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Crustal structure across the Three Gorges area of the Yangtze platform, central China, from seismic refraction/wide-angle reflection data

文献类型：期刊论文

作者Zhang, Zhongjie1; Bai, Zhiming1; Mooney, Walter2; Wang, Chunyong3; Chen, Xuebo4; Wang, Erchie1; Teng, Jiwen1; Okaya, Nihal2
刊名TECTONOPHYSICS
出版日期2009-10-01
卷号475期号:3-4页码:423-437
关键词Yangtze platform Zigui basin Huangling dome Jianghan basin P-wave velocities Composition
ISSN号0040-1951
DOI10.1016/j.tecto.2009.05.022
文献子类Article
英文摘要We present active-source seismic data recorded along a 300 km-long profile across the Three Gorges area of the western Yangtze platform, central China. From west to east, the profile crosses the Zigui basin, Huangling dome and Jianghan basin. The derived crustal P-wave velocity structure changes significantly across the Tongchenghe fault that lies at the transition from the Huangling dome to the Jianghan basin. West of the Tongchenghe fault, beneath the Zigui basin and the Huangling dome, we observe a similar to 42 km thick crust of relatively low average velocity (6.3-6.4 km/s). In contrast, east of the Tongchenghe fault. beneath the Jianghan basin, the crust is only 30 km thick and has a high average velocity (6.6-6.7 km/s). A west-east variation in crustal composition along the Tongchenghe fault is also inferred. West of the fault, P-wave velocities suggest a felsic composition with an intermediate layer at the base of the crust, whilst, east of the fault, felsic, intermediate, and mafic crustal layers are apparent. Our results suggest that the crust beneath the Jianghan basin has been thinned by rifting, accompanied by intrusion of the lower crust by mafic dikes and sills. The west-to-east division of the crust in the Three Gorges area coincides with first-order geophysical contrasts in gravity, topography, crustal and lithospheric thickness. (C) 2009 Elsevier B.V. All rights reserved.
WOS关键词FINITE-DIFFERENCE CALCULATION ; SOUTH CHINA ; TECTONIC EVOLUTION ; VELOCITY STRUCTURE ; CONTINENTAL-CRUST ; BASIN DEVELOPMENT ; TIBETAN PLATEAU ; EASTERN CHINA ; SOUNDING DATA ; KENYA RIFT
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000273524100002
出版者ELSEVIER SCIENCE BV
资助机构Chinese Academy of Sciences(KZCX2-YW-132) ; Chinese Academy of Sciences(KZCX2-YW-132) ; National Nature Science Foundation of China(40721003 ; National Nature Science Foundation of China(40721003 ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; 40830315) ; 40830315) ; Chinese Academy of Sciences(KZCX2-YW-132) ; Chinese Academy of Sciences(KZCX2-YW-132) ; National Nature Science Foundation of China(40721003 ; National Nature Science Foundation of China(40721003 ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; 40830315) ; 40830315) ; Chinese Academy of Sciences(KZCX2-YW-132) ; Chinese Academy of Sciences(KZCX2-YW-132) ; National Nature Science Foundation of China(40721003 ; National Nature Science Foundation of China(40721003 ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; 40830315) ; 40830315) ; Chinese Academy of Sciences(KZCX2-YW-132) ; Chinese Academy of Sciences(KZCX2-YW-132) ; National Nature Science Foundation of China(40721003 ; National Nature Science Foundation of China(40721003 ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; 40830315) ; 40830315)
源URL[http://ir.iggcas.ac.cn/handle/132A11/71326]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Zhongjie
作者单位1.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.USGS, Menlo Pk, CA 94025 USA
3.China Earthquake Adm, Inst Geophys, Beijing 100080, Peoples R China
4.China Earthquake Adm, Inst Dynam Deformat, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Zhongjie,Bai, Zhiming,Mooney, Walter,et al. Crustal structure across the Three Gorges area of the Yangtze platform, central China, from seismic refraction/wide-angle reflection data[J]. TECTONOPHYSICS,2009,475(3-4):423-437.
APA Zhang, Zhongjie.,Bai, Zhiming.,Mooney, Walter.,Wang, Chunyong.,Chen, Xuebo.,...&Okaya, Nihal.(2009).Crustal structure across the Three Gorges area of the Yangtze platform, central China, from seismic refraction/wide-angle reflection data.TECTONOPHYSICS,475(3-4),423-437.
MLA Zhang, Zhongjie,et al."Crustal structure across the Three Gorges area of the Yangtze platform, central China, from seismic refraction/wide-angle reflection data".TECTONOPHYSICS 475.3-4(2009):423-437.

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