Fig. 8From: Pore-fluid-dependent controls of matrix and bulk thermal conductivity of mineralogically heterogeneous sandstonesCross-plots of porosity (Φ) and measured bulk thermal conductivity (λb) of a air-saturated sandstone samples and b water-saturated sandstone samples, showing a coefficient of determination R2 of 0.60 and 0.15 only. λb is measured parallel to bedding. Samples containing > 85 vol.% total quartz are highlighted by a red x, as they plot as outliersBack to article page