Figure 4: Three-dimensional geological conceptual model cut along the same WNW, SSE cross section realized by Buonasorte et al. [24] (see Figure 2). The same cross section as in Figure 1 is used to slide the model. Model (ca. 293 km2) internal subdivision shows the seven adopted hydrogeological units, named as reported in Table 1. Reservoir units (Scaglia complex, Tuscan nappe complex, and Umbria nappe complex) have been distinguished between formations stacked into the geothermal reservoir (unit name, in) and those falling outside the producing area (unit name, out). Distances between reservoir area and lateral model boundaries are shown (7.5 km along E-W direction and 2.5 km along N-S direction).