Lithospheric structure of the South China Block from S-receiver function

doi:10.6038/cjg2018L0226

	Lithospheric structure of the South China Block from S-receiver function
	Zhang YaoYang 1,2,4; Chen Ling 1,2; Ai YinShuang 1,2; Jiang MingMing 1; Xu WeiWei 3; Shen ZhongYin 3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2018
卷号	61 期号:1 页码:138-149
关键词	S-receiver Function Lithospheric Structure South China Block Lithosphere-asthenosphere Boundary
ISSN号	0001-5733
DOI	10.6038/cjg2018L0226
文献子类	Article
英文摘要	A similar to 2500 km broadband digital seismic array was deployed in the South China Block and the northeastern Tibetan Plateau, from December 2009 to September 2013. Based on the teleseismic data from 130 portable stations in the South China Block of this array and 90 nearby national permanent stations, we utilize the wave equation-based migration technique on S-receiver functions (RF) to image the lithospheric structure. Our imaging results show that the lithospheric structure is dramatically distinct for different tectonic units and there are very local variations of the lithospheric structure near the tectonic boundaries. Thick lithosphere is mainly distributed beneath the Sichuan Basin. Thin lithosphere is mainly imaged beneath the Eastern Sichuan Fold Belt and the Cathaysia Block. The lithosphere is obviously thickened beneath the Xuefeng Mountain, and the lithospheric structure and feature show significant E-W difference separated by this mountain along the profile. Combining with other geophysical observations on the crust and the upper mantle, several conclusions are achieved as below: (1) The Sichuan Basin has preserved a thick and cold cratonic lithospheric root and the mid-lithospheric structure is characterized by obvious stratification. (2) The Xuefeng Mountain may be the tectonic boundary of the Yangtze Craton and the Cathaysia Block in the southwest. (3) The region to the east of the Xuefeng Mountain may have experienced lithospheric modification and thinning since Phanerozoic. The pattern of the modification is similar to that in the North China Craton, which shows different lithospheric structure on the opposite sides of the North-South Gravity Lineament. Our results could provide new insights into the tectonic evolution and dynamic process of the South China Block.
WOS关键词	UPPER-MANTLE STRUCTURE ; SEISMIC ANISOTROPY ; TECTONIC EVOLUTION ; TIBETAN PLATEAU ; EASTERN MARGIN ; SICHUAN BASIN ; BENEATH ; SUBDUCTION ; CRATON ; DESTRUCTION
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000422703100013
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82432]
专题	中国科学院地质与地球物理研究所
通讯作者	Chen Ling
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China 4.Inst Geophys & Geochem Explorat, Langfang 065000, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Zhang YaoYang,Chen Ling,Ai YinShuang,et al. Lithospheric structure of the South China Block from S-receiver function[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(1):138-149.
APA	Zhang YaoYang,Chen Ling,Ai YinShuang,Jiang MingMing,Xu WeiWei,&Shen ZhongYin.(2018).Lithospheric structure of the South China Block from S-receiver function.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(1),138-149.
MLA	Zhang YaoYang,et al."Lithospheric structure of the South China Block from S-receiver function".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.1(2018):138-149.