Rudge, John F. and Bercovici, David (2015) Melt-band instabilities with two-phase damage. Geophysical Journal International, 201 (2). pp. 640-651. ISSN ISSN: 0956-540X, ESSN: 1365-246X DOI 10.1093/gji/ggv040
Rudge and Bercovici - 2015 - Melt-band instabilities with two-phase damage.pdf - Published Version
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Deformation experiments on partially molten rocks in simple shear form melt bands at 20Â° to the shear plane instead of at the expected 45Â° principal compressive stress direction. These melt bands may play an important role in melt focusing in mid-ocean ridges. Such shallow bands are known to form for two-phase media under shear if strongly non-Newtonian power-law creep is employed for the solid phase, or anisotropy imposed. However laboratory experiments show that shallow bands occur regardless of creep mechanism, even in diffusion creep, which is nominally Newtonian. Here we propose that a couple of forms of two-phase damage allow for shallow melt bands even in diffusion creep.
|Additional Information:||This article has been accepted for publication in Geophysical Journal International © The Authors 2015. Published by Oxford University Press on behalf of The Royal Astronomical Society.All rights reserved.|
|Uncontrolled Keywords:||2015AREP; IA69;|
|Subjects:||02 - Geodynamics, Geophysics and Tectonics|
|Divisions:||02 - Geodynamics, Geophysics and Tectonics
08 - Green Open Access
|Journal or Publication Title:||Geophysical Journal International|
|Page Range:||pp. 640-651|
|Depositing User:||Sarah Humbert|
|Date Deposited:||12 Aug 2015 09:49|
|Last Modified:||30 Aug 2015 02:27|
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