Fig. 3From: Microstructural and petrophysical properties of the Permo-Triassic sandstones (Buntsandstein) from the Soultz-sous-Forêts geothermal site (France)Total porosity as a function of connected porosity for the 20-mm-diameter sandstone samples from exploration well EPS-1 at Soultz-sous-Forêts (Alsace, France) (cored either perpendicular or parallel to bedding) and sandstones from the three quarry sites (see Fig. 1c for locations). n refers to the number of samplesBack to article page