Strain localization in ductile rocks: A comparison of natural and simulated pinch-and-swell structures
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- 作者：Max Petersa ; max.peters@geo.unibe.ch" class="auth_mail" title="E-mail the corresponding author ; ; Alfons Bergera ; Marco Herwegha ; Klaus Regenauer-Liebb
- 关键词：Deformation mechanisms ; Boudinage ; Microstructural evolution ; Thermal feedback ; Numerical methods
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：12 June 2016
- 年：2016
- 卷：680
- 期：Complete
- 页码：140-154
- 全文大小：3728 K
文摘
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We study the onset of localized deformation in layered ductile rocks.
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Pinch-and-swell structures commence with a change of dislocation to diffusion creep.
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Viscosity weakening is induced by dissipated energy from grain size reduction.
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The evolution reveals multiple steady states at different times and locations.
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The paleo-deformation conditions of localized creep can quantitatively be derived.