Fig. 14From: Influence of depth, temperature, and structure of a crustal heat source on the geothermal reservoirs of Tuscany: numerical modelling and sensitivity studyTemperature–depth profiles of the four potential boreholes I–IV for the reference model. The assumption here is that the boreholes only reach a depth of 3 km. The remainder of the temperature–depth profile is plotted in light grey Back to article page