气候变化领域集成服务门户(CCPortal): Distinct Orogenic Processes in the South- and North-Central Tien Shan From Receiver Functions

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DOI	10.1029/2019GL086941
	Distinct Orogenic Processes in the South- and North-Central Tien Shan From Receiver Functions
	Zhang B.; Bao X.; Xu Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Uplifting mechanisms for the Tien Shan, an active intracontinental orogenic belt, have been under debate for decades, a key issue being how the convergence has been accommodated at depth. Here we investigate the Moho structure across the Central Tien Shan by common-conversion-point imaging and H-k-c stacking of receiver functions from a dense array. The observed Moho exhibits distinct characteristics among subblocks. A southward-dipping diffuse Moho is imaged in the South-Central Tien Shan (SCTS), in contrast with the relatively flat and sharp Moho beneath the Tarim Basin. This feature along with the large Moho offset beneath the South-Boundary Fault suggests that the shortening and thickening of the Tien Shan crust rather than the underthrusting of the Tarim Basin are responsible for the uplift of the SCTS. In the North-Central Tien Shan, however, the imaged Moho doublet provides direct evidence for the underthrusting of the Kazakh Shield accommodating the convergence there. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Geophysics; Boundary faults; Common-conversion points; Crustal structure; Dense arrays; Orogenic belts; Orogenic process; Receiver functions; Tien Shan; Earth sciences; array; crustal structure; crustal thickness; deformation mechanism; Moho; stacking; uplift; China; Tarim Basin; Tien Shan; Xinjiang Uygur
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170548
作者单位	Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province, School of Earth Sciences, Zhejiang University, Hangzhou, China
推荐引用方式 GB/T 7714	Zhang B.,Bao X.,Xu Y.. Distinct Orogenic Processes in the South- and North-Central Tien Shan From Receiver Functions[J],2020,47(6).
APA	Zhang B.,Bao X.,&Xu Y..(2020).Distinct Orogenic Processes in the South- and North-Central Tien Shan From Receiver Functions.Geophysical Research Letters,47(6).
MLA	Zhang B.,et al."Distinct Orogenic Processes in the South- and North-Central Tien Shan From Receiver Functions".Geophysical Research Letters 47.6(2020).