Gradient of deformation observed in the dolomite facies, increasing from left (a) to right (e). The top panel shows the structures observed on cores, the middle panel provides illustrations of fracturing and cataclasis, observed under optical microscope in plane-polarized light; the lower panel gives example of microstructures on SEM images that give evidence for cataclasis by fracturing the dolomite along the crystals twinnings (white arrows).