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Fig. 5 | Geothermal Energy

Fig. 5

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

Fig. 5

A 2.5 x 2 km area on the Carnmenellis granite (see Fig. 1). a 1:25 k topographic map and b orthorectified aerial photograph showing three quarries (Q1 to Q3). Q1 is Chywoon Quarry (active), Q2 is Carnsew Quarry (active) and Q3 (largely off map to west) is Kessels Quarry. Black dots represent airborne radiometric measurement points, along N–S survey lines. c Contoured values of the highest values of total count

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