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Geochemistry of gases and waters discharged by the mud volcanoes at Paternò, Mt. Etna (Italy)

Identifieur interne : 000314 ( Main/Exploration ); précédent : 000313; suivant : 000315

Geochemistry of gases and waters discharged by the mud volcanoes at Paternò, Mt. Etna (Italy)

Auteurs : G. Chiodini ; W. D'Alessandro ; F. Parello [Italie]

Source :

Bulletin of Volcanology [ 0258-8900 ] ; 1996-09-01.

RBID : ISTEX:4B6EF1DAD9F198C94EB3F1BA8E496C085838D8F9

English descriptors

KwdEn :
- Acqua, Acqua grassa, Acqua grassa spring, Acta, Acta volcanol, Analytical data, Appl geochem, Brine, Bull volcanol, Carbonate unit, Chiodini, Cioni, Cold manifestations, Deep aquifer, Detection limit, Different fractions, Different temperatures, Etna, Etna volcano, Etnean area, Gaseous phase, Geochemical, Geochemical surveillance, Geochim cosmochim acta, Geothermal, Giggenbach, Grassa, Hydrothermal, Hydrothermal system, Isotopic composition, Large area, Lateral extent, Liquid phase, Liquid phases, Other samples, Parello, Patern, Pco2, Pco2 values, Relative contents, Salato, Sedimentary formations, Separation model, Separation processes, Simeto, Soil degassing, Ssgs line, Stadio, Stadio gases, Theoretical points, Triangular diagram, Vallone, Vallone salato, Vapor phase, Volcanic, Volcanic activity, Volcanic structure, Volcano, Volcanol.
Teeft :
- Acqua, Acqua grassa, Acqua grassa spring, Acta, Acta volcanol, Analytical data, Appl geochem, Brine, Bull volcanol, Carbonate unit, Chiodini, Cioni, Cold manifestations, Deep aquifer, Detection limit, Different fractions, Different temperatures, Etna, Etna volcano, Etnean area, Gaseous phase, Geochemical, Geochemical surveillance, Geochim cosmochim acta, Geothermal, Giggenbach, Grassa, Hydrothermal, Hydrothermal system, Isotopic composition, Large area, Lateral extent, Liquid phase, Liquid phases, Other samples, Parello, Patern, Pco2, Pco2 values, Relative contents, Salato, Sedimentary formations, Separation model, Separation processes, Simeto, Soil degassing, Ssgs line, Stadio, Stadio gases, Theoretical points, Triangular diagram, Vallone, Vallone salato, Vapor phase, Volcanic, Volcanic activity, Volcanic structure, Volcano, Volcanol.

Abstract

Abstract: Approximately 20 km south of Mt. Etna craters, at the contact between volcanic and sedimentary formations, three mud volcanoes discharge CO2-rich gases and Na–Cl brines. The compositions of gas and liquid phases indicate that they are fed by a hydrothermal system for which temperatures of 100–150 °C were estimated by means of both gas and solute geothermometry. The hydrothermal system may be associated with CO2-rich groundwaters over a large area extending from the central part of Etna to the mud volcanoes. Numerous data on the He, CH4, CO2 composition of the gases of the three manifestations, sampled over the past 5 years, indicate clearly that variations are due to separation processes of a CO2-rich gas phase from the liquid. The effects of these processes have to be taken into account in the interpretation of the monitoring data collected for the geochemical surveillance of Etna volcano.

Url:

https://api.istex.fr/document/4B6EF1DAD9F198C94EB3F1BA8E496C085838D8F9/fulltext/pdf

DOI: 10.1007/s004450050125

Affiliations:

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Le document en format XML

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<term>Analytical data</term>
<term>Appl geochem</term>
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<term>Bull volcanol</term>
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<term>Chiodini</term>
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<term>Cold manifestations</term>
<term>Deep aquifer</term>
<term>Detection limit</term>
<term>Different fractions</term>
<term>Different temperatures</term>
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<term>Etna volcano</term>
<term>Etnean area</term>
<term>Gaseous phase</term>
<term>Geochemical</term>
<term>Geochemical surveillance</term>
<term>Geochim cosmochim acta</term>
<term>Geothermal</term>
<term>Giggenbach</term>
<term>Grassa</term>
<term>Hydrothermal</term>
<term>Hydrothermal system</term>
<term>Isotopic composition</term>
<term>Large area</term>
<term>Lateral extent</term>
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<term>Separation model</term>
<term>Separation processes</term>
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<term>Ssgs line</term>
<term>Stadio</term>
<term>Stadio gases</term>
<term>Theoretical points</term>
<term>Triangular diagram</term>
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<term>Volcanic activity</term>
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<term>Different temperatures</term>
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<term>Geochemical surveillance</term>
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<term>Lateral extent</term>
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<term>Pco2</term>
<term>Pco2 values</term>
<term>Relative contents</term>
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<term>Separation model</term>
<term>Separation processes</term>
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<term>Triangular diagram</term>
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<front><div type="abstract" xml:lang="en">Abstract:  Approximately 20 km south of Mt. Etna craters, at the contact between volcanic and sedimentary formations, three mud volcanoes discharge CO2-rich gases and Na–Cl brines. The compositions of gas and liquid phases indicate that they are fed by a hydrothermal system for which temperatures of 100–150  °C were estimated by means of both gas and solute geothermometry. The hydrothermal system may be associated with CO2-rich groundwaters over a large area extending from the central part of Etna to the mud volcanoes. Numerous data on the He, CH4, CO2 composition of the gases of the three manifestations, sampled over the past 5 years, indicate clearly that variations are due to separation processes of a CO2-rich gas phase from the liquid. The effects of these processes have to be taken into account in the interpretation of the monitoring data collected for the geochemical surveillance of Etna volcano.</div>
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Geochemistry of gases and waters discharged by the mud volcanoes at Paternò, Mt. Etna (Italy)

Geochemistry of gases and waters discharged by the mud volcanoes at Paternò, Mt. Etna (Italy)

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri