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| DOI | 10.1016/j.gr.2023.03.029 |
| Crustal structure of the Tibetan Plateau and adjacent areas revealed from ambient noise tomography | |
| Tan, Ping; Liang, Xiaofeng; Li, Wei; Wu, Chenglong | |
| 发表日期 | 2023 |
| ISSN | 1342-937X |
| EISSN | 1878-0571 |
| 起始页码 | 1 |
| 结束页码 | 15 |
| 卷号 | 121 |
| 英文摘要 | How the Tibetan Plateau deformed in the Indian-Eurasian continental collision has been long debated, more specifically, over the relationship between the deep processes and surface structural complexity. Here, we use ambient noise tomography to obtain a high-resolution crustal S-wave velocity model beneath the Tibetan Plateau and adjacent areas involving a comprehensive dataset from over 500 sta-tions. Our images reveal that the crustal flow should be in a limited scale according to the intermittent low-velocity zones (LVZs) observed in the middle crust at 20-40-km depth of the Tibetan Plateau. The distributions and strengths of LVZs further imply that different deep processes promote the surface defor-mation in various regions of the Tibetan Plateau. The LVZs in the northern plateau, collocated potassic magmatism and low velocity anomalies in the upper mantle, should be originated from the lithospheric delamination. However, in the southern plateau, the S-wave velocity showed an apparent lateral segmen-tation feature correlated with the north-south trending rifts. The feature indicates that the LVZs were likely controlled by the lateral tearing of the subducted Indian mantle lithosphere, which promotes the rifting deformation. Moreover, the LVZ in the central Tibet should have contributed to the formation of the conjugate strike-slip fault system. In the Tarim Basin, our model showed a high-velocity anomaly in the lower crust that may be related to ancient mantle plume activity. (c) 2023 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| 关键词 | Ambient noise tomographyTibetan PlateauTarim BasinCrustal structures |
| 英文关键词 | VELOCITY STRUCTURE BENEATH; INDIAN LITHOSPHERIC SLAB; SURFACE-WAVE DISPERSION; LARGE IGNEOUS PROVINCE; SOUTHERN TIBET; UPPER-MANTLE; RADIAL ANISOTROPY; TARIM BASIN; SE TIBET; OBLIQUE CONVERGENCE |
| WOS研究方向 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000984536600001 |
| 来源期刊 | GONDWANA RESEARCH
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/283589 |
| 作者单位 | China Earthquake Administration; Institute of Disaster Prevention, CEA; Chinese Academy of Sciences; Institute of Geology & Geophysics, CAS; China University of Geosciences - Wuhan; Chinese Academy of Sciences; Institute of Geology & Geophysics, CAS |
| 推荐引用方式 GB/T 7714 | Tan, Ping,Liang, Xiaofeng,Li, Wei,et al. Crustal structure of the Tibetan Plateau and adjacent areas revealed from ambient noise tomography[J],2023,121. |
| APA | Tan, Ping,Liang, Xiaofeng,Li, Wei,&Wu, Chenglong.(2023).Crustal structure of the Tibetan Plateau and adjacent areas revealed from ambient noise tomography.GONDWANA RESEARCH,121. |
| MLA | Tan, Ping,et al."Crustal structure of the Tibetan Plateau and adjacent areas revealed from ambient noise tomography".GONDWANA RESEARCH 121(2023). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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