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Structure of the crust and uppermost mantle from broadband seismic array in the western Dabie Mountains, east central China

文献类型：期刊论文

作者Li Hua1; Wang LiangShu1; Li Cheng1; Liu FuTian2; Hu DeZhao1; Yu DaYong1
刊名SCIENCE IN CHINA SERIES D-EARTH SCIENCES
出版日期2009-02-01
卷号52期号:2页码:203-212
关键词Dabie Mountains receiver functions S-wave velocity lithosphere structure
ISSN号1006-9313
DOI10.1007/s11430-009-0017-z
文献子类Article
英文摘要A broadband seismic array of 7 stations was set up in the western Dabie Mountains (31A degrees 20'aEuro"31A degrees 50'N, 114A degrees 30'aEuro"115A degrees E). Teleseismic events from May 2001 to November 2001 were collected and analyzed by radial receiver function to determine the S-wave velocity structure of the crust and uppermost mantle. The crustal thickness is 32-38 km beneath the array. The crust-mantle boundary appears as a gently north-dipping velocity discontinuity, but turns to be a velocity gradient beneath a station near the Qiliping shear zone in the south of the array. In the north of the array, a large offset of 4-6 km exists in the Moho along the Tongbai-Tongcheng shear zone, suggesting a suture zone formed by the northward subduction of the Yangtze plate beneath the North China plate. Along the Tongbai-Tongcheng shear zone, a north-dipping, EW-striking low-velocity zone was observed in the upper mantle, which may be related to the collision boundary between the Yangtze and the North China plates in the Triassic. Therefore the Tongbai-Tongcheng shear zone is the southern boundary of suture zone between the Yangtze and the North China plates. In the south of the array, a high-velocity body in the lower crust near the Qiliping shear zone probably results from the underplate of mafic magma into the lower crust, which is generally associated with large-scale extension triggered by delamination of the thickened crust.
WOS关键词PRESSURE CONTINENTAL-CRUST ; P-WAVE-FORMS ; RECEIVER FUNCTIONS ; STRUCTURE BENEATH ; COLLISION OROGEN ; SHAN ; EXHUMATION ; COESITE ; REFLECTION ; TERRANE
WOS研究方向Geology
语种英语
WOS记录号WOS:000262684300006
出版者SCIENCE PRESS
资助机构National Basic Research Program of China(TG1999075505) ; National Basic Research Program of China(TG1999075505) ; National Science Foundation of China(40634021) ; National Science Foundation of China(40634021) ; National Basic Research Program of China(TG1999075505) ; National Basic Research Program of China(TG1999075505) ; National Science Foundation of China(40634021) ; National Science Foundation of China(40634021) ; National Basic Research Program of China(TG1999075505) ; National Basic Research Program of China(TG1999075505) ; National Science Foundation of China(40634021) ; National Science Foundation of China(40634021) ; National Basic Research Program of China(TG1999075505) ; National Basic Research Program of China(TG1999075505) ; National Science Foundation of China(40634021) ; National Science Foundation of China(40634021)
源URL[http://ir.iggcas.ac.cn/handle/132A11/70810]  
专题中国科学院地质与地球物理研究所
通讯作者Li Hua
作者单位1.Nanjing Univ, Dept Earth Sci, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Li Hua,Wang LiangShu,Li Cheng,et al. Structure of the crust and uppermost mantle from broadband seismic array in the western Dabie Mountains, east central China[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2009,52(2):203-212.
APA Li Hua,Wang LiangShu,Li Cheng,Liu FuTian,Hu DeZhao,&Yu DaYong.(2009).Structure of the crust and uppermost mantle from broadband seismic array in the western Dabie Mountains, east central China.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,52(2),203-212.
MLA Li Hua,et al."Structure of the crust and uppermost mantle from broadband seismic array in the western Dabie Mountains, east central China".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 52.2(2009):203-212.

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来源：地质与地球物理研究所

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