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Lubrication of dislocation glide in forsterite by Mg vacancies: Insights from Peierls-Nabarro modeling

Skelton, Richard; Walker, Andrew M

Description

Dislocation glide is an important contributor to the rheology of olivine under conditions of high stress and low to moderate temperature, such as occur in mantle wedges. Interactions between point defects and dislocation core may alter the Peierls stress, σp, and has been suggested that vacancy-related defects may selectively enhance glide on certain slip systems, changing the olivine deformation fabric. In this study, the Peierls-Nabarro model, parameterized by generalized stacking fault (GSF)...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
URI: http://hdl.handle.net/1885/202478
Source: Physics of the Earth and Planetary Interiors
DOI: 10.1016/j.pepi.2018.12.004

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