Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7339
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dc.contributor.authorallFreda, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallGaeta, M.; Sapienza Università di Romaen
dc.contributor.authorallGiaccio, B.; IGAG-CNRen
dc.contributor.authorallMarra, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallPalladino, D.; Sapienza Università di Romaen
dc.contributor.authorallScarlato, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallSottili, G.; IGAG-CNRen
dc.date.accessioned2012-01-17T11:28:03Zen
dc.date.available2012-01-17T11:28:03Zen
dc.date.issued2011en
dc.identifier.urihttp://hdl.handle.net/2122/7339en
dc.description.abstractGene rally, the intensity and magnitude of explosive volcanic activity increase in parallel with SiO2 content. Pyro clasti cflow-forming eruptions in the Colli Albani ultrapotassic volcanic district (Italy) repres ent the most striking exception on a global scale, with volumes on the order of tens of cubic kilometres and K-foiditic compositions (SiO2 even<42 wt.%). Here, we reconstruct the pre-eruptive scenario and event dynamics of the ~456 ka Pozzolane Rosse (PR) eruption, the largest mafic explosive event of the Colli Albani district. In particular, we focus on the driving mechanisms for the unusually explosive eruption of a low-viscosity, mafic magma. Geologic, petrographic and geochemical data with mass balance calculations, supported by experimental data for Colli Albani magma compositions, provide evidence for significant ingestion of carbonate wall rocks by the Pozzolane Rosse K-foiditic magma. Moreover, the scattered occurrence of cored bombs in Pozzolane Rosse pyroclastic-flow deposits records carbonate entrainment even at the eruptive time scale, as also tested quantitatively by thermal modelling of magma–carbonate interaction and carbonate assimilation experiments. We suggest that the addition of free CO2 from decarbonation of country rocks was the major factor controlling magma explosivity. High CO2 activity in the volatile component, coupled with magma depressurisation, produced extensive leucite crystallisation at short time scal s, resulting in a dramatic increase in magma viscosity and volatile pressurisation, which was manifested a change of eruptive dynamics from early effusion to the Pozzolane Rosse's highly explosive eruption climax.en
dc.language.isoEnglishen
dc.publisher.nameSpringeren
dc.relation.ispartofBulletin of Volcanologyen
dc.relation.ispartofseries/73 (2011)en
dc.subjectMafi c explosive erupt ionsen
dc.subjectPy roclasti c flowen
dc.subjectEr uption magni tudeen
dc.subjectColli Al banien
dc.subjectPo tassic volcan ismen
dc.subjectCar bonate assi milationen
dc.titleCO2-driven large mafic explosive eruptions: a case study from the Colli Albani Volcanic District (Italy)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber241-256en
dc.subject.INGV05. General::05.02. Data dissemination::05.02.03. Volcanic eruptionsen
dc.identifier.doi10.1007/s00445-010-0406-3en
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dc.description.obiettivoSpecifico2.3. TTC - Laboratori di chimica e fisica delle rocceen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.contributor.authorFreda, C.en
dc.contributor.authorGaeta, M.en
dc.contributor.authorGiaccio, B.en
dc.contributor.authorMarra, F.en
dc.contributor.authorPalladino, D.en
dc.contributor.authorScarlato, P.en
dc.contributor.authorSottili, G.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentSapienza Università di Romaen
dc.contributor.departmentIGAG-CNRen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentSapienza Università di Romaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentIGAG-CNRen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptUniversità La Sapienza-
crisitem.author.deptCNR - IGAG-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptLa Sapienza Università Roma-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.orcid0000-0002-2320-8096-
crisitem.author.orcid0000-0002-4881-9563-
crisitem.author.orcid0000-0003-1933-0192-
crisitem.author.orcid0000-0001-7977-8330-
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.parent05. General-
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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