25 research outputs found

    Evolution des proprietes petrophysiques d'un calcaire : le role de la dissolution-cristallisation dans une deformation cassante (fuveliens du Bassin de l'Arc, Provence)

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    SIGLECNRS T Bordereau / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

    Deformation mechanisms and fluid-driven mass transfers in the recent fault zones of the Corinth rift (Greece).

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    Normal fault zones affecting the pre-rift limestones in the Corinth rift comprise breccia layers separated by slip surfaces, but also numerous stylolites and calcite veins attesting the importance of aseismic fluid-driven mass transfer in fault activity. Cathodoluminescence microscopy shows that external (meteoric?) water circulated in the fault zones, whereas mass transfer in the surrounding rocks implied a closed system with water chemically equilibrated with the host-limestone. From these observations, we propose preliminary models of structural development and fluid flow in active fault zones in superficial conditions, with a tendency to concentration of deformation and fluid flow related to fault tip propagation

    Porosity evolution beneath sequence boundaries of tethyan carbonate platforms

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    Carrio-Schaffhauser Elisabeth, Arnaud-Vanneau Annie, Arnaud Hubert, Fourcade Eric. Porosity evolution beneath sequence boundaries of tethyan carbonate platforms. In: Géologie Méditerranéenne. Tome 28, numéro 1-2, 2001. Anatomy of Carbonate Bodies / Anatomie des corps carbonates. International Meeting / Colloque international. Marseille, 9-12 mai 2001, France, sous la direction de Marc Floquet, Jérôme Hennuy et Jean-Pierre Masse. pp. 45-47
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