Lithospheric thickness and upper mantle anisotropy beneath the northeastern Tibetan Plateau
文献类型：期刊论文
| 作者 | Zhang Hong-Shuang1; Teng Ji-Wen2; Tian Xiao-Bo2; Zhang Zhong-Jie2; Gao Rui1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2013-02-01 |
| 卷号 | 56期号:2页码:459-471 |
| ISSN号 | 0001-5733 |
| 关键词 | Northeastern Tibetan Plateau S receiver function Lithosphere-Asthenosphere Boundary SKS splitting measurement Uppermost mantle deformation |
| DOI | 10.6038/cjg20130210 |
| 文献子类 | Article |
| 英文摘要 | We present S receiver functions and SKS splitting measurements from the China Seismograph Network located in the Qinghai and Gansu provinces. Teleseismic data are used to interpret the structure of the Lithosphere-Asthenosphere Boundary (LAB) and the upper mantle deformation beneath the northeastern Tibetan Plateau (NETP) in regions north of the east Kunlun fault. Based on our observations, the depth of the LAB is 125 similar to 135 km beneath the northeastern Songpan-Ganzi block and the west Qinling orogen, 145 similar to 175 km beneath the Kunlun and Qilian block, and deepens to the Qaidam basin (175 similar to 190 km), Ordos craton (1,70 km), and Alashan platform (200 km). The NETP has a nearly uniform fast wave direction of NW-SE. These observations are different from those to the south of the Kunlun fault which are rotating clockwise from the inner plateau. The difference between fast directions across the Kunlun fault implies a sudden variation of the upper mantle deformation occurred there. Shear wave splitting delay times vary from 0.8 to 1.9 s. And data from beneath regions north of the Kunlun-Ayimaqin suture showed that delay time was positively correlated with lithospheric thickness. This indicates that the anisotropy may develop in the uppermost mantle, such as the lithosphere, beneath the NETP. |
| WOS关键词 | NORTH CHINA CRATON ; ALTYN TAGH FAULT ; SEISMIC ANISOTROPY ; RECEIVER FUNCTIONS ; CRUSTAL STRUCTURE ; EASTERN CHINA ; MARGIN ; EVOLUTION ; GROWTH ; ZONE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000315762400010 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/86830]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang Hong-Shuang |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, Minist Land & Resources, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Hong-Shuang,Teng Ji-Wen,Tian Xiao-Bo,et al. Lithospheric thickness and upper mantle anisotropy beneath the northeastern Tibetan Plateau[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2013,56(2):459-471. |
| APA | Zhang Hong-Shuang,Teng Ji-Wen,Tian Xiao-Bo,Zhang Zhong-Jie,&Gao Rui.(2013).Lithospheric thickness and upper mantle anisotropy beneath the northeastern Tibetan Plateau.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,56(2),459-471. |
| MLA | Zhang Hong-Shuang,et al."Lithospheric thickness and upper mantle anisotropy beneath the northeastern Tibetan Plateau".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 56.2(2013):459-471. |
入库方式： OAI收割
来源：地质与地球物理研究所
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