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Fig. 4 | Geothermal Energy

Fig. 4

From: A probabilistic geologic model of the Krafla geothermal system constrained by gravimetric data

Fig. 4

Rock property data used to constrain prior pdfs. a Measured data for grain density and total porosity, sorted by lithology. b Prior probability distribution functions (pdfs) for bulk density. c Measured data for grain density and total porosity of hyaloclastite, sorted by alteration zone. d Prior pdfs for hyaloclastite bulk density calculated for alteration zones. SZ/MLC indicates pdf for smectite–zeolite and mixed-layer clay zones, CEA chlorite, chlorite–epidote, and epidote–actinolite zones

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