The Canino area, central Italy, is characterized by the discharge of a large quantity of CaSO4 thermal waters, the total flow rate of which is estimated to be 200 l/s. Ten to twenty l/s of the thermal flow are of an NaCl component from a deep source, which was identified by means of the B, Cl, Cs, Na, and Li contents of the waters. The Canino Na-Cl fluids have ratios among these species close to those of the geothermal fluids of Latera. The Canino hydrothermal system, which is located within buried carbonate structures, is therefore made up of a shallower zone, where the CaSO4 hydrotype is prevalent, and another deeper zone where an NaCl brine is present. For the sulphate fluids circulating in the upper levels of the system, a temperature of 70-100°C has been estimated, while a possible higher enthalpy resource may be represented by the chloride aqueous solutions circulating at deeper levels.
Hydrogeochemistry and hydrogeology of the Canino hydrothermal system (Italy)
GIAQUINTO, Stefano;FRONDINI, Francesco;
1991
Abstract
The Canino area, central Italy, is characterized by the discharge of a large quantity of CaSO4 thermal waters, the total flow rate of which is estimated to be 200 l/s. Ten to twenty l/s of the thermal flow are of an NaCl component from a deep source, which was identified by means of the B, Cl, Cs, Na, and Li contents of the waters. The Canino Na-Cl fluids have ratios among these species close to those of the geothermal fluids of Latera. The Canino hydrothermal system, which is located within buried carbonate structures, is therefore made up of a shallower zone, where the CaSO4 hydrotype is prevalent, and another deeper zone where an NaCl brine is present. For the sulphate fluids circulating in the upper levels of the system, a temperature of 70-100°C has been estimated, while a possible higher enthalpy resource may be represented by the chloride aqueous solutions circulating at deeper levels.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.