Crustal deformation of the eastern Tibetan plateau revealed by magnetotelluric imaging
文献类型：期刊论文
| 作者 | Bai, Denghai1; Unsworth, Martyn J.2; Meju, Max A.3; Ma, Xiaobing1; Teng, Jiwen1; Kong, Xiangru1; Sun, Yi4; Sun, Jie5; Wang, Lifeng5; Jiang, Chaosong6 |
| 刊名 | NATURE GEOSCIENCE
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 3期号:5页码:358-362 |
| ISSN号 | 1752-0894 |
| DOI | 10.1038/NGEO830 |
| 文献子类 | Article |
| 英文摘要 | The ongoing collision of the Indian and Asian continents has created the Himalaya and Tibetan plateau through a range of deformation processes. These include crustal thickening, detachment of the lower lithosphere from the plate (delamination) and flow in a weakened lower crust(1-6). Debate continues as to which of these processes are most significant(7). In eastern Tibet, large-scale motion of the surface occurs, but the nature of deformation at depth remains unresolved. A large-scale crustal flow channel has been proposed as an explanation for regional uplift in eastern Tibet(6,8,9), but existing geophysical data(10,11) do not constrain the pattern of flow. Magnetotellurics uses naturally occurring electromagnetic waves to image the Earth's subsurface. Here we present magnetotelluric data that image two major zones or channels of high electrical conductivity at a depth of 20-40 km. The channels extend horizontally more than 800 km from the Tibetan plateau into southwest China. The electrical properties of the channels imply an elevated fluid content consistent with a weak crust(12,13) that permits flow on a geological timescale. These findings support the hypothesis that crustal flow can occur in orogenic belts and contribute to uplift of plateaux. Our results reveal the previously unknown complexities of these patterns of crustal flow. |
| WOS关键词 | COLLISION ZONE ; SOUTHERN TIBET ; UPPER-MANTLE ; FLOW ; ASIA ; CONSTRAINTS ; FLUIDS ; INDIA ; BELT |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000277188500021 |
| 出版者 | NATURE PUBLISHING GROUP |
| 资助机构 | China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; 40374034) ; 40374034) ; 40374034) ; 40374034) ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; 40374034) ; 40374034) ; 40374034) ; 40374034) ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; 40374034) ; 40374034) ; 40374034) ; 40374034) ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; China National Science Foundation(40634025 ; 40374034) ; 40374034) ; 40374034) ; 40374034) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/72078]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Bai, Denghai |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada 3.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England 4.Dalian Univ Technol, Dalian 116024, Peoples R China 5.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China 6.Earthquake Adm Yunnan Prov, Kunming 650041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Denghai,Unsworth, Martyn J.,Meju, Max A.,et al. Crustal deformation of the eastern Tibetan plateau revealed by magnetotelluric imaging[J]. NATURE GEOSCIENCE,2010,3(5):358-362. |
| APA | Bai, Denghai.,Unsworth, Martyn J..,Meju, Max A..,Ma, Xiaobing.,Teng, Jiwen.,...&Liu, Mei.(2010).Crustal deformation of the eastern Tibetan plateau revealed by magnetotelluric imaging.NATURE GEOSCIENCE,3(5),358-362. |
| MLA | Bai, Denghai,et al."Crustal deformation of the eastern Tibetan plateau revealed by magnetotelluric imaging".NATURE GEOSCIENCE 3.5(2010):358-362. |
入库方式： OAI收割
来源：地质与地球物理研究所
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