Underplating in the Himalaya-Tibet Collision Zone Revealed by the Hi-CLIMB Experiment

被引：743

作者：

Nabelek, John ^{[1
]}

Hetenyi, Gyoergy ^{[2
]}

Vergne, Jerome ^{[2
]}

Sapkota, Soma ^{[3
]}

Kafle, Basant ^{[3
]}

Jiang, Mei ^{[4
]}

Su, Heping ^{[4
]}

Chen, John ^{[5
]}

Huang, Bor-Shouh ^{[6
]}

机构：

[1] Oregon State Univ, Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA

[2] Ecole Normale Super, CNRS, Geol Lab, UMR 8538, F-75005 Paris, France

[3] Natl Seismol Ctr, Dept Mines & Geol, Kathmandu, Nepal

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

[5] Peking Univ, Inst Theoret & Appl Geophys, Beijing 100871, Peoples R China

[6] Acad Sinica, Inst Earth Sci, Taipei 115, Taiwan

来源：

SCIENCE | 2009年 / 325卷 / 5946期

关键词：

INDIAN LITHOSPHERE BENEATH; SOUTHERN TIBET; GRAVITY-ANOMALIES; MIDDLE CRUST; PLATEAU; MANTLE; SUBDUCTION; NEPAL; VELOCITIES; WAVES;

D O I：

10.1126/science.1167719

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：

We studied the formation of the Himalayan mountain range and the Tibetan Plateau by investigating their lithospheric structure. Using an 800-kilometer-long, densely spaced seismic array, we have constructed an image of the crust and upper mantle beneath the Himalayas and the southern Tibetan Plateau. The image reveals in a continuous fashion the Main Himalayan thrust fault as it extends from a shallow depth under Nepal to the mid-crust under southern Tibet. Indian crust can be traced to 31 degrees N. The crust/mantle interface beneath Tibet is anisotropic, indicating shearing during its formation. The dipping mantle fabric suggests that the Indian mantle is subducting in a diffuse fashion along several evolving subparallel structures.

引用

页码：1371 / 1374

页数：4

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