Seismic tomography beneath the Dabie-Sulu collision orogen - 3-D velocity structures of lithosphere
文献类型：期刊论文
| 作者 | Xu, PF; Liu, FT; Wang, QC; Cong, BL; Chen, H; Sun, RM |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2000-05-01 |
| 卷号 | 43期号:3页码:377-+ |
| 关键词 | Dabie-Sulu orogenic belt seismic tomography 3-D velocity structure subducted Yangtze block slab breakoff |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | The 3-D velocity structures of the crust and upper mantle beneath the region of 112 degrees-124 degrees E, 28 degrees-39 degrees N including the Dabie-Sulu orogenic belt ape reconstructed by using seismic tomography. The results demonstrate that a significant lateral heterogeneity of velocity structures exists in the crust and upper mantle beneath the Dabie orogenic belt and a low velocity layer in the middle crust corresponds to extensional and nappe structures. Beneath the southern and northern Dabie tectonic units, the Moho depresses and a north-dipping high-velocity block, which corresponds to the ultralhigh-pressure metamorphic rocks, range from 6.5 to 6.6 km/s, was developed in the crust. In the uppermost mantle beneath the orogenic belt was developed the north-dipping high-velocity slab. Taking into account of geological and geochemistrical data, we inferred that the high-velocity slab is the remnants of ancient subducted Yangtze block. Seismic tomography reveals that the subducted Yangtze ancient block was broken off. In this paper we present tomographic images of the lithospheric velocity structure in details under the Dabie-Sulu orogenic belt, that such structures may be useful in associating geodynamic to surface-tectonic processes and is important in study of ancient orogenic belt. |
| WOS关键词 | CENTRAL CHINA ; SUBDUCTED SLABS ; TERRANE ; ROCKS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000087320900011 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/76013]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, PF |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, PF,Liu, FT,Wang, QC,et al. Seismic tomography beneath the Dabie-Sulu collision orogen - 3-D velocity structures of lithosphere[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2000,43(3):377-+. |
| APA | Xu, PF,Liu, FT,Wang, QC,Cong, BL,Chen, H,&Sun, RM.(2000).Seismic tomography beneath the Dabie-Sulu collision orogen - 3-D velocity structures of lithosphere.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,43(3),377-+. |
| MLA | Xu, PF,et al."Seismic tomography beneath the Dabie-Sulu collision orogen - 3-D velocity structures of lithosphere".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 43.3(2000):377-+. |
入库方式： OAI收割
来源：地质与地球物理研究所
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