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Fig. 7 | Geothermal Energy

Fig. 7

From: The Cornubian geothermal province: heat production and flow in SW England: estimates from boreholes and airborne gamma-ray measurements

Fig. 7

ac Comparison of borehole (BH) and airborne radionuclide concentration estimates for a potassium, b thorium and c uranium. Red symbols denote off-granite locations. Error bars are taken from the BH measurements and denote 1 standard deviation. d Corresponding comparison for heat production. Green line denotes best linear fit for off-granite locations and blue line denotes the corresponding fit for on-granite locations. BH codes are those listed in Table 1

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