globalchange  > 气候变化与战略
DOI: 10.1016/j.tecto.2020.228716
论文题名:
Controls of subducting slab dip and age on the extensional versus compressional deformation in the overriding plate
作者: Dasgupta R.; Mandal N.; Lee C.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2021
卷: 801
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170794
Appears in Collections:气候变化与战略

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作者单位: Department of Geological Sciences, Jadavpur University, Kolkata, India; Department of Earth System Sciences, Yonsei University, Seoul, South Korea

Recommended Citation:
Dasgupta R.,Mandal N.,Lee C.. Controls of subducting slab dip and age on the extensional versus compressional deformation in the overriding plate[J]. Tectonophysics,2021-01-01,801
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