PUMA
Istituto di Geoscienze e Georisorse     
Michard G., Grimaud D., D'Amore F., Fancelli R. Influence of mobile ion concentrations on the chemical composition of geothermal waters in granitic areas. Example of hot springs from Piemonte (Italy). In: Geothermics, vol. 18 (5/6) pp. 729 - 741. Elsevier, 1989.
 
 
Abstract
(English)
The six hot springs from Vinadio and the springs from Valdieri (Piemonte, Italy) have similar emergence temperatures (~50°C), similar deep temperatures (~115°C) and their chloride content varies from 0.9 to 30 mmol/kg. Major elements and some trace elements concentrations (Li, Rb, Cs, Sr, Ba, Mn) correlate closely with Na concentrations. The correlations in a log-log diagram are linear with a slope close to the electric charge of the ion. This is explained, for major elements, by an equilibrium between “a complete assemblage” of minerals (Michard, 1987) and a water containing varying amounts of chloride. It is suggested, from the Cl/Br ratio, that chloride originates by halite dissolution during the descent of the water.
URL: http://https://www.journals.elsevier.com/geothermics
Subject gas: analytical data
geochemical thermometers
thermal springs


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