Fig. 11

Stratigraphic log and gamma ray (GR) (after Aichholzer et al. 2016), measured temperature profile T and derived temperature gradient ∆T/∆z (same scale as temperature profile), thermal conductivities λ for dry, hot and wet formations and associated calculated heat flow densities q for the Soultz-sous-Forêts GPK-2 well. Vertical lines indicate mean values for ∆T/∆z (left), λ (middle) and q (right) for a given interval (global (from surface to top of the Muschelkalk), Tertiary, Jurassic and Keuper). Dots indicate average value for a given formation. Stratigraphy is shown in the background for each graph