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Magmatic Underplating Thickening of the Crust of the Southern Tibetan Plateau Inferred From Receiver Function Analysis

文献类型：期刊论文

作者Liu, Zhen3; Tian, Xiaobo1,2; Liang, Xiaofeng1,2; Liang, Chuntao3; Li, Xin1,2
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2021-09-16
卷号48期号:17页码:10
关键词Tibetan Plateau crustal thickness magmatic underplating V-p V-s ratio receiver functions
ISSN号0094-8276
DOI10.1029/2021GL093754
英文摘要How the crust thickens to double the normal continental crust is a key issue in the formation of the Tibetan Plateau. Using data recorded by a new 2-D broadband seismic array, we extracted the crustal thicknesses and average V-P/V-S ratios in central Tibet from receiver functions. In our results, the crustal thicknesses increase southward, while the crustal average V-P/V-S ratios generally decrease southward. The lower V-P/V-S ratios in the crust seem to be produced by higher silica contents. We suggest that upper mantle magmas induced by the subduction of Indian lithospheric and Tethyan oceanic slabs underplating the overriding crust differentiate into felsic melts and mafic residues. Mafic residues delaminate into the mantle due to their high density, while felsic magmas are retained in the crust. As a result, crustal thickening in southern Tibet is accompanied by increasing silica contents.
WOS关键词INDIAN LITHOSPHERE BENEATH ; RISE ; COLLISION ; SUBDUCTION ; CALIFORNIA ; EVOLUTION ; SUTURE ; GROWTH
资助项目National Natural Science Foundation of China[42030308] ; National Natural Science Foundation of China[42074068] ; National Natural Science Foundation of China[41974053]
WOS研究方向Geology
语种英语
WOS记录号WOS:000694653200003
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/102643]  
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Tian, Xiaobo
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
3.Chengdu Univ Technol, Key Lab Earth Explorat & Informat Tech, China Minist Educ, Chengdu, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Zhen,Tian, Xiaobo,Liang, Xiaofeng,et al. Magmatic Underplating Thickening of the Crust of the Southern Tibetan Plateau Inferred From Receiver Function Analysis[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(17):10.
APA Liu, Zhen,Tian, Xiaobo,Liang, Xiaofeng,Liang, Chuntao,&Li, Xin.(2021).Magmatic Underplating Thickening of the Crust of the Southern Tibetan Plateau Inferred From Receiver Function Analysis.GEOPHYSICAL RESEARCH LETTERS,48(17),10.
MLA Liu, Zhen,et al."Magmatic Underplating Thickening of the Crust of the Southern Tibetan Plateau Inferred From Receiver Function Analysis".GEOPHYSICAL RESEARCH LETTERS 48.17(2021):10.

入库方式： OAI收割

来源：地质与地球物理研究所

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