3D imaging of subducting and fragmenting Indian continental lithosphere beneath southern and central Tibet using body-wave finite-frequency tomography

doi:10.1016/j.epsl.2016.03.029

	3D imaging of subducting and fragmenting Indian continental lithosphere beneath southern and central Tibet using body-wave finite-frequency tomography
	Liang, Xiaofeng 1; Chen, Yun 1; Tian, Xiaobo 1,2; Chen, Yongshun John 3; Ni, James 4; Gallegos, Andrea 4; Klemperer, Simon L.5; Wang, Minling 6; Xu, Tao 1,2; Sung, Changqing 7
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2016-06
卷号	443 页码:162-175
关键词	Indian continental lithosphere Tibetan plateau bodywave traveltime tomography subduction fragmentation upper mantle
ISSN号	0012-821X
DOI	10.1016/j.epsl.2016.03.029
英文摘要	We perform a finite-frequency tomographic inversion to image 3D velocity structures beneath southern and central Tibet using teleseismic body-wave data recorded by the TIBET-31N passive seismic array as well as waveforms from previous temporary seismic arrays. High-velocity bodies dip similar to 40 degrees northward beneath the Himalaya and the Lhasa Terrane. We interpret these high-velocity anomalies as subducting Indian Continental Lithosphere (ICL). The ICL appears to extend further north in central Tibet than in eastern Tibet, reaching 350 km depth at similar to 31 degrees N along 85 degrees E but at similar to 30 degrees N along 91 degrees E. Low P- and S-wave velocity anomalies extend from the lower crust to >= 180 km depth beneath the Tangra Yum Co Rift, Yadong-Gulu Rift, and the Cona Rift, suggesting that rifting in southern Tibet may involve the entire lithosphere. The anomaly beneath Tangra Yum Co Rift extends down to about 180 km, whereas the anomalies west of the Yadong-Gulu Rift and east of the Cona Rift extend to more than 300 km depth. The low-velocity upper mantle west of the Yadong-Gulu Rift extends furthest north and appears to connect with the extensive upper-mantle low-velocity region beneath central Tibet. Thus the northward-subducting Indian Plate is fragmented along north-south breaks that permit or induce asthenospheric upwellings indistinguishable from the upper mantle of northern Tibet. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	[Sinoprobe-02-03]
WOS关键词	HIMALAYAN COLLISION ZONE ; MANTLE BENEATH ; LOWER CRUST ; SPLITTING MEASUREMENTS ; SEISMIC TOMOGRAPHY ; UPPERMOST MANTLE ; NORTHERN TIBET ; ARRIVAL TIMES ; PLATEAU ; DEFORMATION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000375508800016
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24945]
专题	自然资源部第一海洋研究所
通讯作者	Liang, Xiaofeng
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.Peking Univ, Sch Earth & Space Sci, Inst Theoret & Appl Geophys, Beijing 100871, Peoples R China 4.New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA 5.Stanford Univ, Dept Geophys, Stanford, CA 94305 USA 6.Guilin Univ Technol, Coll Earth Sci, Guilin 541004, Peoples R China 7.China Earthquake Adm, Inst Crustal Dynam, Key Lab Crustal Dynam, Beijing 100085, Peoples R China 8.State Ocean Adm, Natl Deep Sea Ctr, Dept Invest, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Liang, Xiaofeng,Chen, Yun,Tian, Xiaobo,et al. 3D imaging of subducting and fragmenting Indian continental lithosphere beneath southern and central Tibet using body-wave finite-frequency tomography[J]. EARTH AND PLANETARY SCIENCE LETTERS,2016,443:162-175.
APA	Liang, Xiaofeng.,Chen, Yun.,Tian, Xiaobo.,Chen, Yongshun John.,Ni, James.,...&Teng, Jiwen.(2016).3D imaging of subducting and fragmenting Indian continental lithosphere beneath southern and central Tibet using body-wave finite-frequency tomography.EARTH AND PLANETARY SCIENCE LETTERS,443,162-175.
MLA	Liang, Xiaofeng,et al."3D imaging of subducting and fragmenting Indian continental lithosphere beneath southern and central Tibet using body-wave finite-frequency tomography".EARTH AND PLANETARY SCIENCE LETTERS 443(2016):162-175.