Crustal structure and deformation beneath eastern and northeastern Tibet revealed by P-wave receiver functions

doi:10.1016/j.epsl.2018.06.007

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

	Crustal structure and deformation beneath eastern and northeastern Tibet revealed by P-wave receiver functions
	Wang, Xu 1,3; Chen, Ling 1,3,4; Ai, Yinshuang 2,3,4; Xu, Tao 1,4; Jiang, Mingming 2,4; Ling, Yuan 1,3; Gao, Yifan 1,3
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2018-09-01
卷号	497 页码:69-79
关键词	receiver function imaging eastern Tibet northeastern Tibet crustal structure crustal channel flow wedging tectonics
ISSN号	0012-821X
DOI	10.1016/j.epsl.2018.06.007
文献子类	Article
英文摘要	The present-day Tibetan crust records the shallow response of the Cenozoic continental collision between the Indian and Eurasian plates. An analysis of the deep crustal structure beneath eastern and northeastern Tibet is of vital significance for studying the geodynamic processes of crustal thickening and expansion of the Tibetan Plateau. We herein provide detailed images of the crustal structure of eastern and northeastern Tibet and the adjacent Sichuan Basin using teleseismic P-wave receiver function (P-RF) data from a NW-SE-trending linear seismic array. Our P-RF imaging result reveals distinct structural features of the study region, including marked lateral variations in the depth to basement beneath the SongpanGanzi block and the Sichuan Basin, a seismically slow mid-lower crust beneath the Songpan-Ganzi block and a low-velocity anomaly just above the Moho around the easternmost Kunlun fault area, and obvious Moho offsets near the boundaries of tectonics blocks. These structural features may reflect various crustal responses within the continental interior to the India-Eurasia collision at the plate margin. The rigid crust of the Sichuan Basin might have wedged into the Tibetan crust in the Longmenshan area, which probably facilitated crustal thickening and enabled channelized mid-lower crustal flow in the Songpan-Ganzi block to the west. Being a pre-existing tectonic boundary, the Kunlun fault could have acted as a focus of heating and hot mantle upwelling associated with the deep processes of the Indian plate underthrusting and subduction, possibly resulting in localized weakening and modification of the lower crust around this fault area. The observed significant differences in the crustal structure of eastern and northeastern Tibet suggest that crustal shortening in this region may have been absorbed by not only vertical thickening in the interiors of the tectonic blocks but also complex local deformation along the boundary zones. (C) 2018 Elsevier B.V. All rights reserved.
WOS关键词	KUNLUN FAULT ZONE ; NORTHERN TIBET ; LONGMEN-SHAN ; TECTONIC IMPLICATIONS ; POISSONS RATIO ; SICHUAN BASIN ; MOHO DEPTH ; NE TIBET ; PLATEAU ; CHINA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000440529100008
资助机构	National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; National Natural Science Foundation of China(41688103) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; International Partnership Program of the Chinese Academy of Sciences(GJHZ1776) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (SKL-Z201704-11712180) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (2011ZX05008-001) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03) ; (SinoProbe-02-03)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88153]
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	Chen, Ling
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xu,Chen, Ling,Ai, Yinshuang,et al. Crustal structure and deformation beneath eastern and northeastern Tibet revealed by P-wave receiver functions[J]. EARTH AND PLANETARY SCIENCE LETTERS,2018,497:69-79.
APA	Wang, Xu.,Chen, Ling.,Ai, Yinshuang.,Xu, Tao.,Jiang, Mingming.,...&Gao, Yifan.(2018).Crustal structure and deformation beneath eastern and northeastern Tibet revealed by P-wave receiver functions.EARTH AND PLANETARY SCIENCE LETTERS,497,69-79.
MLA	Wang, Xu,et al."Crustal structure and deformation beneath eastern and northeastern Tibet revealed by P-wave receiver functions".EARTH AND PLANETARY SCIENCE LETTERS 497(2018):69-79.