Upper-mantle velocity structure beneath the North China Craton: implications for lithospheric thinning
文献类型：期刊论文
| 作者 | Xu, Peifen1; Zhao, Dapeng2 |
| 刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 出版日期 | 2009-06-01 |
| 卷号 | 177期号:3页码:1279-1283 |
| 关键词 | Seismic tomography Cratons Dynamics of lithosphere and mantle Asia |
| ISSN号 | 0956-540X |
| DOI | 10.1111/j.1365-246X.2009.04120.x |
| 文献子类 | Article |
| 英文摘要 | The presence of high-velocity lithospheric 'keels' in the upper mantle is a ubiquitous feature of stable continental provinces. However, the upper-mantle structure of the reactivated craton, whether all such high-velocity (high-V) keels are eventually removed and the mechanism of removal, remain unclear. In this work, we determine 3-D seismic velocity structure beneath the eastern part of the North China Craton and the surrounding regions, using a large number of data from local, regional and teleseismic events. Our results show that the upper-mantle high-V layer, which represents the lithosphere, is only 60-100 km thick beneath the Huabei Basin, whereas it is at least 150 km thick under Liaodong. Over 100-km thick high-V anomalies are visible atop the 410-km discontinuity and right beneath the lithospheric-thinning area. We interpret the high-V anomalies as the remnants of the delaminated lithosphere, which caused the lithospheric thinning under the eastern North China Craton. The most significant feature of our tomographric results is that the lithospheric delamination occurred in localized areas rather than the entire eastern North China Craton. It is an important observation that provides geophysical constraints on the delamination mechanism. |
| WOS关键词 | CONTINENTAL-CRUST ; XENOLITHS ; HANNUOBA ; DELAMINATION ; CONSTRAINTS ; EVOLUTION ; JAPAN |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000266025200035 |
| 出版者 | WILEY-BLACKWELL PUBLISHING, INC |
| 资助机构 | Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; National Natural Science Foundation of China(40374035) ; National Natural Science Foundation of China(40374035) ; Japan Society for the Promotion of Science(A-17204037) ; Japan Society for the Promotion of Science(A-17204037) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; National Natural Science Foundation of China(40374035) ; National Natural Science Foundation of China(40374035) ; Japan Society for the Promotion of Science(A-17204037) ; Japan Society for the Promotion of Science(A-17204037) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; National Natural Science Foundation of China(40374035) ; National Natural Science Foundation of China(40374035) ; Japan Society for the Promotion of Science(A-17204037) ; Japan Society for the Promotion of Science(A-17204037) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-103) ; National Natural Science Foundation of China(40374035) ; National Natural Science Foundation of China(40374035) ; Japan Society for the Promotion of Science(A-17204037) ; Japan Society for the Promotion of Science(A-17204037) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70684]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Xu, Peifen |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Study Earths Deep Interior, Beijing 100864, Peoples R China 2.Tohoku Univ, Dept Geophys, Sendai, Miyagi 9808578, Japan |
| 推荐引用方式 GB/T 7714 | Xu, Peifen,Zhao, Dapeng. Upper-mantle velocity structure beneath the North China Craton: implications for lithospheric thinning[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2009,177(3):1279-1283. |
| APA | Xu, Peifen,&Zhao, Dapeng.(2009).Upper-mantle velocity structure beneath the North China Craton: implications for lithospheric thinning.GEOPHYSICAL JOURNAL INTERNATIONAL,177(3),1279-1283. |
| MLA | Xu, Peifen,et al."Upper-mantle velocity structure beneath the North China Craton: implications for lithospheric thinning".GEOPHYSICAL JOURNAL INTERNATIONAL 177.3(2009):1279-1283. |
入库方式： OAI收割
来源：地质与地球物理研究所
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