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  2. 地质与地球物理研究所
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  4. 中国科学院地球与行星物理重点实验室
Indian continental lithosphere and related volcanism beneath Myanmar: Constraints from local earthquake tomography

文献类型：期刊论文

作者Zhang, Guangli2,4; He, Yumei2,3,4; Ai, Yinshuang2,3,4; Jiang, Mingming2,3,4; Mon, Chit Thet2,4,5; Hou, Guangbing2; Thant, Myo6,7; Sein, Kyaing1
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2021-08-01
卷号567页码:11
关键词continental collision Indian continental lithosphere local earthquake tomography Myanmar
ISSN号0012-821X
DOI10.1016/j.epsl.2021.116987
英文摘要The Indian plate descends obliquely eastward beneath the Eurasian plate along the Burmese arc. Previous tomographic results revealed a high-velocity structure that plunges eastward into the deep mantle beneath Myanmar. However, the shallow structure beneath Myanmar remains unclear due to the lack of local seismic observations. Based on the local seismic data recorded by a newly deployed dense array in Myanmar, we obtain a three-dimensional velocity structure of the crust and lithospheric mantle above 100 km by employing the double-difference tomography method. Our imaging results support the existence of the Indian continental lithosphere to a depth of at least 100 km with a dip angle of similar to 25 degrees beneath the Indo-Burma Ranges and the Central Myanmar Basin. At the deep end of the continental slab, the high V-P, high Vsand rather low average V-P/V-S ratio indicate that the lowermost portion of the crust from 80 to 120 km may have experienced partially metamorphic eclogitization. The imaging results also provide direct seismic evidence for the origin of the last Monywa volcanic activity in the Holocene. This subduction-related volcanism is characterized by a prominent low Vsanomaly in the lithospheric mantle, which indicates continental lithosphere dehydration and partial melting in mantle wedge. These findings provide new seismic constraints to understand the continental collision system between India and Eurasia under Myanmar and the related magmatic activities of the Monywa volcano. (C) 2021 Elsevier B.V. All rights reserved.
WOS关键词TIBETAN PLATEAU ; LOWER CRUST ; SUBDUCTION ; SLAB ; ECLOGITIZATION ; DELAMINATION ; MAGMATISM ; SOUTHERN ; SUMATRA
资助项目National Natural Science Foundation of China[91755214] ; National Natural Science Foundation of China[42030309] ; National Natural Science Foundation of China[41490612] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000] ; International Partnership Program of the Chinese Academy of Sciences[GJHZ1776]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000659467000003
出版者ELSEVIER
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 ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences ; International Partnership Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/102063]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者He, Yumei; Ai, Yinshuang
作者单位1.Myanmar Geosci Soc, Yangon, Myanmar
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Dagon Univ, Dept Geol, Yangon 11422, Myanmar
6.Yangon Univ, Dept Geol, Yangon 11041, Myanmar
7.Myanmar Earthquake Comm, Hlaing Univ Campus, Yangon 11052, Myanmar
推荐引用方式
GB/T 7714		 Zhang, Guangli,He, Yumei,Ai, Yinshuang,et al. Indian continental lithosphere and related volcanism beneath Myanmar: Constraints from local earthquake tomography[J]. EARTH AND PLANETARY SCIENCE LETTERS,2021,567:11.
APA Zhang, Guangli.,He, Yumei.,Ai, Yinshuang.,Jiang, Mingming.,Mon, Chit Thet.,...&Sein, Kyaing.(2021).Indian continental lithosphere and related volcanism beneath Myanmar: Constraints from local earthquake tomography.EARTH AND PLANETARY SCIENCE LETTERS,567,11.
MLA Zhang, Guangli,et al."Indian continental lithosphere and related volcanism beneath Myanmar: Constraints from local earthquake tomography".EARTH AND PLANETARY SCIENCE LETTERS 567(2021):11.

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来源：地质与地球物理研究所

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