气候变化领域集成服务门户(CCPortal): Tomographic imaging of the underthrusting Indian slab and mantle upwelling beneath central Tibet

CCPortal

DOI	10.1016/j.gr.2014.02.012
	Tomographic imaging of the underthrusting Indian slab and mantle upwelling beneath central Tibet
	Zhang, Heng; Zhao, Dapeng; Zhao, Junmeng; Liu, Hongbing
通讯作者	Zhang, H (通讯作者)
发表日期	2015
ISSN	1342-937X
EISSN	1878-0571
起始页码	121
结束页码	132
卷号	28 期号:1
英文摘要	To better understand the pattern of convergence between the Indian and Eurasian plates, we determine a high-resolution P-wave tomography of the crust and upper mantle under southern to central Tibet using a large number of high-quality data of local earthquakes and teleseismic events collected by the ANTILOPE-II and Hi-CLIMB projects. A significant low-velocity zone is detected above the northward underthrusting Indian slab beneath the Indus-Tsangpo suture, which may reflect fault zones or (incomplete) fragmentation as well as melts and/or fluids associated with the dehydration of the underthrusting Indian slab. The variations in the diving depth and extending distance of the Indian slab, under the ANTILOPE-II and Hi-CLIMB seismic profiles, may be caused by the differences in the viscosity contrast between the Indian slab and the surrounding mantle as well as strong structural heterogeneities in the upper mantle under the study region. Both high and low velocity anomalies are revealed in the mid- to lower crust under southern Tibet, which may reflect the complex pattern of crustal structure. The rifts in southern Tibet exhibit different velocity images, suggesting that different structures exist beneath those rifts. (C) 2014 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
关键词	WAVE VELOCITY STRUCTURE SOUTHERN TIBET P-WAVE LITHOSPHERE BENEATH CRUSTAL DEFORMATION TECTONIC EVOLUTION GRAVITY-ANOMALIES ELASTIC THICKNESS COLLISION ZONE HIMALAYA
英文关键词	Tomography; Rift zones; Subduction processes; Mantle dynamics; Tibetan plateau; Earthquakes
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000356743000007
来源期刊	GONDWANA RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258446
推荐引用方式 GB/T 7714	Zhang, Heng,Zhao, Dapeng,Zhao, Junmeng,et al. Tomographic imaging of the underthrusting Indian slab and mantle upwelling beneath central Tibet[J]. 中国科学院青藏高原研究所,2015,28(1).
APA	Zhang, Heng,Zhao, Dapeng,Zhao, Junmeng,&Liu, Hongbing.(2015).Tomographic imaging of the underthrusting Indian slab and mantle upwelling beneath central Tibet.GONDWANA RESEARCH,28(1).
MLA	Zhang, Heng,et al."Tomographic imaging of the underthrusting Indian slab and mantle upwelling beneath central Tibet".GONDWANA RESEARCH 28.1(2015).