Crust-mantle structure difference across the gravity gradient zone in North China Craton: Seismic image of the thinned continental crust
文献类型：期刊论文
| 作者 | Zheng, Tianyu; Chen, Ling; Zhao, Liang; Xu, Weiwei; Zhu, Rixiang |
| 刊名 | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
 |
| 出版日期 | 2006-11-01 |
| 卷号 | 159期号:1-2页码:43-58 |
| 关键词 | North China Craton receiver function imaging gravity modeling lower-crust thinning |
| ISSN号 | 0031-9201 |
| DOI | 10.1016/j.pepi.2006.05.004 |
| 文献子类 | Article |
| 英文摘要 | The Archean North China Craton (NCC) has been tectonically modified and lost its thick lithospheric keel during the Mesozoic and Cenozoic. The processes and mechanisms of the lithospheric modification and its appearance in and the relation between different subregions of the NCC are still poorly understood. Seismic data from 45 stations along a 470-km long profile cross the Bohai Bay Basin (BBB) and the Taihangshan Mountain Range (TMR) in the NCC were employed to construct a coherent structural image of the crust and uppermost mantle. An integrated receiver function imaging technique combining the common conversion point stacking approach with waveform inversion and forward modeling was proposed to extract the structural information beneath the study region. Modeling of Bouguer gravity anomalies was also applied to constrain the density distribution. The imaging result reveals distinct structural features between the mountain range and the basin area, and presents a picture of uneven crust thinning within the study region. In the east BBB the crust is significantly thinned due mainly to the reduction in the thickness of the lower crust including the crust-mantle transition zone, by up to similar to 12km. The west TMR, in contrast, is characterized by a relatively thick lower crust of similar to 20 km. The teleseismic waveform data and the gravity observation suggest a thicker crust and a buoyant mantle lithosphere beneath the TMR compared with the BBB. The contrasting crustal structural features appear coupled with the lithospheric processes and possibly reflect that different tectonic mechanisms and deformation regimes dominated the evolution of the two regions. The North-South Gravity Lineament, lying between the TMR and BBB, might represent a deep intra-continental boundary separating the NCC into topographically and tectonically different regions. (c) 2006 Elsevier B.V. All rights reserved. |
| WOS关键词 | SINO-KOREAN CRATON ; LITHOSPHERIC MANTLE ; MESOZOIC BASALTS ; EAST CHINA ; BENEATH ; EVOLUTION ; WAVES ; DEPTH ; KEEL ; GEOCHEMISTRY |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000241327000004 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67040]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zheng, Tianyu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Seismol Lab, SKLLE, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Palaeomagnetism & Geochron Lab, SKLLE, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Tianyu,Chen, Ling,Zhao, Liang,et al. Crust-mantle structure difference across the gravity gradient zone in North China Craton: Seismic image of the thinned continental crust[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2006,159(1-2):43-58. |
| APA | Zheng, Tianyu,Chen, Ling,Zhao, Liang,Xu, Weiwei,&Zhu, Rixiang.(2006).Crust-mantle structure difference across the gravity gradient zone in North China Craton: Seismic image of the thinned continental crust.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,159(1-2),43-58. |
| MLA | Zheng, Tianyu,et al."Crust-mantle structure difference across the gravity gradient zone in North China Craton: Seismic image of the thinned continental crust".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 159.1-2(2006):43-58. |
入库方式： OAI收割
来源：地质与地球物理研究所
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