Does subduction-induced mantle flow drive backarc extension?
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- 作者：Zhihao Chen ; zhihao.chen@monash.edu" class="auth_mail" title="E-mail the corresponding author ; Wouter P. Schellart ; Vincent Strak ; Joã ; o C. Duarte1
- 关键词：subduction ; geodynamic analogue modelling ; subduction-induced mantle flow ; backarc extension ; velocity gradient ; shear traction
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 May 2016
- 年：2016
- 卷：441
- 期：Complete
- 页码：200-210
- 全文大小：3359 K
文摘
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3D dynamic analog subduction models with a free/fixed overriding plate.
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A stereoscopic Particle Image Velocimetry (sPIV) technique was used.
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Backarc extension occurs during slab rollback and toroidal mantle flow.
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Maximum extension and horizontal gradient of vertical mantle velocity gradient match.
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Backarc extension is a consequence of horizontal gradients of basal drag force.