Strain localization during crustal-scale boudinage to form extensional metamorphic domes in the Aegean Sea
Published:January 01, 2004
Laurent Jolivet, Vincent Famin, Caroline Mehl, Teddy Parra, Charles Aubourg, Ronan Hébert, Pascal Philippot, 2004. "Strain localization during crustal-scale boudinage to form extensional metamorphic domes in the Aegean Sea", Gneiss Domes in Orogeny, Donna L. Whitney, Christian Teyssier, Christine S. Siddoway
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Post-orogenic extension in the Aegean Sea has produced several metamorphic domes. Some domes (“b-type”) are elongated perpendicular to the main N-S direction of extension, and they correspond to the exhumation of the middle crust along north-dipping detachments. The example of Tinos shows the progressive localization of deformation from the initial boudinage at all scales to the formation of brittle structures at the tips of boudins and the selection of one of those, which becomes the main detachment. The progressive deformation leading to strain localization is described alongside the P-T-t evolution and the role of fluid circulation. The second type of...