Fig. 10

Cross-plots illustrating the impact of particular minerals on measured λb values. a1 Correlation of RVA total quartz (vol.%) and a2 of RVA total quartz + dolomite (vol.%) with bulk thermal conductivities (λb) of air-saturated sandstone samples. b1 and b2 same as above, but for water-saturated sandstone samples. λb is always measured parallel to bedding. Samples characterized by < 5% Φ and samples with > 20 vol.% dolomite are highlighted as they plot as outliers