Fig. 3From: The Cornubian geothermal province: heat production and flow in SW England: estimates from boreholes and airborne gamma-ray measurementsRevised granite-average temperatures (in degrees Celsius) at a depth of 5 km and percentage increases (in brackets) over previously published estimates. Locations of five towns, referred to in the text, are shown in blue; PEN Penzance, StI St Ives, CAM Camborne, RED Redruth, StA St. AustellBack to article page