Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/589
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dc.contributor.authorallDe Gregorio, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.authorallDiliberto, I. S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.authorallGiammanco, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.authorallGurrieri, S.; stituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, Via Ugo La Malfa, 153–90146 Palermo, Italy;en
dc.contributor.authorallValenza, M.; Dipartimento di Chimica e Fisica della Terra ed Applicazioni, Universita` di Palermo, Via Archirafi, 36–90133 Palermo, Italyen
dc.date.accessioned2005-12-05T13:52:18Zen
dc.date.available2005-12-05T13:52:18Zen
dc.date.issued2002en
dc.identifier.urihttp://hdl.handle.net/2122/589en
dc.description.abstractEastern Sicily (southern Italy) is characterised by the presence of many natural gas emissions (mofettes, mud volcanoes). These gases are mostly carbon dioxide and methane, with minor amounts of helium, hydrogen, carbon monoxide and hydrocarbons. In this study, the extent and orientation of soil gas anomalies (He and CO2) were investigated on a wide area (approximately 110 km2) located just SW of Mt. Etna. From a structural point of view, this area lays on a typical foredeep–foreland system that marks the boundary between the southern part of the Eurasian plate and the northern part of the African plate in the central Mediterranean. No tectonic structure was revealed in this area by surface geological surveys. Very high soil emissions were found, and their spatial pattern reveals the existence of some active faults all directed about N508E. This direction coincides with that of two major fault systems that cut eastern Sicily and are evident, respectively, NE and SW of the study area. Soil gas data suggest that these fault systems are the expression of a single continuous structural line which is probably responsible for the past and present magma uprise in eastern Sicily. Isotopic values of carbon of CO2 suggest a minor contribution of organic carbon. Moreover, in the highest degassing sites the isotopic values of He found in association with CO2 (He abundance¼11–70 p.p.m.; R/Ra between 6.0 and 6.2) suggest that both gases are mantle derived. The extent of the areas affected by high gas emissions and the amounts of deep CO2 emitted in the investigated area (several hundred tonnes per day) may provide additional supporting evidence of a mantle upwelling taking place beneath this region.en
dc.description.sponsorshipGruppo Nazionale per la Vulcanologia Italy.en
dc.format.extent597 bytesen
dc.format.extent866788 bytesen
dc.format.mimetypetext/htmlen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.publisher.nameBlackwell Science Ltden
dc.relation.ispartofGeofluidsen
dc.relation.ispartofseries2 (2002)en
dc.subjectCO2en
dc.subjectdiffuse degassingen
dc.subjectSicilyen
dc.titleTectonic control over large-scale diffuse degassing in eastern Sicily (Italy)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber273–284en
dc.identifier.URLhttp://www.blackwell-synergy.com/servlet/useragent?func=showHomeen
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.01. Geochemical explorationen
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistryen
dc.subject.INGV04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonicsen
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dc.description.fulltextpartially_openen
dc.contributor.authorDe Gregorio, S.en
dc.contributor.authorDiliberto, I. S.en
dc.contributor.authorGiammanco, S.en
dc.contributor.authorGurrieri, S.en
dc.contributor.authorValenza, M.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italiaen
dc.contributor.departmentstituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, Via Ugo La Malfa, 153–90146 Palermo, Italy;en
dc.contributor.departmentDipartimento di Chimica e Fisica della Terra ed Applicazioni, Universita` di Palermo, Via Archirafi, 36–90133 Palermo, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
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item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia-
crisitem.author.deptDiSTeM, Universit a degli Studi di Palermo, Palermo, Italy-
crisitem.author.orcid0000-0001-7713-9105-
crisitem.author.orcid0000-0001-6729-2413-
crisitem.author.orcid0000-0003-2588-1441-
crisitem.author.orcid0000-0003-4085-0440-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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