Vertical crustal motions across Eastern Tibet revealed by topography-dependent seismic tomography

doi:10.1038/s41598-017-03578-z

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Vertical crustal motions across Eastern Tibet revealed by topography-dependent seismic tomography
	Zhang, Xinyan 1; Wang, Yanghua 2; Gao, Rui 1,3; Xu, Tao 4; Bai, Zhiming 4; Tian, Xiaobo 4; Li, Qiusheng 1
刊名	SCIENTIFIC REPORTS
	2017-06-12
卷号	7
ISSN号	2045-2322
DOI	10.1038/s41598-017-03578-z
文献子类	Article
英文摘要	Using a topography-dependent tomographic scheme, the seismic velocity structure of the Eastern Tibetan Plateau, including the uplifted Longmenshan (LMS) orogenic belt, is accurately imaged in spite of the extreme topographic relief in the LMS region and thick sedimentary covers in the neighbouring Sichuan Basin. The obtained image shows a high-resolution upper crustal structure on a 500 km-long profile that is perpendicular to the LMS. The image clearly shows that the crystalline basement was uplifted within the LMS orogenic belt, and that the neighbouring Songpan-Ganzi Terrane was covered by a thick flysch belt, with evidence of near-surface thrust faults caused by convergence between Eastern Tibet and the Sichuan Basin. The indication that the lower crust beneath the LMS was folded and pushed upwards and the upper crust was removed by exhumation, supports the concept of a lower crustal channel flow beneath Eastern Tibet. The image also reveals that the destructive Wenchuan earthquake of year 2008 occurred in the upper crust, directly at the structural discontinuity between Eastern Tibet Plateau and the Sichuan Basin.
WOS关键词	1ST-ARRIVAL TRAVEL-TIMES ; LONGMEN SHAN RANGE ; CONTINENTAL COLLISION ; EIKONAL EQUATION ; PLATEAU ; FLOW ; ASIA ; TECTONICS ; BENEATH ; MODELS
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000403081900034
资助机构	CEA(201408023) ; National Natural Science Foundation of China(41604075 ; 41574092 ; 41430213 ; 41474111 ; 41374062) ; CEA(201408023) ; National Natural Science Foundation of China(41604075 ; 41574092 ; 41430213 ; 41474111 ; 41374062) ; CEA(201408023) ; National Natural Science Foundation of China(41604075 ; 41574092 ; 41430213 ; 41474111 ; 41374062) ; CEA(201408023) ; National Natural Science Foundation of China(41604075 ; 41574092 ; 41430213 ; 41474111 ; 41374062)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/52863]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Wang, Yanghua
作者单位	1.Chinese Acad Geol Sci, Inst Geol, MLR Key Lab Earthprobe & Geodynam, Beijing 100037, Peoples R China 2.Imperial Coll, Dept Earth Sci & Engn, London SW7 2BP, England 3.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xinyan,Wang, Yanghua,Gao, Rui,et al. Vertical crustal motions across Eastern Tibet revealed by topography-dependent seismic tomography[J]. SCIENTIFIC REPORTS,2017,7.
APA	Zhang, Xinyan.,Wang, Yanghua.,Gao, Rui.,Xu, Tao.,Bai, Zhiming.,...&Li, Qiusheng.(2017).Vertical crustal motions across Eastern Tibet revealed by topography-dependent seismic tomography.SCIENTIFIC REPORTS,7.
MLA	Zhang, Xinyan,et al."Vertical crustal motions across Eastern Tibet revealed by topography-dependent seismic tomography".SCIENTIFIC REPORTS 7(2017).