Istituto di Geoscienze e Georisorse     
Celati R., Grassi S., D'Amore F., Marcolini L. The low temperature hydrothermal system of Campiglia Tuscany (Italy): a geochemical approach. In: Geothermics, vol. 20 (1/2) pp. 67 - 81. Elsevier, 1991.
The Campiglia hydrothermal system is a low temperature hydrothermal system located in southwestern Tuscany, a region of Italy characterized by intense geothermal activity and by the presence of high temperature exploited geothermal reservoirs. Six water-points, with temperatures ranging between 20 and 47C and different chemical and isotopic compositions, are found close to the margins of outcrops of the main regional aquifer formation. Systematic hydrogeological, geochemical and isotopic observations and temperature measurements were carried out on the different springs and wells for a period of three years (19841986). Constant water characteristics with time were observed in four waterpoints; two wells had variable trends depending on mixing processes. A groundwater circulation model characterized by flowpaths of different length and depth is suggested by the variety of chemical and isotopic characteristics and is consistent with geothermometry, which indicates temperatures up to 25C higher than those measured at the spring emergences. An important water supply to the system comes from local recharge, although regional circulation may also be present, particularly in the easatern part of the investigated area.
URL: http://https://www.journals.elsevier.com/geothermics
Subject isotopic composition
geochemical thermometers
waters: analytical data

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