Fig. 18From: Microstructural and petrophysical properties of the Permo-Triassic sandstones (Buntsandstein) from the Soultz-sous-Forêts geothermal site (France)Specific surface area as a function of clay content for twelve sandstones sampled from exploration well EPS-1 at Soultz-sous-Forêts (Alsace, France). n refers to the number of samplesBack to article page