Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8720
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dc.contributor.authorallFiebig, J.; University of Frankfurt a.M., Germaniaen
dc.contributor.authorallTassi, F.; Università di Firenzeen
dc.contributor.authorallD'Alessandro, W.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.authorallVaselli, O.; Università di Firenzeen
dc.contributor.authorallWoodland, A. B.; University of Frankfurt a.M., Germaniaen
dc.date.accessioned2013-06-19T08:49:05Zen
dc.date.available2013-06-19T08:49:05Zen
dc.date.issued2013-08en
dc.identifier.urihttp://hdl.handle.net/2122/8720en
dc.description.abstractThe genetic relationship between carbon-bearing species (CO, CO2, CH4, C2H6, C3H8, C2H4 and C3H6) was investigated in volcanic-hydrothermal gases emitted from Nisyros (Greece), Vesuvio, La Solfatara (Campi Flegrei) and Pantelleria (all Italy). Apparent carbon isotopic temperatures of the CH4-CO2 system are ~360°C at Nisyros, 420-460°C at Vesuvio, ~450°C at La Solfatara and ~540°C at Pantelleria. These temperatures are confirmed by measured propene/propane and H2/H2O concentration ratios. CH4 and CO2 equilibrate in the single liquid phase prior to the onset of boiling, whereas propene and propane attain equilibrium in the saturated water vapor phase. Boiling in these high-enthalpy hydrothermal systems might occur isothermally. Once vapor has been extracted from the parental liquid, CO/CO2 responds most sensitively to the temperature gradient encountered by the ascending gases. Our results imply that the CH4-CO2 isotopic geothermometer can provide reliable information about temperatures of deep hydrothermal liquids associated with volcanism. Propene/propane and H2/H2O concentration ratios should be measured along with the carbon isotopic composition of CO2 and CH4 to provide independent constraints on the geological significance of the apparent carbon isotopic temperatures.en
dc.language.isoEnglishen
dc.publisher.nameElsevier Science Limiteden
dc.relation.ispartofChemical geologyen
dc.relation.ispartofseries/351 (2013)en
dc.subjectHydrocarbonsen
dc.subjectHydrothermal fluidsen
dc.subjectVolcanoesen
dc.subjectGeothermometryen
dc.titleCarbon-bearing gas geothermometers for volcanic-hydrothermal systemsen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber66–75en
dc.subject.INGV03. Hydrosphere::03.04. Chemical and biological::03.04.05. Gasesen
dc.subject.INGV03. Hydrosphere::03.04. Chemical and biological::03.04.06. Hydrothermal systemsen
dc.identifier.doi10.1016/j.chemgeo.2013.05.006en
dc.description.obiettivoSpecifico1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attiveen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0009-2541en
dc.relation.eissn1872-6836en
dc.contributor.authorFiebig, J.en
dc.contributor.authorTassi, F.en
dc.contributor.authorD'Alessandro, W.en
dc.contributor.authorVaselli, O.en
dc.contributor.authorWoodland, A. B.en
dc.contributor.departmentUniversity of Frankfurt a.M., Germaniaen
dc.contributor.departmentUniversità di Firenzeen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.departmentUniversità di Firenzeen
dc.contributor.departmentUniversity of Frankfurt a.M., Germaniaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptGoethe University, Frankfurt a.M., Germany-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.deptEarth Science Dept., University of Florence, Via La Pira 4, Florence, 50121, Italy; (3) CNR - IGG, Via La Pira 4, Florence, 50121, Italy-
crisitem.author.deptGoethe-Universität, Frankfurt am Main, Germany-
crisitem.author.orcid0000-0001-5074-1462-
crisitem.author.orcid0000-0002-3319-4257-
crisitem.author.orcid0000-0003-1724-0388-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent03. Hydrosphere-
crisitem.classification.parent03. Hydrosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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