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

CORC > 北京大学 > 地球与空间科学学院

	3D imaging of subducting and fragmenting Indian continental lithosphere beneath southern and central Tibet using body-wave finite-frequency tomography
	Liang, Xiaofeng ; Chen, Yun ; Tian, Xiaobo ; Chen, Yongshun John ; Ni, James ; Gallegos, Andrea ; Klemperer, Simon L. ; Wang, Minling ; Xu, Tao ; Sung, Changqing ; Si, Shaokun ; Lan, Haiqiang ; Teng, Jiwen
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2016
关键词	Indian continental lithosphere Tibetan plateau bodywave traveltime tomography subduction fragmentation upper mantle HIMALAYAN COLLISION ZONE MANTLE BENEATH LOWER CRUST SPLITTING MEASUREMENTS SEISMIC TOMOGRAPHY UPPERMOST MANTLE NORTHERN TIBET ARRIVAL TIMES PLATEAU DEFORMATION
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.; Chinese Academy of Sciences [XDB03010700]; National Natural Science Foundation of China [41404051, 41274066, 41374063, 41274090, 41574056]; NSF [EAR-0409870]; [Sinoprobe-02-03]; SCI(E); EI; ARTICLE; liangxf@mail.iggcas.ac.cn; 162-175; 443
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437199]
专题	地球与空间科学学院
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.
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.
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 (2016).