Objectives :
Reproduce alteration in tectonic settings, under triaxial stress configuration.

Description of planned work :
Percolation experiments will be performed for several months at 180°C on the samples generated in T2.2, using the triaxial percolation cells of ISTerre, on which alteration experiments could be successfully conducted (Fig 1b). After upgrade of the device (new pumps, new stress servocontrol), monitoring will provide the high-resolution evolution of permeability and deformation of the samples during the experiments, with regular fluid sampling for geochemistry.

Updated on 1er avril 2024