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Authors: Ranaldi, M.*
Lelli, M.*
Tarchini, L.*
Carapezza, M. L.*
Patera, A.*
Title: Estimation of the geothermal potential of the Caldara di Manziana sitein the Sabatini Volcanic District (central Italy) by integratinggeochemical data and 3D-GIS modelling
Title of journal: Geothermics
Series/Report no.: /62 (2016)
Publisher: Elsevier Science Limited
Issue Date: 7-Apr-2016
DOI: 10.1016/j.geothermics.2016.04.003
Keywords: Geothermal potential of Caldera di Manziana
Medium enthalpy geothermal field
Soil CO2 flux survey
GIS model
Geothermometric-geobarometric estimations
Abstract: This study evaluated the geothermal potential of Caldara di Manziana in central Italy. The chemical com-position of gas emissions was used for geothermometric-geobarometric estimations and the total amountof CO2released was assessed. The subsurface geology was reconstructed using data from deep exploratoryand shallow temperature-gradient wells. The bottom of the superficial volcanic deposits, the thickness ofthe impervious flysch cover and the top of the geothermal reservoir hosted in fractured Mesozoic lime-stones were reconstructed by a 3D-GIS modelling. Our results are consistent with a geothermal reservoir(T ∼140◦C) at ∼1000 m depth, with an estimated thermal energy capacity of 46–48 MWt.
Appears in Collections:04.08.99. General or miscellaneous
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