Fig. 10From: The Cornubian geothermal province: heat production and flow in SW England: estimates from boreholes and airborne gamma-ray measurementsAreas of 4 granite outcrops, radially extended by 2 km showing BH-corrected heat production estimates, obtained using Eq. (1), all to same colour scaling. Granite outcrops are defined by white lines. A heat production value of 5 μW m−3 is shown as a black contour. a Land’s End with coast, b St. Austell, c Bodmin with blanket bog zones shown with a white outline and d Dartmoor with blanket bog zones shown with white outline Back to article page