Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina)
The north-western sector of Caviahue caldera (Argentina), close to the active volcanic system of Copahue, is characterized by the presence of several hydrothermal sites that host numerous fumarolic emissions, anomalous soil diffuse degassing of CO 2 and hot soils. In March 2014, measurements of soil...
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todo:paper_03770273_v304_n_p294_Chiodini2023-10-03T15:31:23Z Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina) Chiodini, G. Cardellini, C. Lamberti, M.C. Agusto, M. Caselli, A. Liccioli, C. Tamburello, G. Tassi, F. Vaselli, O. Caliro, S. Caviahue Caldera Copahue Volcano CO 2 diffuse degasing Thermal energy Carbon Carbon dioxide Geothermal fields Phase equilibria Soils Thermal energy Volcanoes Caviahue Caldera Copahue Diffuse degassing Geothermal reservoir Hydrothermal areas Hydrothermal system Magmatic intrusions Magmatic signatures Gases caldera carbon dioxide carbon emission degassing fumarole hydrothermal system soil carbon Copahue Neuquen Southern Volcanic Zone The north-western sector of Caviahue caldera (Argentina), close to the active volcanic system of Copahue, is characterized by the presence of several hydrothermal sites that host numerous fumarolic emissions, anomalous soil diffuse degassing of CO 2 and hot soils. In March 2014, measurements of soil CO 2 fluxes in 5 of these sites (namely, Las Máquinas, Las Maquinitas I, Las Maquinitas II, Anfiteatro, and Termas de Copahue) allowed an estimation that ~165t of deeply derived CO 2 is daily released. The gas source is likely related to a relatively shallow geothermal reservoir containing a single vapor phase as also suggested by both the geochemical data from the 3 deep wells drilled in the 1980s and gas geoindicators applied to the fumarolic discharges. Gas equilibria within the H-C-O gas system indicate the presence of a large, probably unique, single phase vapor zone at 200-210°C feeding the hydrothermal manifestations of Las Máquinas, Las Maquinitas I and II and Termas de Copahue. A natural thermal release of 107MW was computed by using CO 2 as a tracer of the original vapor phase. The magmatic signature of the incondensable fumarolic gases, the wide expanse of the hydrothermal areas and the remarkable high amount of gas and heat released by fluid expulsion seem to be compatible with an active magmatic intrusion beneath this portion of the Caviahue caldera. © 2015 Elsevier B.V.. Fil:Agusto, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Caselli, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03770273_v304_n_p294_Chiodini |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Caviahue Caldera Copahue Volcano CO 2 diffuse degasing Thermal energy Carbon Carbon dioxide Geothermal fields Phase equilibria Soils Thermal energy Volcanoes Caviahue Caldera Copahue Diffuse degassing Geothermal reservoir Hydrothermal areas Hydrothermal system Magmatic intrusions Magmatic signatures Gases caldera carbon dioxide carbon emission degassing fumarole hydrothermal system soil carbon Copahue Neuquen Southern Volcanic Zone |
| spellingShingle |
Caviahue Caldera Copahue Volcano CO 2 diffuse degasing Thermal energy Carbon Carbon dioxide Geothermal fields Phase equilibria Soils Thermal energy Volcanoes Caviahue Caldera Copahue Diffuse degassing Geothermal reservoir Hydrothermal areas Hydrothermal system Magmatic intrusions Magmatic signatures Gases caldera carbon dioxide carbon emission degassing fumarole hydrothermal system soil carbon Copahue Neuquen Southern Volcanic Zone Chiodini, G. Cardellini, C. Lamberti, M.C. Agusto, M. Caselli, A. Liccioli, C. Tamburello, G. Tassi, F. Vaselli, O. Caliro, S. Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina) |
| topic_facet |
Caviahue Caldera Copahue Volcano CO 2 diffuse degasing Thermal energy Carbon Carbon dioxide Geothermal fields Phase equilibria Soils Thermal energy Volcanoes Caviahue Caldera Copahue Diffuse degassing Geothermal reservoir Hydrothermal areas Hydrothermal system Magmatic intrusions Magmatic signatures Gases caldera carbon dioxide carbon emission degassing fumarole hydrothermal system soil carbon Copahue Neuquen Southern Volcanic Zone |
| description |
The north-western sector of Caviahue caldera (Argentina), close to the active volcanic system of Copahue, is characterized by the presence of several hydrothermal sites that host numerous fumarolic emissions, anomalous soil diffuse degassing of CO 2 and hot soils. In March 2014, measurements of soil CO 2 fluxes in 5 of these sites (namely, Las Máquinas, Las Maquinitas I, Las Maquinitas II, Anfiteatro, and Termas de Copahue) allowed an estimation that ~165t of deeply derived CO 2 is daily released. The gas source is likely related to a relatively shallow geothermal reservoir containing a single vapor phase as also suggested by both the geochemical data from the 3 deep wells drilled in the 1980s and gas geoindicators applied to the fumarolic discharges. Gas equilibria within the H-C-O gas system indicate the presence of a large, probably unique, single phase vapor zone at 200-210°C feeding the hydrothermal manifestations of Las Máquinas, Las Maquinitas I and II and Termas de Copahue. A natural thermal release of 107MW was computed by using CO 2 as a tracer of the original vapor phase. The magmatic signature of the incondensable fumarolic gases, the wide expanse of the hydrothermal areas and the remarkable high amount of gas and heat released by fluid expulsion seem to be compatible with an active magmatic intrusion beneath this portion of the Caviahue caldera. © 2015 Elsevier B.V.. |
| format |
JOUR |
| author |
Chiodini, G. Cardellini, C. Lamberti, M.C. Agusto, M. Caselli, A. Liccioli, C. Tamburello, G. Tassi, F. Vaselli, O. Caliro, S. |
| author_facet |
Chiodini, G. Cardellini, C. Lamberti, M.C. Agusto, M. Caselli, A. Liccioli, C. Tamburello, G. Tassi, F. Vaselli, O. Caliro, S. |
| author_sort |
Chiodini, G. |
| title |
Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina) |
| title_short |
Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina) |
| title_full |
Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina) |
| title_fullStr |
Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina) |
| title_full_unstemmed |
Carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at Copahue-Caviahue Volcanic Complex (Argentina) |
| title_sort |
carbon dioxide diffuse emission and thermal energy release from hydrothermal systems at copahue-caviahue volcanic complex (argentina) |
| url |
http://hdl.handle.net/20.500.12110/paper_03770273_v304_n_p294_Chiodini |
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