Fig. 9From: Influence of depth, temperature, and structure of a crustal heat source on the geothermal reservoirs of Tuscany: numerical modelling and sensitivity studySpecific surface heat flow. Thick black lines mark the borders of rock units a–c. Open squares show the locations of the specific heat flow measurements listed in Table 3 (Locations 1–7) and the borehole temperature profiles shown in Fig. 7 (Locations 1–3). The cross-sections A–A′ and B–B′, and selected potential borehole locations I–IV are defined hereBack to article page