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DOI	10.1016/j.tecto.2020.228716
	Controls of subducting slab dip and age on the extensional versus compressional deformation in the overriding plate
	Dasgupta R.; Mandal N.; Lee C.
发表日期	2021
ISSN	00401951
卷号	801
英文摘要	Oceanic plate subduction can exert extensional, compressional or both types of deformations simultaneously in overriding plates. In this study, we explore the factors controlling these two competing modes of deformation in response to contrasting stress fields. Two-dimensional computational fluid dynamics models are presented to show that the dip and age of subducting slabs are crucial parameters to modulate the extensional versus compressional deformations. Shallow-dipping (< 30°) and/or young (< 60 Myr) subducting slabs favor compressional tectonics to form an orogenic wedge (accretionary type), whereas steeply dipping (> 45°) and/or old (> 60 Myr) slabs facilitate extensional tectonics, expressed as a back-arc basin (non-accretionary type). We validate the parametric analysis by comparing our model results with the observed modes of overriding plate deformation in natural subduction zones. © 2020 Elsevier B.V.
关键词	Back-arc extension CFD models Plate margin deformation Slab roll back Subduction zone Topography
英文关键词	Computational fluid dynamics; Structural geology; Tectonics; Compressional deformation; Compressional tectonics; Computational fluid dynamics models; Crucial parameters; Extensional tectonics; Oceanic plate subduction; Parametric -analysis; Plate deformations; Deformation; accretionary prism; backarc basin; compression; computational fluid dynamics; continental margin; deformation; extensional tectonics; plate tectonics; subduction zone
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207961
作者单位	Department of Geological Sciences, Jadavpur University, Kolkata, India; Department of Earth System Sciences, Yonsei University, Seoul, South Korea
推荐引用方式 GB/T 7714	Dasgupta R.,Mandal N.,Lee C.. Controls of subducting slab dip and age on the extensional versus compressional deformation in the overriding plate[J],2021,801.
APA	Dasgupta R.,Mandal N.,&Lee C..(2021).Controls of subducting slab dip and age on the extensional versus compressional deformation in the overriding plate.Tectonophysics,801.
MLA	Dasgupta R.,et al."Controls of subducting slab dip and age on the extensional versus compressional deformation in the overriding plate".Tectonophysics 801(2021).