Nonuniform subduction of the Indian crust beneath the Himalayas

被引：43

作者：

Guo, Xiaoyu ^{[1
]}

Li, Wenhui ^{[2
]}

Gao, Rui ^{[1
,2
]}

Xu, Xiao ^{[1
]}

Li, Hongqiang ^{[2
]}

Huang, Xingfu ^{[1
]}

Ye, Zhuo ^{[2
]}

Lu, Zhanwu ^{[2
]}

Klemperer, Simon L. ^{[3
]}

机构：

[1] Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China

[2] Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China

[3] Stanford Univ, Dept Geophys, Stanford, CA 94305 USA

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

中国国家自然科学基金;

关键词：

TIBETAN PLATEAU; STRUCTURAL EVOLUTION; SOUTHERN TIBET; THRUST; SUTURE; UPLIFT; HISTORY; ZONE; RISE; FLOW;

D O I：

10.1038/s41598-017-12908-0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Himalayan tectonic activity is triggered by downward penetration of the Indian plate beneath the Asian plate. The subsurface geometry of this interaction has not been fully investigated. This study presents novel constraints on this geometry provided by two newly obtained, deep seismic reflection profiles. The profiles cover 100- and 60-km transects across the Yarlung-Zangbo suture of the Himalaya-Tibet orogen at c. 88 degrees E. Both profiles show a crustal-scale outline of the subducting Indian crust. This outline clearly shows Indian understhrusting southern Tibet, but only to a limited degree. When combined with a third seismic reflection profile of the western Himalayas, the new profiles reveal progressive, eastward steepening and shortening in the horizontal advance of the subducting Indian crust.

引用

页数：8

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