Collision of continental corner from 3-D numerical modeling

doi:10.1016/j.epsl.2013.08.034

	Collision of continental corner from 3-D numerical modeling
	Li, Zhong-Hai 6; Xu, Zhiqin ; Gerya, Taras 1,2; Burg, Jean-Pierre
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2013
卷号	380 页码:98-111
关键词	continental collision lateral extrusion slab break-off 3-D numerical modeling Himalaya Zagros
ISSN号	0012-821X;EI 1385-013X
DOI	10.1016/j.epsl.2013.08.034
英文摘要	Continental collision has been extensively investigated with 2-D numerical models assuming infinitely wide plates or insignificant along-strike deformation in the third dimension. However, the corners of natural collision zones normally have structural characteristics that differ from linear parts of mountain belt. We conducted 3-D high-resolution numerical simulations to study the dynamics of a continental corner (lateral continental/oceanic transition zone) during subduction/collision. The results demonstrate different modes between the oceanic subduction side (continuous subduction and retreating trench) and the continental collision side (slab break-off and topography uplift). Slab break-off occurs at a depth (<,100 km to 300 km) that depends on the convergence velocity. The numerical models produce lateral extrusion of the overriding crust from the collisional side to the subduction side, which is also a phenomenon recognized around natural collision of continental corners, for instance around the western corner of the Arabia-Asia collision zone and around the eastern corner of the India-Asia collision zone. Modeling results also indicate that extrusion tectonics may be driven both from above by the topography and gravitational potentials and from below by the trench retreat and asthenospheric mantle return flow, which supports the link between deep mantle dynamics and shallower crustal deformation. (C) 2013 Elsevier B.V. All rights reserved.
学科主题	构造地质学
WOS关键词	DAY CRUSTAL DEFORMATION ; NORTH ANATOLIAN FAULT ; MANTLE WEDGE PLUMES ; SLAB DETACHMENT ; HIGH-PRESSURE ; HIMALAYAN SYNTAXES ; ABLATIVE SUBDUCTION ; ULTRAHIGH-PRESSURE ; METAMORPHIC ROCKS ; PLATE KINEMATICS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000326772300011
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40109]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, State Key Lab Continental Tecton & Dynam, Beijing, Peoples R China. 2.Swiss Fed Inst Technol, Dept Earth Sci, Inst Geophys, Zurich, Switzerland. 3.Moscow MV Lomonosov State Univ, Dept Geol, Moscow, Russia. 4.ETH, Inst Geol, Dept Earth Sci, Zurich, Switzerland. 5.Univ Zurich, CH-8006 Zurich, Switzerland. 6.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Li, Zhong-Hai,Xu, Zhiqin,Gerya, Taras,et al. Collision of continental corner from 3-D numerical modeling[J]. EARTH AND PLANETARY SCIENCE LETTERS,2013,380:98-111.
APA	Li, Zhong-Hai,Xu, Zhiqin,Gerya, Taras,&Burg, Jean-Pierre.(2013).Collision of continental corner from 3-D numerical modeling.EARTH AND PLANETARY SCIENCE LETTERS,380,98-111.
MLA	Li, Zhong-Hai,et al."Collision of continental corner from 3-D numerical modeling".EARTH AND PLANETARY SCIENCE LETTERS 380(2013):98-111.