ; 41574048) ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; National Natural Science Foundation of China(41430213 ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; Chinese Academy of Sciences(XDB03010700) ; 41574048) ; 41574048) ; 41574048) ; 41574048)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82062]  
专题中国科学院地质与地球物理研究所
通讯作者Tian, Xiaobo
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chengdu Univ Technol, Coll Geophys, Chengdu 610059, Sichuan, Peoples R China
6.Chinese Univ Hong Kong, Earth Syst Sci Programme, Fac Sci, Hong Kong, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Zhen,Tian, Xiaobo,Gao, Rui,et al. New images of the crustal structure beneath eastern Tibet from a high-density seismic array[J]. EARTH AND PLANETARY SCIENCE LETTERS,2017,480:33-41.
APA Liu, Zhen.,Tian, Xiaobo.,Gao, Rui.,Wang, Gaochun.,Wu, Zhenbo.,...&Xu, Xiao.(2017).New images of the crustal structure beneath eastern Tibet from a high-density seismic array.EARTH AND PLANETARY SCIENCE LETTERS,480,33-41.
MLA Liu, Zhen,et al."New images of the crustal structure beneath eastern Tibet from a high-density seismic array".EARTH AND PLANETARY SCIENCE LETTERS 480(2017):33-41.

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来源：地质与地球物理研究所

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