气候变化领域集成服务门户(CCPortal): Crustal flow beneath the eastern margin of the Tibetan plateau

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DOI	10.1007/s11589-012-0871-1
	Crustal flow beneath the eastern margin of the Tibetan plateau
	Zhu, Jieshou; Zhao, Junmeng; Jiang, Xiaotao; Fan, Jun; Liang, Chuntao
通讯作者	Zhu, JS (通讯作者)
发表日期	2012
ISSN	1674-4519
EISSN	1867-8777
起始页码	469
结束页码	483
卷号	25 期号:5-6
英文摘要	In large continental orogens, an important research topic is the behavior of deep crustal and upper mantle deformation, and the flow styles of ductile material. The morphology of the eastern margin of the Tibetan plateau, adjacent to the Sichuan basin, is characterized by very steep relief with high mountain ranges. The crust beneath this region slows the velocities in the middle and lower crust. We have adopted a relatively dense network to inverse the detailed structure of the crust and upper mantle along the eastern margin of the Tibetan plateau and Sichuan basin, using teleseismic data via receiver function analysis. The results are in-line with the hypothesis that viscous crustal material is flowing beneath the eastern margin of the Tibetan plateau and that this process drives overlying crustal material around the strong and rigid Sichuan basin. When the viscous material hits this obstruction, flows are divided into two or more branches with different directions. The upper part of the upwelling viscous flow produces the pressure to intrude the upper crust, thereby driving uplift of mountain ranges and high peaks. In contrast, the lower part of the downwelling viscous flow produces the pressure to intrude the lower crust and upper mantle to deepen the Moho discontinuity, causing observed crustal thickening.
关键词	SOUTHERN TIBET DEFORMATION TOMOGRAPHY TECTONICS SICHUAN UPLIFT NOISE
英文关键词	eastern margin of the Tibetan plateau; viscous crustal flow; upwelling and downwelling; mountain range uplift; deepened Moho discontinuity
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000210058700011
来源期刊	EARTHQUAKE SCIENCE
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/258015
推荐引用方式 GB/T 7714	Zhu, Jieshou,Zhao, Junmeng,Jiang, Xiaotao,et al. Crustal flow beneath the eastern margin of the Tibetan plateau[J]. 中国科学院青藏高原研究所,2012,25(5-6).
APA	Zhu, Jieshou,Zhao, Junmeng,Jiang, Xiaotao,Fan, Jun,&Liang, Chuntao.(2012).Crustal flow beneath the eastern margin of the Tibetan plateau.EARTHQUAKE SCIENCE,25(5-6).
MLA	Zhu, Jieshou,et al."Crustal flow beneath the eastern margin of the Tibetan plateau".EARTHQUAKE SCIENCE 25.5-6(2012).