The geothermal anomaly
The normal geothermal gradient is an increase of 3°C for every 100 meters of depth. The Biancane are instead characterized by a high geothermal anomaly, due to the presence of a granitic pluton in slow cooling at 4000 meters of depth. In this area the magma is located just 7 km from the surface, in opposition to the standard 20-70 km. It is interesting to compare the column of the rocky bodies of the Biancane subsoil with the vertical section of an area with a normal geothermal gradient. By moving the cursor of the tool available for visitors and moving it to the various altitudes, we will discover how much the expected temperatures diverge (derived from the interpolation of certain values).