中文版 | English
Title

Crustal and Upper Mantle Velocity Structure of SE Tibet From Joint Inversion of Rayleigh Wave Phase Velocity and Teleseismic Body Wave Data

Author
Corresponding AuthorLuo,Yinhe; Yang,Yingjie
Publication Years
2023-07-01
DOI
Source Title
ISSN
2169-9313
EISSN
2169-9356
Volume128Issue:7
Abstract
Since the continental collision between the Indian and Eurasian plates began about 50 Ma ago, southeastern Tibet (SET) has undergone complex tectonic deformation. In this study, we investigate fine scale structural features of the crustal and upper mantle depths (<250 km) beneath SET, which hold important clues to understanding the dynamic processes related to this collision. A 3D shear velocity model is constructed through jointly inverting Rayleigh wave phase velocity and teleseismic body wave data from more than 650 stations. Our 3D model identifies three independent low-velocity zones (LVZs) in the mid-lower crust with unprecedented details. More specifically, we observe a prominent LVZ beneath the North Chuan-Dian Block, which is well separated from another LVZ beneath the Tengchong volcano in the south. This LVZ beneath the volcano represents a focused magma reservoir in the crust whose origin is potentially linked to the mantle upwelling associated with the eastward subduction of the Indian plate. The third LVZ, observed around the Xiaojiang Fault, likely represents a separated and mechanically weak layer in the mid-lower crust due to the combined effects of regional crustal thickening under the southeastward plateau expansion, mantle upwelling, and shear heating of strike-slip faults. In the upper mantle, we observe strong velocity reductions both in localized areas beneath the Tibetan Plateau and the broad region south of 26°N. These low velocity anomalies are sitting above high velocity anomalies at deeper depths, suggesting their association with lithospheric thickening and delamination processes.
Keywords
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Corresponding
Funding Project
National Natural Science Foundation of China[41874058];National Natural Science Foundation of China[42074055];
WOS Research Area
Geochemistry & Geophysics
WOS Subject
Geochemistry & Geophysics
WOS Accession No
WOS:001031971400001
Publisher
ESI Research Field
GEOSCIENCES
Scopus EID
2-s2.0-85165488290
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/559883
DepartmentDepartment of Earth and Space Sciences
Affiliation
1.Hubei Subsurface Multi-scale Imaging Key Laboratory,School of Geophysics and Geomatics,China University of Geosciences,Wuhan,China
2.Research School of Earth Sciences,Australian National University,Canberra,Australia
3.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan,China
4.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,China
5.Department of Earth,Environmental and Planetary Sciences,Rice University,Houston,United States
6.Department of Earth Sciences and Southern California Earthquake Center,University of Southern California,Los Angeles,United States
Corresponding Author AffilicationDepartment of Earth and Space Sciences
Recommended Citation
GB/T 7714
Yang,Xiaozhou,Luo,Yinhe,Jiang,Chengxin,et al. Crustal and Upper Mantle Velocity Structure of SE Tibet From Joint Inversion of Rayleigh Wave Phase Velocity and Teleseismic Body Wave Data[J]. Journal of Geophysical Research: Solid Earth,2023,128(7).
APA
Yang,Xiaozhou,Luo,Yinhe,Jiang,Chengxin,Yang,Yingjie,Niu,Fenglin,&Li,Guoliang.(2023).Crustal and Upper Mantle Velocity Structure of SE Tibet From Joint Inversion of Rayleigh Wave Phase Velocity and Teleseismic Body Wave Data.Journal of Geophysical Research: Solid Earth,128(7).
MLA
Yang,Xiaozhou,et al."Crustal and Upper Mantle Velocity Structure of SE Tibet From Joint Inversion of Rayleigh Wave Phase Velocity and Teleseismic Body Wave Data".Journal of Geophysical Research: Solid Earth 128.7(2023).
Files in This Item:
There are no files associated with this item.
Related Services
Fulltext link
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Export to Excel
Export to Csv
Altmetrics Score
Google Scholar
Similar articles in Google Scholar
[Yang,Xiaozhou]'s Articles
[Luo,Yinhe]'s Articles
[Jiang,Chengxin]'s Articles
Baidu Scholar
Similar articles in Baidu Scholar
[Yang,Xiaozhou]'s Articles
[Luo,Yinhe]'s Articles
[Jiang,Chengxin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang,Xiaozhou]'s Articles
[Luo,Yinhe]'s Articles
[Jiang,Chengxin]'s Articles
Terms of Use
No data!
Social Bookmark/Share
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.