气候变化领域集成服务门户(CCPortal): Lithospheric structure in the Cathaysia block (South China) and its implication for the Late Mesozoic magmatism

CCPortal

DOI	10.1016/j.pepi.2019.04.003
	Lithospheric structure in the Cathaysia block (South China) and its implication for the Late Mesozoic magmatism
	Deng, Yangfan; Li, Jiangtao; Peng, Touping; Ma, Qiang; Song, Xiaodong; Sun, Xinlei; Shen, Yusong; Fan, Weiming
通讯作者	Deng, YF (通讯作者)
发表日期	2019
ISSN	0031-9201
EISSN	1872-7395
起始页码	24
结束页码	34
卷号	291
英文摘要	Mesozoic granitoids are widely distributed in South China, but the mechanism for generating the felsic magmas is still in debate. To understand the possible origin of the granitoids, we use joint inversion methods and forward modelling of receiver functions to reveal the lithospheric structure in the Cathaysia block. The joint inversion of receiver functions and surface wave dispersion with P-velocity constraints is applied to a dense array in the Cathaysia block, and the specific crustal Vp/Vs ratios obtained from a generalized H-kappa stacking method are introduced to the traditional joint inversion for passive seismic stations. The detailed structures provide valuable knowledge of the geological processes: 1) The present-day lithosphere is 60-70 km thick, which has been thinned since the Late Mesozoic with reference to geochemical data; 2) there is a lack of high Vp and Vs in the lower crust in this region. The results may have limited resolution on the localized magmatic underplating, but they do not support the extensive magmatic underplating at the Late Mesozoic. Other factors could be the mechanism for the granitoid formation in this region.
关键词	SEISMIC VELOCITY STRUCTURE U-PB ZIRCON JOINT INVERSION SOUTHEASTERN CHINA RECEIVER FUNCTIONS CRUSTAL STRUCTURE MANTLE BENEATH ISOTOPIC CONSTRAINTS TECTONIC EVOLUTION CONTINENTAL-CRUST
英文关键词	Lithospheric thinning; Joint inversion; Magmatic underplating; Forward modelling; Granitoid
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000470047000003
来源期刊	PHYSICS OF THE EARTH AND PLANETARY INTERIORS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259617
推荐引用方式 GB/T 7714	Deng, Yangfan,Li, Jiangtao,Peng, Touping,et al. Lithospheric structure in the Cathaysia block (South China) and its implication for the Late Mesozoic magmatism[J]. 中国科学院青藏高原研究所,2019,291.
APA	Deng, Yangfan.,Li, Jiangtao.,Peng, Touping.,Ma, Qiang.,Song, Xiaodong.,...&Fan, Weiming.(2019).Lithospheric structure in the Cathaysia block (South China) and its implication for the Late Mesozoic magmatism.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,291.
MLA	Deng, Yangfan,et al."Lithospheric structure in the Cathaysia block (South China) and its implication for the Late Mesozoic magmatism".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 291(2019).