Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/5069
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dc.contributor.authorallFiebig, J.; Goethe-Universität, Frankfurt am Main, Germanyen
dc.contributor.authorallWoodland, A. B.; Goethe-Universität, Frankfurt am Main, Germanyen
dc.contributor.authorallD'Alessandro, W.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.authorallPüttmann, W.; Goethe-Universität, Frankfurt am Main, Germanyen
dc.date.accessioned2009-06-06T17:55:43Zen
dc.date.available2009-06-06T17:55:43Zen
dc.date.issued2009-06en
dc.identifier.urihttp://hdl.handle.net/2122/5069en
dc.description.abstractThermogenic hydrocarbons entirely deriving from the thermal degradation of organic matter usually exhibit methane to ethane plus propane ratios smaller than 100. We present hydrocarbon distribution data of continental hydrothermal gases, whose methane has been independently identifi ed to derive from the abiogenic reduction of CO2. We fi nd that excess amounts of methane with respect to thermogenic hydrocarbon distributions are characteristic for the investigated gases. A similar pattern is observed for well discharges whose temperatures are too high to support any microbially mediated methanogenesis. These findings strongly suggest that abiogenic methane production in continental-hydrothermal systems is a more widespread process than previously assumed. The maximum contribution of such emissions to the modern atmospheric CH4 budget is estimated at ~1%.en
dc.language.isoEnglishen
dc.publisher.nameGeological Society of Americaen
dc.relation.ispartofGeologyen
dc.relation.ispartofseries6/37(2009)en
dc.subjectmethaneen
dc.subjectisotopic compositionen
dc.subjectabiogenic hydrocarbonsen
dc.titleExcess methane in continental hydrothermal emissions is abiogenicen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber495–498en
dc.identifier.URLhttp://geology.gsapubs.org/cgi/content/abstract/37/6/495en
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistryen
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.01. Gasesen
dc.identifier.doi10.1130/G25598A.1en
dc.description.obiettivoSpecifico1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attiveen
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorFiebig, J.en
dc.contributor.authorWoodland, A. B.en
dc.contributor.authorD'Alessandro, W.en
dc.contributor.authorPüttmann, W.en
dc.contributor.departmentGoethe-Universität, Frankfurt am Main, Germanyen
dc.contributor.departmentGoethe-Universität, Frankfurt am Main, Germanyen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.departmentGoethe-Universität, Frankfurt am Main, Germanyen
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.deptGoethe-Universität, Frankfurt am Main, Germany-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.deptGoethe-Universität, Frankfurt am Main, Germany-
crisitem.author.orcid0000-0001-5074-1462-
crisitem.author.orcid0000-0003-1724-0388-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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