气候变化领域集成服务门户(CCPortal): Crustal Deformations of the Central North China Craton Constrained by Radial Anisotropy

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DOI	10.1029/2019JB018374
	Crustal Deformations of the Central North China Craton Constrained by Radial Anisotropy
	Ai S.; Zheng Y.; Wang S.
发表日期	2020
ISSN	21699313
卷号	125 期号:7
英文摘要	Situated in a transition zone between the western and eastern North China Craton (NCC), the central NCC exhibits complex dynamics features. Significant lithosphere thinning is observed beneath the eastern NCC and the northern segment of the central NCC. To study how the crust responses to the distinct lateral variations of the lithospheric mantle, we develop a method for joint inversion of Rayleigh and Love dispersion curves based on a transverse-isotropic (or radial anisotropy) medium and obtain a 3-D crustal radial anisotropy model. The results reveal significant heterogeneities along the Cenozoic Fenhe-Weihe Rift (FWR). In the northern FWR, the discretely distributed lower crust positive anisotropy and upper crust negative anisotropy suggest the rifting is mainly dominated by the active mantle upwelling resulting in the Datong volcanoes. Similarly, the northern segment of the Taihang Mountain is also strongly affected by the magmatic activities and exhibits different anisotropy properties compared to its central-to-southern counterpart. Based on the negative anisotropy observed in the middle-to-lower crust beneath most parts of the Taihang Mountain, we speculate that a lower-crust compression model can be applied to the Taihang Mountain, which is totally different to that of the adjacent Bohai Bay Basin. Possibly, the root of the Taihang Mountain is pushed by the westward moving lower crust coupled with the lateral escaping mantle flow beneath the Bohai Bay Basin. The Taihang Mountain and the Bohai Bay Basin are formed in similar tectonic environments, but are deformed in different ways. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	ambient noise; central North China Craton; crustal deformation; Fenhe-Weihe Rift; radial anisotropy; Taihang Mountain
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187771
作者单位	Hubei Subsurface Multi-scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China; State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Ai S.,Zheng Y.,Wang S.. Crustal Deformations of the Central North China Craton Constrained by Radial Anisotropy[J],2020,125(7).
APA	Ai S.,Zheng Y.,&Wang S..(2020).Crustal Deformations of the Central North China Craton Constrained by Radial Anisotropy.Journal of Geophysical Research: Solid Earth,125(7).
MLA	Ai S.,et al."Crustal Deformations of the Central North China Craton Constrained by Radial Anisotropy".Journal of Geophysical Research: Solid Earth 125.7(2020).