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Influence of trench width on subduction hinge retreat rates in 3-D models of slab rollback

Freeman, Justin; Schellart, Wouter; Stegman, D R; Moresi, Louis N; May, D

Description

Subduction of tectonic plates limited in lateral extent and with a free-trailing tail, i.e., "free subduction,'' is modeled in a three-dimensional (3-D) geometry. The models use a nonlinear viscoplastic rheology for the subducting plate and exhibit a wide range of behaviors depending on such plate characteristics as strength, width, and thickness. We investigate the time evolution of this progressive rollback subduction, measure the accompanying return flow in the upper mantle, and quantify the...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
URI: http://hdl.handle.net/1885/21729
Source: Geochemistry, Geophysics, Geosystems. G3
DOI: 10.1029/2005GC001056

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