Soil CO2 flux baseline in Planchón – Peteroa Volcanic Complex, Southern Andes, Argentina - Chile

Carbon dioxide diffuse degassing as a tool for computing the thermal energy release at Cerro Blanco Geothermal System, Southern Puna (NW Argentina)

“…Considering the CBC geothermal potential, the magnitude of thermal energy release resulted to be strikingly low, supporting the presence of a highly efficient cap-rock for this geothermal system. The CO 2 flux emission calculated for CBGS (> 180 kg d -1 ) is significantly lower than CO 2 diffuse emissions studied in other volcanichydrothermal areas from the Southern Andean range (100 t d -1 from the Caviahue -Copahue Volcanic Complex and 6.5 t d-1 from the Planchón -Peteroa Volcanic Complex; Lamberti et al, 2019Lamberti et al, , 2020. Unfortunately, there are no previous studies of CO 2 emissions from geothermal systems in the Central Volcanic Zone.…”

Deep Regional Fluid Pathways in an Extensional Setting: The Role of Transfer Zones in the Hot and Cold Degassing Areas of the Larderello Geothermal System (Northern Apennines, Italy)

“…Most of them are characterized by more positive values, also with respect to the isotopic fingerprint of the fluids hosted in the Larderello geothermal reservoirs (Gherardi et al., 2005). These differences between the δ 13 C values of the CO 2 of the interstitial gases and that of the free gases can be derived by secondary fractionation processes, as observed in many geothermal/volcanic environments such as at Solfatara (Italy; Federico et al., 2010), Vulcano (Italy; Camarda et al., 2007), Planchón‐Peteroa Volcanic Complex (Chile; Lamberti et al., 2021), and Ohaaki (New Zealand; Rissmann et al., 2012) among the others.…”

Eleven‐Year Survey of the Magmatic‐Hydrothermal Fluids From Peteroa Volcano: Identifying Precursory Signals of the 2018–2019 Eruption

“…Previous studies (Aguilera et al., 2016; Benavente, 2010; Tassi et al., 2016) have shown that gases from fumarolic vents have outlet temperatures up to 90°C and are dominated by water vapor (up to 85%) with significant concentrations of acid gases (CO 2 , SO 2 , H 2 S, HCl, and HF). In addition, a profuse diffuse soil gas emission of over 6 tonnes/day of CO 2 has been reported between Craters 2 and 4 (Lamberti et al., 2021). Recent observations (Agusto et al., 2021) have also documented a new (ephemeral) fumarolic field between Craters 1 and 3 with gas compositions similar to those previously described.…”

“…Two thermal areas are also recognized at the foothills of the eastern flank of PPVC, which host thermal waters (up to 50°C; pH 5–7), bubbling gases with a CO 2 ‐dominated composition (Benavente, 2010; Llano et al., 2021; Nogués, 2019) and soil diffuse CO 2 anomalies (Lamberti et al., 2021) with a structural control (Vigide et al., 2020).…”