High-Resolution 3-D Shear Wave Velocity Model of the Tibetan Plateau: Implications for Crustal Deformation and Porphyry Cu Deposit Formation
文献类型：期刊论文
| 作者 | Huang, Shuye8; Yao, Huajian6,7,8; Lu, Zhanwu5; Tian, Xiaobo3,4; Zheng, Yong1,2; Wang, Rui1; Luo, Song8; Feng, Jikun8 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2020-07-01 |
| 卷号 | 125期号:7页码:17 |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2019JB019215 |
| 英文摘要 | The high topography of the Tibetan Plateau was generated by the Cenozoic India-Eurasia collision. A high-resolution shear wave velocity model can provide improved understanding of the Tibetan structure and crustal deformation with complicated tectonic evolution. Based on continuous seismic observations at approximately 400 stations, we collected over 10,000 Rayleigh wave phase velocity dispersion curves extracted from ambient noise cross-correlation functions. A direct surface wave inversion method was applied to obtain an S wave velocity model of the Tibetan crust. A heterogeneous structure including several prominent low-velocity zones (LVZs) and relatively narrow low-velocity bands connecting the LVZs is revealed. Our model shows significant crustal low-velocity structures with lateral variations along the Himalayan front. In the eastern segment of the Lhasa terrane, the LVZ is spatially correlated with Miocene porphyry Cu deposits, which are probably related to strong tearing of the Indian lithosphere, while preexisting weak zones contribute to the LVZs in the western segment. Meanwhile, the LVZ along the Bangong-Nujiang suture could be considered as a channel for eastward extrusion of ductile material, that is, crustal flow on geological timescales. This "flow" in the middle-lower crust probably contributed to the formation of the V-shaped conjugate strike-slip fault system in central Tibet. The development of conjugate strike-slip faults, however, ceased near 90 degrees E, since the eastward "flow" was blocked by an intracrustal high-velocity block in Amdo. This preexisting rigid zone (containing the Amdo microcontinent) hence influences the pattern of material transport inside the Tibetan crust and the deformation of the plateau. |
| WOS关键词 | AMBIENT SEISMIC NOISE ; STRUCTURE BENEATH ; SE TIBET ; CONTINENTAL COLLISION ; EASTWARD EXPANSION ; 2-STATION ANALYSIS ; ARRAY TOMOGRAPHY ; FLOW ; DISPERSION ; TECTONICS |
| 资助项目 | National Key Research and Development Program of China[2016YFC0600301] ; National Natural Science Foundation of China[41974053] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000577118900047 |
| 资助机构 | National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/98693]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Yao, Huajian |
| 作者单位 | 1.China Univ Geosci, Inst Earth Sci, State Key Lab Geol Proc & Mineral Resources, Beijing, Peoples R China 2.China Univ Geosci, Inst Geophys & Geomat, Wuhan, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 5.Chinese Acad Geol Sci, Inst Geol, Beijing, Peoples R China 6.Univ Sci & Technol China, Mengcheng Natl Geophys Observ, Mengcheng, Peoples R China 7.USTC, CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China 8.Univ Sci & Technol China, Sch Earth & Space Sci, Lab Seismol & Phys Earths Interior, Hefei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Shuye,Yao, Huajian,Lu, Zhanwu,et al. High-Resolution 3-D Shear Wave Velocity Model of the Tibetan Plateau: Implications for Crustal Deformation and Porphyry Cu Deposit Formation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2020,125(7):17. |
| APA | Huang, Shuye.,Yao, Huajian.,Lu, Zhanwu.,Tian, Xiaobo.,Zheng, Yong.,...&Feng, Jikun.(2020).High-Resolution 3-D Shear Wave Velocity Model of the Tibetan Plateau: Implications for Crustal Deformation and Porphyry Cu Deposit Formation.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,125(7),17. |
| MLA | Huang, Shuye,et al."High-Resolution 3-D Shear Wave Velocity Model of the Tibetan Plateau: Implications for Crustal Deformation and Porphyry Cu Deposit Formation".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 125.7(2020):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
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