Crustal structure beneath the northern part of the southeastern Tibetan Plateau revealed by a seismic dense nodal array
文献类型：期刊论文
| 作者 | Tan, Shunjia2,3,4; Tian, Xiaobo1,5; Zeng, Xiangzhi4; Nie, Fengjun2,3; Qu, Chen4; Yu, Changqing4 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 258页码:11 |
| 关键词 | Southeastern Tibetan Plateau Crustal structure image Dense nodal array Jinsha River Suture Yidun block |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2023.105593 |
| 英文摘要 | The continental convergence between the Indian and Eurasian plates in the Cenozoic not only caused the formation of the Tibetan Plateau (TP) but also pushed a large volume of continental lithosphere out of the plateau southeastwards. It has been strongly debated for many years how to transport mass from the central plateau to the southeastern TP. In the area between the central plateau and its southeastern margin, we deployed a southwest-northeast-trending dense seismic nodal array to record teleseismic waveforms. Receiver function methods were used to estimate the crustal bulk properties and to image the crustal structure. Our results show that the crustal thickness is approximately 60 km and the crustal average Vp/Vs ratio is approximately 1.78, which is less than the predicted values of the crustal channel flow model. In the crustal structure image, the Moho beneath the southwestern part of the profile dips northeast and extends below the Moho beneath the northeastern part of the profile. Beneath the southwestern part of the profile, a lower crustal northeast-dipping interface is also imaged, which is likely linked with the Jinsha River suture. Our results suggest that the most significant crustal thickening in the southeastern TP was produced by the northwards or northeastwards subduction of the Qiangtang block, which occurred in the late Oligocene to early Miocene, as indicated by palaeoaltimetric studies. This finding implies that the modern landform in the southeastern TP resulted from southeastwards block extrusion along strike-slip faults and more monsoonal precipitation and seasonal climate variation since 10 Ma. |
| WOS关键词 | EXPERIMENTAL DEFORMATION ; TECTONIC EVOLUTION ; EASTERN TIBET ; ANISOTROPIC TOMOGRAPHY ; SOUTHERN TIBET ; SE TIBET ; FLOW ; HIMALAYAN ; RIVER ; CONSTRAINTS |
| 资助项目 | National Natural Science Foundation of China[41941016] ; National Natural Science Foundation of China[42174123] ; National Natural Science Foundation of China[42030308] ; National Natural Science Foundation of China[41974053] ; Institute of Geology, Chinese Academy of Geological Sciences[J1901-26] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001121627700001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological 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 ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological 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 ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological 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 ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences ; Institute of Geology, Chinese Academy of Geological Sciences |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111527]  |
| 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 | Tian, Xiaobo; Yu, Changqing |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.East China Univ Technol, Nanchang 330013, Peoples R China 3.ECUT, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China 4.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan, Shunjia,Tian, Xiaobo,Zeng, Xiangzhi,et al. Crustal structure beneath the northern part of the southeastern Tibetan Plateau revealed by a seismic dense nodal array[J]. JOURNAL OF ASIAN EARTH SCIENCES,2023,258:11. |
| APA | Tan, Shunjia,Tian, Xiaobo,Zeng, Xiangzhi,Nie, Fengjun,Qu, Chen,&Yu, Changqing.(2023).Crustal structure beneath the northern part of the southeastern Tibetan Plateau revealed by a seismic dense nodal array.JOURNAL OF ASIAN EARTH SCIENCES,258,11. |
| MLA | Tan, Shunjia,et al."Crustal structure beneath the northern part of the southeastern Tibetan Plateau revealed by a seismic dense nodal array".JOURNAL OF ASIAN EARTH SCIENCES 258(2023):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
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