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The hydrothermal system of the Domuyo volcanic complex (Argentina): A conceptual model based on new geochemical and isotopic evidences.

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Title: The hydrothermal system of the Domuyo volcanic complex (Argentina): A conceptual model based on new geochemical and isotopic evidences.
Authors: Tassi, F.1,2 franco.tassi@unifi.it, Liccioli, C.3, Agusto, M.4, Chiodini, G.5, Vaselli, O.1,2, Calabrese, S.6, Pecoraino, G.7, Tempesti, L.1, Caponi, C.1, Fiebig, J.8, Caliro, S.9, Caselli, A.3
Source: Journal of Volcanology & Geothermal Research. Dec2016, Vol. 328, p198-209. 12p.
Subjects: Geochemistry, Volcanoes, Hydrothermal vents, Isotopes, Geothermometry, Magmatism
Geographic Terms: Argentina
Abstract: The Domuyo volcanic complex (Neuquén Province, Argentina) hosts one of the most promising geothermal systems of Patagonia, giving rise to thermal manifestations discharging hot and Cl − -rich fluids. This study reports a complete geochemical dataset of gas and water samples collected in three years (2013, 2014 and 2015) from the main fluid discharges of this area. The chemical and isotopic composition (δD-H 2 O and δ 18 O-H 2 O) of waters indicates that rainwater and snow melting are the primary recharge of a hydrothermal reservoir located at relative shallow depth (400–600 m) possibly connected to a second deeper (2–3 km) reservoir. Reactive magmatic gases are completely scrubbed by the hydrothermal aquifer(s), whereas interaction of meteoric waters at the surface causes a significant air contamination and dilution of the fluid discharges located along the creeks at the foothill of the Cerro Domuyo edifice. Thermal discharges located at relatively high altitude (~ 3150 m a.s.l.), namely Bramadora, are less affected by this process, as also shown by their relatively high R/Ra values (up to 6.91) pointing to the occurrence of an actively degassing magma batch located at an unknown depth. Gas and solute geothermometry suggests equilibrium temperatures up to 220–240 °C likely referred to the shallower hydrothermal reservoir. These results, confirming the promising indications of the preliminary surveys carried out in the 1980′s, provide useful information for a reliable estimation of the geothermal potential of this extinct volcanic system, although a detailed geophysical measurements is required for the correct estimation of depth and dimensions of the fluid reservoir(s). [ABSTRACT FROM AUTHOR]
Copyright of Journal of Volcanology & Geothermal Research is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: The hydrothermal system of the Domuyo volcanic complex (Argentina): A conceptual model based on new geochemical and isotopic evidences.
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  Data: <searchLink fieldCode="AR" term="%22Tassi%2C+F%2E%22">Tassi, F.</searchLink><relatesTo>1,2</relatesTo><i> franco.tassi@unifi.it</i><br /><searchLink fieldCode="AR" term="%22Liccioli%2C+C%2E%22">Liccioli, C.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Agusto%2C+M%2E%22">Agusto, M.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Chiodini%2C+G%2E%22">Chiodini, G.</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Vaselli%2C+O%2E%22">Vaselli, O.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Calabrese%2C+S%2E%22">Calabrese, S.</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Pecoraino%2C+G%2E%22">Pecoraino, G.</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Tempesti%2C+L%2E%22">Tempesti, L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Caponi%2C+C%2E%22">Caponi, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Fiebig%2C+J%2E%22">Fiebig, J.</searchLink><relatesTo>8</relatesTo><br /><searchLink fieldCode="AR" term="%22Caliro%2C+S%2E%22">Caliro, S.</searchLink><relatesTo>9</relatesTo><br /><searchLink fieldCode="AR" term="%22Caselli%2C+A%2E%22">Caselli, A.</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Volcanology+%26+Geothermal+Research%22">Journal of Volcanology & Geothermal Research</searchLink>. Dec2016, Vol. 328, p198-209. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Geochemistry%22">Geochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Volcanoes%22">Volcanoes</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrothermal+vents%22">Hydrothermal vents</searchLink><br /><searchLink fieldCode="DE" term="%22Isotopes%22">Isotopes</searchLink><br /><searchLink fieldCode="DE" term="%22Geothermometry%22">Geothermometry</searchLink><br /><searchLink fieldCode="DE" term="%22Magmatism%22">Magmatism</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Argentina%22">Argentina</searchLink>
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  Data: The Domuyo volcanic complex (Neuquén Province, Argentina) hosts one of the most promising geothermal systems of Patagonia, giving rise to thermal manifestations discharging hot and Cl − -rich fluids. This study reports a complete geochemical dataset of gas and water samples collected in three years (2013, 2014 and 2015) from the main fluid discharges of this area. The chemical and isotopic composition (δD-H 2 O and δ 18 O-H 2 O) of waters indicates that rainwater and snow melting are the primary recharge of a hydrothermal reservoir located at relative shallow depth (400–600 m) possibly connected to a second deeper (2–3 km) reservoir. Reactive magmatic gases are completely scrubbed by the hydrothermal aquifer(s), whereas interaction of meteoric waters at the surface causes a significant air contamination and dilution of the fluid discharges located along the creeks at the foothill of the Cerro Domuyo edifice. Thermal discharges located at relatively high altitude (~ 3150 m a.s.l.), namely Bramadora, are less affected by this process, as also shown by their relatively high R/Ra values (up to 6.91) pointing to the occurrence of an actively degassing magma batch located at an unknown depth. Gas and solute geothermometry suggests equilibrium temperatures up to 220–240 °C likely referred to the shallower hydrothermal reservoir. These results, confirming the promising indications of the preliminary surveys carried out in the 1980′s, provide useful information for a reliable estimation of the geothermal potential of this extinct volcanic system, although a detailed geophysical measurements is required for the correct estimation of depth and dimensions of the fluid reservoir(s). [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Volcanology & Geothermal Research is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.jvolgeores.2016.11.003
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 198
    Subjects:
      – SubjectFull: Geochemistry
        Type: general
      – SubjectFull: Volcanoes
        Type: general
      – SubjectFull: Hydrothermal vents
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      – SubjectFull: Isotopes
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      – SubjectFull: Geothermometry
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      – SubjectFull: Magmatism
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      – SubjectFull: Argentina
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              Text: Dec2016
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