Geochemical Study On Natural Gas And Water Discharges In The Southern Latium (Italy)- Circulation, Evolution Of Fluids And Geothermal Potential In The Region

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Journal Article: Geochemical Study On Natural Gas And Water Discharges In The Southern Latium (Italy)- Circulation, Evolution Of Fluids And Geothermal Potential In The Region

Abstract
The waters discharged in Southern Latium (south of Rome) are mainly meteoric in origin. Two types of circulation occur in the region: one infiltrates the carbonate sediments outcropping in the area and emerges from fractures along their borders, the other consists of waters that infiltrate and circulate essentially within the Albani volcanic rocks. The first type produces either alkaline earth bicarbonate-sulfate waters or, if they mix with fossil marine waters or interact with recent marine sediments, alkaline-chloride waters (on the Pontina Plain). The chemistry of the waters produced by the second type of circulation (alkaline earth-bicarbonate or alkaline-bicarbonate) is strictly related to their gaseous phases, which consist for the most part of the CO2 produced at depth. Silica and gas geothermometers, whose results correlate well, indicate that low enthalpy fluids (<= 80°C) are present throughout the study area, with the exception of the northwestern part where medium enthalpy fluids (150°C) also appear.

Authors 
V. Duchi, M. Paolieri and A. Pizzetti








Published Journal 
Journal of Volcanology and Geothermal Research, 1991





DOI 
Not Provided
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Citation

V. Duchi,M. Paolieri,A. Pizzetti. 1991. Geochemical Study On Natural Gas And Water Discharges In The Southern Latium (Italy)- Circulation, Evolution Of Fluids And Geothermal Potential In The Region. Journal of Volcanology and Geothermal Research. (!) .