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Deformation processes and rheology of pyroxenites under lithospheric mantle conditions

Frets, Erwin; Tommasi, Andrea; Garrido, Carlos J; Padron-Navarta, Jose; Amri, Isma; Targuisti, Kamal


We combined microstructural observations and high-resolution crystallographic preferred orientation (CPO) mapping to unravel the active deformation mechanisms in garnet clinopyroxenites, garnet-spinel websterites, and spinel websterites from the Beni Bousera peridotite massif. All pyroxenites display microstructures recording plastic deformation by dislocation creep. Pyroxene CPOs are consistent with dominant slip on [001]{110} in clinopyroxene and on [001](100) or [001](010) in orthopyroxene....[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Journal of Structural Geology
DOI: 10.1016/j.jsg.2012.02.019


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