he thermal waters of the Plio-Quaternary Campidano graben have Na-HCO3(Cl) composition, near-neutral pH, and can be attributed to water-rock interaction processes which take place into the Paleozoic basement (granitic and metamorphic rocks) in presence of deep origin CO2. A new hydrothermal manifestation in the Campidano system, the Su Campu borehole at Monastir (43°C), presents Na(Ca)-Cl composition and alkaline pH (8.6), and shows some analogies with the thermal water of Casteldoria. The study of major and some trace elements in the Su Campu water allows to draw an underground circuit-scheme, which is also supported by the available geophysical, stratigraphical and structural data
A new hydrothermal manifestation in the Campidano graben, Italy: Su Campu borehole (Monastir)
FRAU, FRANCO
1994-01-01
Abstract
he thermal waters of the Plio-Quaternary Campidano graben have Na-HCO3(Cl) composition, near-neutral pH, and can be attributed to water-rock interaction processes which take place into the Paleozoic basement (granitic and metamorphic rocks) in presence of deep origin CO2. A new hydrothermal manifestation in the Campidano system, the Su Campu borehole at Monastir (43°C), presents Na(Ca)-Cl composition and alkaline pH (8.6), and shows some analogies with the thermal water of Casteldoria. The study of major and some trace elements in the Su Campu water allows to draw an underground circuit-scheme, which is also supported by the available geophysical, stratigraphical and structural data
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