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Geothermal Energy

Science – Society – Technology

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Fig. 10 | Geothermal Energy

Fig. 10

From: Pore-fluid-dependent controls of matrix and bulk thermal conductivity of mineralogically heterogeneous sandstones

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

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