The layered model of the Copahue geothermal reservoir, Argentina

Abstract

The definition of a conceptual model is essential during the feasibility stage of a geothermal project, given that it drives both surficial and underground exploration, constraining the inferences about the reservoir nature. Geothermal reservoirs are commonly classified as liquid-or vapor-dominated, based on the mobile phase. A reservoir steam fraction of 1 defines a vapor-dominated system, whereas a steam fraction from 1 to 0 defines a two-phase, liquid-dominated system. Each reservoir-type develops at different

AMS and rock magnetism in the Caviahue-Copahue Volcanic Complex (Southern Andes): Emission center, flow dynamics, and implications to the emplacement of non-welded PDCs

“…In this context, the CCVC composes one of the most active volcanic centers in the Andean belt, with several eruptive events in the last century (Caselli et al, 2016;Tassi et al, 2016). The particular setting of the CCVC attracted several studies in the recent decades, with a broad range of topics including geomorphology (e.g., Díaz, 2003;Báez et al, 2020a), geochemistry (e.g., Mazzoni and Licitra, 2000;Melnick et al, 2006;Varekamp et al, 2006), geochronology (e.g., Pesce, 1989;Melnicik et al, 2006) structural (e.g., Melnick et al, 2006;Velez et al, 2011;Folguera et al, 2016), geothermal (e.g., Barcelona et al, 2019), andAMS andpaleomagnetism (e.g., Ort et al, 2014;Moncinhatto et al, 2019Moncinhatto et al, , 2020.…”

Hydrogeochemistry of trace and rare earth elements in the Caviahue-Copahue Volcanic Complex

“…1). Here, different from the crater, a deep aquifer scrubs most soluble magmatic gases (HCl, HF) and reduces SO 2 to H 2 S (Panarello, 2002;Agusto, 2011;Barcelona et al, 2019;Tardani et al, 2021). Therefore, the SHW present acid (2 -3.5) to neutral pH and high EC (2,000 -7,500 μS/cm), and differ from VHS waters by presenting low F -(<0.05 -5 mg/L) and Cl -(<0.01 -40 mg/L) concentrations.…”

AMS and rock magnetism in the Caviahue-Copahue Volcanic Complex (Southern Andes): emission center, flow dynamics, and implications to the emplacement of non-welded PDCs

“…In this context, the CCVC composes one of the most active volcanic centers in the Andean belt, with several eruptive events in the last century (Caselli et al, 2016;Tassi et al, 2016). The particular setting of the CCVC attracted several studies in the recent decades, with a broad range of topics including geomorphology (e.g., Díaz, 2003;Báez et al, 2020a), geochemistry (e.g., Mazzoni and Licitra, 2000;Melnick et al, 2006;Varekamp et al, 2006), geochronology (e.g., Pesce, 1989;Melnicik et al, 2006) structural (e.g., Melnick et al, 2006;Velez et al, 2011;Folguera et al, 2016), geothermal (e.g., Barcelona et al, 2019), and AMS and paleomagnetism (e.g., Ort et al, 2014;Moncinhatto et al, 2019Moncinhatto et al, , 2020.…”