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| Crustal structure of the central Tibetan plateau and geological interpretation |
| Can Ge1, 2, 3, Youshun Sun3, M Nafi Toksoz3, Yingcai Zheng3, Yong Zheng1, Xiong Xiong1, Diming Yu3 |
1 State Key Laboratory of Geodesy and Earth Geodynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 Department of Earth, Atmosphere and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA |
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Abstract Based on teleseismic data obtained from 225 stations from two networks in the central Tibetan plateau, we have generated detailed crustal structure images using P-wave receiver function techniques with more accurate piercing-depth-correction and time-depth-correction than what have previously been available. Our images indicate an undulatory Moho beneath the Tibetan plateau with a steep jump beneath the northern Himalaya, and obviously different structures in proximity to the Bangong-Nujiang suture. In several sections of the Tibetan plateau, the lower crust is characterized by pervasive high-velocity regions, which are consistent with the preservation of eclogite bodies beneath the plateau, whose presence affects the dynamics of the Tibetan plateau.
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Received: 18 October 2012
Published: 10 December 2012
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| Fund:the project from China Earthquake Administration under grant 201308013 and the National Natural Science Foundation of China (Nos. 40974034, 41174086, 41074052, 41021003) |
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Corresponding Authors:
Can Ge
E-mail: gecan2008@gmail.com
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