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Continental lithospheric subduction and intermediate-depth seismicity: Constraints from S-wave velocity structures in the Pamir and Hindu Kush

文献类型：期刊论文

作者Li, Wei1,2,3; Chen, Yun1,2; Yuan, Xiaohui4; Schurr, Bernd4; Mechie, James4; Oimahmadov, Ilhomjon5; Fu, Bihong6
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2018-01-15
卷号482页码:478-489
ISSN号0012-821X
关键词Pamir India-asia Collision Intermediate-depth Seismicity Crustal Subduction Surface Wave Tomography Stress-field
DOI10.1016/j.epsl.2017.11.031
文献子类Article
英文摘要The Pamir has experienced more intense deformation and shortening than Tibet, although it has a similar history of terrane accretion. Subduction as a primary way to accommodate lithospheric shortening beneath the Pamir has induced the intermediate-depth seismicity, which is rare in Tibet. Here we construct a 3D S-wave velocity model of the lithosphere beneath the Pamir by surface wave tomography using data of the TIPAGE (Tien Shan-Pamir Geodynamic program) and other seismic networks in the area. We imaged a large-scale low velocity anomaly in the crust at 20-50 km depth in the Pamir overlain by a high velocity anomaly at a depth shallower than 15 km. The high velocity anomalies colocate with exposed gneiss domes, which may imply a similar history of crustal deformation, partial melting and exhumation in the hinterland, as has occurred in the Himalaya/Tibet system. At mantle depths, where the intermediate-depth earthquakes are located, a low velocity zone is clearly observed extending to about 180 km and 150 km depth in the Hindu Kush and eastern Pamir, respectively. Moreover, the geometry of the low-velocity anomaly suggests that lower crustal material has been pulled down into the mantle by the subducting Asian and Indian lithospheric mantle beneath the Pamir and Hindu Kush, respectively. Metamorphic processes in the subducting lower crust may cause the intermediate-depth seismicity down to 150-180 km depth beneath the Pamir and Hindu Kush. We inverted focal mechanisms in the seismic zone for the stress field. Differences in the stress field between the upper and lower parts of the Indian slab imply that subduction and detachment of the Indian lithosphere might cause intense seismicity associated with the thermal shear instability in the deep Hindu Kush. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词SOUTHERN TIEN-SHAN ; UPPER-MANTLE ; BREAK-OFF ; TOMOGRAPHIC IMAGE ; TIBETAN PLATEAU ; CRUST ; REGION ; EARTHQUAKES ; BENEATH ; ZONE
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000423892400046
资助机构Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; Chinese Academy of Sciences(XDB18000000) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; DREAM project of MOST China(2016YFC0600402) ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; National Natural Science Foundation of China(41374063 ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; Deutsche Forschungsgemeinschaft (bundle TIPAGE)(PAK443) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214) ; 41372214)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82643]  
专题中国科学院地质与地球物理研究所
通讯作者Chen, Yun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Deutsch GeoForschungsZentrumGFZ, D-14473 Potsdam, Germany
5.Acad Sci Republ Tajikistan, Inst Geol Earthquake Engn & Seismol, Dushanbe 734063, Tajikistan
6.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100094, Peoples R China
推荐引用方式
GB/T 7714		 Li, Wei,Chen, Yun,Yuan, Xiaohui,et al. Continental lithospheric subduction and intermediate-depth seismicity: Constraints from S-wave velocity structures in the Pamir and Hindu Kush[J]. EARTH AND PLANETARY SCIENCE LETTERS,2018,482:478-489.
APA Li, Wei.,Chen, Yun.,Yuan, Xiaohui.,Schurr, Bernd.,Mechie, James.,...&Fu, Bihong.(2018).Continental lithospheric subduction and intermediate-depth seismicity: Constraints from S-wave velocity structures in the Pamir and Hindu Kush.EARTH AND PLANETARY SCIENCE LETTERS,482,478-489.
MLA Li, Wei,et al."Continental lithospheric subduction and intermediate-depth seismicity: Constraints from S-wave velocity structures in the Pamir and Hindu Kush".EARTH AND PLANETARY SCIENCE LETTERS 482(2018):478-489.

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来源：地质与地球物理研究所

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