Lateral Seismic Anisotropy Variations Record Interaction Between Tibetan Mantle Flow and Plume-Strengthened Yangtze Craton
文献类型：期刊论文
| 作者 | Li, Wei1,4; Chen, Yun1,4; Liang, Xiaofeng2,4; Xu, Yi-Gang1,3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 126期号:4页码:15 |
| 关键词 | ancient mantle plume Emeishan Large Igneous Province mantle flow seismic anisotropy southeastern Tibet S wave velocity |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2020JB020841 |
| 英文摘要 | The southeastern Tibetan Plateau experienced intense Cenozoic shortening and extrusion along the western Yangtze Craton, SW China, where the Permian Emeishan flood basalts were emplaced. Seismic anisotropy along a dense E-W-trending linear seismic array across the west Yunnan is determined by shear-wave splitting analysis to characterize the deformation associated with these processes. Interestingly, a strong N-S-oriented anisotropic zone collocated with the Eocene-Oligocene potassic magmatism is observed between two weak anisotropic zones in the Three-River Orogenic Zone and the western Yangtze Craton, respectively. The lateral anisotropy variation and distinct upper mantle structures collectively suggest that the western most Yangtze Craton, strengthened by the Permian mantle plume, acted as a rigid barrier to divert the Cenozoic Tibetan mantle flow into the Three-River Orogenic Zone. Consequently, the western edge of the Yangtze Craton has been partially eroded and its anisotropic orientation was realigned to the direction of the mantle flow. This observation indicates that both the remodeled anisotropy in the lithosphere and the dynamic flow in the asthenosphere contribute to the mantle anisotropy at the lateral lithosphere-asthenosphere transition, which is usually hard to seismologically resolve from the vertical lithosphere-asthenosphere boundary. |
| WOS关键词 | LARGE IGNEOUS PROVINCE ; GEODYNAMIC IMPLICATIONS BENEATH ; WAVE SPLITTING MEASUREMENTS ; VELOCITY STRUCTURE ; HEAT-FLOW ; PLATEAU ; CONSTRAINTS ; SUBDUCTION ; LITHOSPHERE ; DEFORMATION |
| 资助项目 | National Key R&D Program of China[2016YFC0600402] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000] ; National Natural Science Foundation of China[41804056] ; National Natural Science Foundation of China[41374063] ; National Natural Science Foundation of China[41574056] ; China Postdoctoral Science Foundation[2019M650034] ; China Postdoctoral Science Foundation[2020T130650] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000644658600021 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101246]  |
| 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 | Chen, Yun |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China 3.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wei,Chen, Yun,Liang, Xiaofeng,et al. Lateral Seismic Anisotropy Variations Record Interaction Between Tibetan Mantle Flow and Plume-Strengthened Yangtze Craton[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2021,126(4):15. |
| APA | Li, Wei,Chen, Yun,Liang, Xiaofeng,&Xu, Yi-Gang.(2021).Lateral Seismic Anisotropy Variations Record Interaction Between Tibetan Mantle Flow and Plume-Strengthened Yangtze Craton.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,126(4),15. |
| MLA | Li, Wei,et al."Lateral Seismic Anisotropy Variations Record Interaction Between Tibetan Mantle Flow and Plume-Strengthened Yangtze Craton".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 126.4(2021):15. |
入库方式： OAI收割
来源：地质与地球物理研究所
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