Fig. 18From: Stress sensitivity of porosity and permeability under varying hydrostatic stress conditions for different carbonate rock types of the geothermal Malm reservoir in Southern GermanyThin sections of the tested dolostone samples. The samples were impregnated by blue-dye resin to visualize the pore space and partially stained with Alizarin-S for identification of calcite. See text for a detailed description of the thin sections and the classification of porosityBack to article page