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

doi:10.1007/s11430-009-0017-z

	Structure of the crust and uppermost mantle from broadband seismic array in the western Dabie Mountains, east central China
	Li Hua 1; Wang LiangShu 1; Li Cheng 1; Liu FuTian 2; Hu DeZhao 1; Yu DaYong 1
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	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
DOI	10.1007/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
出版者	SCIENCE PRESS
WOS记录号	WOS:000262684300006
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)
内容类型	期刊论文
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.