Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7421
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dc.contributor.authorallMormone, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.authorallPiochi, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.authorallBellatreccia, F.; Dipartimento di Scienze Geologiche, Università Roma Tre, Roma, Italyen
dc.contributor.authorallDe Astis, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallMoretti, R.; Centro Interdipartimentale di Ricerca in Ingegneria Ambientale (CIRIAM) & Dipartimento di Ingegneria Civile, Seconda Università degli Studi di Napoli, Aversa (CE), Italyen
dc.contributor.authorallDella Ventura, G.; Dipartimento di Scienze Geologiche, Università Roma Tre, Roma, Italyen
dc.contributor.authorallCavallo, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallMangiacapra, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.date.accessioned2012-01-19T14:26:38Zen
dc.date.available2012-01-19T14:26:38Zen
dc.date.issued2011-06-13en
dc.identifier.urihttp://hdl.handle.net/2122/7421en
dc.description.abstractWe present a study of olivine-hosted glass/melt inclusions (MIs) in the most primitive rocks erupted at Procida Island, within the Phlegraean Volcanic District (PVD), Southern Italy. MIs were analyzed by combined Scanning Electron Microscopy coupled with Energy Dispersive X-ray-detectors, Wavelength Dispersive X-rayequipped Electron Microprobe and Fourier Transform Infrared (FT-IR) Spectroscopy; notably, the novel Focal- Plane-Array mode provided high-resolution FT-IR images evidencing the distribution of the C–H–O species across samples. Olivines range in composition from Fo85 to Fo90, do not show chemical zoning and are totally anhydrous. The majority of the MIs are glassy, while only few are completely crystallized. Some MIs, however, show the occurrence of crystal nuclei, i.e., nano- to micro-sized pyroxenes and oxides, and appear as lowcrystallized MIs. The glass of crystal-free and low-crystallized MIs shows K-affinity and a compositional range along the basalt, trachy-basalt, shoshonite, tephrite basanite and phono-tephrite array. H2O and CO2 contents up to 2.69 wt.% and 2653 ppm, respectively, define a major degassing trend with small isobaric deviations. The collected data allow recalculating entrapment pressures from ~350 MPa to b50 MPa and suggest that the magma ascent was dominated by degassing. Crystallization was aminor process, likely also consequent to local CO2-fluxing. Mingling occurred between variable degassed and crystallized magma portions during decompression. The geochemical and isotopic data of Procida glasses and rocks, and the compositional relationship between our MIs and those from slightly more evolved and radiogenic Phlegraean products, indicate that Procida basalts are an adequate parental end-member for the PVD. Our data suggest that a CO2- rich magma source was stored at depths of at least 13–14 km (i.e., 350 MPa) beneath the PVD. Fast ascent of magma batches directly started from this depth shortly before PVD trachy-basaltic to shoshonitic eruptions. Such results have implication on volcanic hazard assessment in the PVD area.en
dc.language.isoEnglishen
dc.relation.ispartofChemical Geologyen
dc.relation.ispartofseries/287(2011)en
dc.subjectMelt inclusionsen
dc.subjectPhlegraean Volcanic Districten
dc.subjectCO2-rich magma sourceen
dc.subjectDegassingen
dc.subjectFluxingen
dc.titleA CO2-rich magma source beneath the Phlegraean Volcanic District (Southern Italy):en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber66-80en
dc.subject.INGV02. Cryosphere::02.01. Permafrost::02.01.08. Instruments and techniquesen
dc.subject.INGV04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processesen
dc.subject.INGV04. Solid Earth::04.01. Earth Interior::04.01.04. Mineral physics and properties of rocksen
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.05. Mineralogy and petrologyen
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.07. Rock geochemistryen
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.11. Instruments and techniquesen
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.03. Magmasen
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocksen
dc.subject.INGV05. General::05.02. Data dissemination::05.02.01. Geochemical dataen
dc.subject.INGV05. General::05.02. Data dissemination::05.02.03. Volcanic eruptionsen
dc.identifier.doi10.1016/j.chemgeo.2011.05.019en
dc.description.obiettivoSpecifico3.5. Geologia e storia dei vulcani ed evoluzione dei magmien
dc.description.obiettivoSpecifico3.6. Fisica del vulcanismoen
dc.description.obiettivoSpecifico5.3. TTC - Banche dati vulcanologicheen
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorMormone, A.en
dc.contributor.authorPiochi, M.en
dc.contributor.authorBellatreccia, F.en
dc.contributor.authorDe Astis, G.en
dc.contributor.authorMoretti, R.en
dc.contributor.authorDella Ventura, G.en
dc.contributor.authorCavallo, A.en
dc.contributor.authorMangiacapra, A.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.departmentDipartimento di Scienze Geologiche, Università Roma Tre, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentCentro Interdipartimentale di Ricerca in Ingegneria Ambientale (CIRIAM) & Dipartimento di Ingegneria Civile, Seconda Università degli Studi di Napoli, Aversa (CE), Italyen
dc.contributor.departmentDipartimento di Scienze Geologiche, Università Roma Tre, Roma, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
item.openairetypearticle-
item.grantfulltextrestricted-
item.fulltextWith Fulltext-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
crisitem.classification.parent02. Cryosphere-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent05. General-
crisitem.classification.parent05. General-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia-
crisitem.author.deptUniversità Roma Tre-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptCentro Interdipartimentale di Ricerche in Ingegneria Ambientale, Seconda Università di Napoli, Naples, Italy.-
crisitem.author.deptDipartimento di Scienze Geologiche Università Roma Tre-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia-
crisitem.author.orcid0000-0003-4214-1998-
crisitem.author.orcid0000-0003-2031-5192-
crisitem.author.orcid0000-0001-6277-961X-
crisitem.author.orcid0000-0001-8393-923X-
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.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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