Blar i forfatter "Mansard, Nicolas"

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    • Relationship between microstructures and resistance in mafic assemblages that deform and transform 

      Mansard, Nicolas; Stunitz, Holger; Raimbourg, Hugues; Précigout, Jacques; Plunder, Alexis; Nègre, Lucille (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-18)
      Syn-kinematic mineral reactions play an important role for the mechanical properties of polymineralic rocks. Mineral reactions (i.e., nucleation of new phases) may lead to grain size reduction, producing fine-grained polymineralic mixtures, which have a strongly reduced viscosity because of the activation of grain-size-sensitive deformation processes. In order to study the effect of deformation–reaction ...

    • The role of deformation-reaction interactions to localize strain in polymineralic rocks: Insights from experimentally deformed plagioclase-pyroxene assemblages 

      Mansard, Nicolas; Stunitz, Holger; Raimbourg, Hugues; Précigout, Jacques (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-09)
      In order to study the mutual effect of deformation and mineral reactions, we have conducted shear experiments on fine-grained plagioclase-pyroxene assemblages in a Griggs-type solid-medium deformation apparatus. Experiments were performed at a constant shear strain rate of 10<sup>−5</sup> s<sup>−1</sup>, a confining pressure of 1 GPa and temperatures of 800, 850 and 900 °C. While the peak stress of ...