Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/343
DC Field | Value | Language |
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dc.contributor.authorall | Grassa, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Capasso, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Favara, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Inguaggiato, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Faber, E.; Federal Institute for Geosciences and Natural Resources, Hannover, Germany | en |
dc.contributor.authorall | Valenza, M.; Dipartimento CFTA, Universita` di Palermo, Palermo, Italy | en |
dc.date.accessioned | 2005-08-04T12:17:45Z | en |
dc.date.available | 2005-08-04T12:17:45Z | en |
dc.date.issued | 2004 | en |
dc.identifier.uri | http://hdl.handle.net/2122/343 | en |
dc.description.abstract | Chemical and isotopic data have been used as geochemical tracers for a genetic characterization of hydrocarbon gases from a total of eleven manifestations located in Eastern and Central-Southern Sicily (Italy). The molecular analysis shows that almost all the samples are enriched in methane (up to 93.2% Vol.), with the exception of four gas samples collected around Mt. Etna showing high mantle-derived CO2 content. Methane isotope signatures suggest that these are thermogenic gases or a mixture between thermogenic gases and microbial gases. Although samples from some mud volcanoes in Southern Sicily (Macalube di Aragona) show isotope signatures consistent with a mixing model between thermogenic and microbial, by combining the molecular compositions (C1/(C2 + C3))and the methane isotope ratios (d13C1), such a process seems to be excluded. Therefore, the occurrence of secondary post-genetic processes should be invoked. Two main hypotheses have been considered: the first hypothesis includes that the gas is produced by microbial activity and altered post-genetically by microbial oxidation of methane, while according to the second hypothesis thermogenic gas have modified their molecular ratios due to vertical migration. | en |
dc.format.extent | 503 bytes | en |
dc.format.extent | 1041380 bytes | en |
dc.format.mimetype | text/html | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Geophysical Research Letters | en |
dc.relation.ispartofseries | 31 (2004) | en |
dc.subject | Isotopic composition/chemistry | en |
dc.subject | Organic geochemistry | en |
dc.title | Molecular and isotopic composition of free hydrocarbon gases from Sicily, Italy | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | L06607 | en |
dc.identifier.URL | http://www.agu.org/ | en |
dc.subject.INGV | 03. Hydrosphere::03.04. Chemical and biological::03.04.06. Hydrothermal systems | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.01. Gases | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.01. Geochemical data | en |
dc.identifier.doi | 10.1029/2003GL019362 | en |
dc.relation.references | Bernard, B. B., J. M. Brooks, and W. M. Sackett (1978), Light hydrocarbons in recent Texas continental shelf and slope sediments, J. Geophys. Res., 83, 4053–4061. Caracausi,A., R. Favara, S. Giammanco, F. Italiano, A. Paonita,G. Pecoraino, A. Rizzo, and P. M. Nuccio (2003), Mount Etna: Geochemical signals of magma ascent and unusually extensive plumbing system, Geophys. Res. Lett., 30(2), 1057, doi:10.1029/2002GL015463. Chiodini, G., and F. Parello (1996), Geochemistry of gases and waters discharged by the mud volcanoes at Paterno` , Mt. Etna (Italy), Bull. Volcanol., 58, 51–58. D’Alessandro, W., S. De Gregorio, G. Dongarra`, S. Gurrieri, F. Parello, and B. Parisi (1997), Chemical and isotopic characterization of the gases of Mount Etna (Italy), J. Volcanol. Geotherm. Res., 78, 65–76. Etiope, G., A. Caracausi, R. Favara, F. Italiano, and C. Baciu (2002), Methane emission from the mud volcanoes of Sicily (Italy), Geophys. Res. Lett., 29(8), 1215, doi:10.1029/2001GL014340. Favara, R., C. Gioia, F. Grassa, S. Inguaggiato, F. Proietto, and M. Valenza (2001), Studio geochimico delle manifestazioni fluide presenti nell’area della riserva naturale integrale "Maccalube di Aragona," Nat, Siciliano, 25, 137–154. Giammanco, S., S. Inguaggiato, and M. Valenza (1998), Soil and fumarole gases of Mount Etna: Geochemistry and relations with volcanic activity, J. Volcanol. Geotherm. Res., 81, 297–310. Marty, B., T. Trull, P. Lussiez, I. Basile, and J.-C. Tanguy (1994), He, Ar,O, Sr and Nd isotope constraints on the origin and evolution of Mount Etna magmatism, Earth Planet. Sci. Lett., 126, 23–39. Parello, F., W. D’Alessandro, G. Dongarra`, and P. Bonfanti (1995), Subsurface gases in some sites of the Mount Etna area (Sicily), Acta Volcanol., 7, 35–42. Prinzhofer, A., and E. Pernaton (1997), Isotopically light methane in natural gases: Bacterial imprint or diffusive fracionation?, Chem. Geol., 142,193–200. Schoell, M. (1980), The hydrogen and carbon isotopic composition of methane from natural gases of various origins, Geochim. Cosmochim. Acta, 44, 649–661. Schoell, M. (1983), Genetic characterization of natural gases, Am. Assoc. Pet. Geol. Bull., 67, 2225–2238. Whiticar, M. J. (1999), Carbon and hydrogen isotope systematics of bacterial formation and oxidation of methane, Chem. Geol., 161, 291–314. Whiticar, M. J., and E. Faber (1986), Methane oxidation in sediment and water column environments—Isotope evidences, Org. Geochem., 10, 759–768. Zhang, T., and B. M. Krooss (2001), Experimental investigation on the carbon isotope fractionation of methane during gas migration by diffusion through sedimentary rocks at elevated temperature and pressure,Geochim. Cosmochim. Acta, 65, 2723–2742. | en |
dc.description.fulltext | partially_open | en |
dc.contributor.author | Grassa, F. | en |
dc.contributor.author | Capasso, G. | en |
dc.contributor.author | Favara, R. | en |
dc.contributor.author | Inguaggiato, S. | en |
dc.contributor.author | Faber, E. | en |
dc.contributor.author | Valenza, M. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | Federal Institute for Geosciences and Natural Resources, Hannover, Germany | en |
dc.contributor.department | Dipartimento CFTA, Universita` di Palermo, Palermo, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | Federal Institute for Geosciences and Natural Resources, Stilleweg 2, Hannover, Germany | - |
crisitem.author.dept | DiSTeM, Universit a degli Studi di Palermo, Palermo, Italy | - |
crisitem.author.orcid | 0000-0001-5043-792X | - |
crisitem.author.orcid | 0000-0002-0890-7948 | - |
crisitem.author.orcid | 0000-0003-4588-2935 | - |
crisitem.author.orcid | 0000-0003-3726-9946 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 03. Hydrosphere | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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