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Mylonites of the South Armorican Shear Zone: Insights for crustal-scale fluid flow and water-rock interaction processes

Tartese, Romain; Boulvais, Philippe; Poujol, Marc; Chevalier, Thomas; Paquette, Jean-Louis; Ireland, Trevor; Deloule, Etienne

Description

Mylonites display petrographical and geochemical characteristics that can be related to syn-deformation fluid circulation. The South Armorican Shear Zone, a major structural feature of the Armorican Massif (France), is outlined by the presence of mylonitic rocks cropping out mostly in open quarries. These mylonites were essentially formed at the expense of peraluminous granitic bodies. Deformation occurred from ductile conditions in the biotite stability field (>400°C) down to lower greenschist...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/70123
Source: Journal of Geodynamics
DOI: 10.1016/j.jog.2011.05.003

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