000136138 001__ 136138
000136138 005__ 20240719195437.0
000136138 0247_ $$2doi$$a10.1016/j.gexplo.2024.107538
000136138 0248_ $$2sideral$$a139127
000136138 037__ $$aART-2024-139127
000136138 041__ $$aeng
000136138 100__ $$aAsta, Maria P.
000136138 245__ $$aGeothermometrical calculations of thermal waters affected by secondary processes: The case of Sierra Elvira (Spain)
000136138 260__ $$c2024
000136138 5060_ $$aAccess copy available to the general public$$fUnrestricted
000136138 5203_ $$aGeothermometrical calculations in thermal systems are often limited by the presence of secondary processes that modify the chemistry of the deep reservoir fluid during the ascent to the surface (e.g., mixing, degasification). The effect of secondary processes can be avoided by applying some techniques to reconstruct the chemical equilibrium at depth and the fluid original composition. However, the reconstruction of thermal waters mixed with cold surficial waters is complicated when the dilution factors are unknown. For that case, here, we propose to use an approach consisting of the simulation of a concentration process that removed different amounts of water from the thermal solutions until the equilibrium temperatures of anhydrite and quartz converge for the waters affected by mixing in unknown proportions. Using classical geothermometers and geothermometrical modeling, including the water removal process and CO2 degasification, a temperature range of 78 ± 9 °C at depth has been established for the Sierra Elvira geothermal system whose waters are in chemical equilibrium with respect to calcite, dolomite, anhydrite, quartz, illite, pyrophyllite and beidellite-K. The good agreement in the temperatures obtained for the different thermal fluids of the system suggests a common reservoir for all of them. The methodology used in this study can be applied to other geothermal systems in carbonate rocks affected by mixing
000136138 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000136138 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000136138 700__ $$0(orcid)0000-0003-1463-1682$$aAuque, Luis F.$$uUniversidad de Zaragoza
000136138 700__ $$aGimeno, Maria J.
000136138 700__ $$aReyes-Carmona, Cristina
000136138 700__ $$aGantenbein, Aita
000136138 700__ $$aRosino, Jesús
000136138 700__ $$aDelgado-Huertas, Antonio
000136138 7102_ $$12000$$2685$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Petrología y Geoquímica
000136138 773__ $$g264 (2024), 107538 [14 pp.]$$pJ. geochem. explor.$$tJournal of Geochemical Exploration$$x0375-6742
000136138 8564_ $$s6616390$$uhttps://zaguan.unizar.es/record/136138/files/texto_completo.pdf$$yVersión publicada$$zinfo:eu-repo/date/embargoEnd/2026-07-15
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000136138 951__ $$a2024-07-19-18:27:59
000136138 980__ $$aARTICLE