Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/11585
DC FieldValueLanguage
dc.date.accessioned2018-03-30T08:32:54Zen
dc.date.available2018-03-30T08:32:54Zen
dc.date.issued2016en
dc.identifier.urihttp://hdl.handle.net/2122/11585en
dc.description.abstractMagma reservoirs are thought to grow relatively slowly, assembling incrementally under volatile-saturated conditions. Eruptions may be triggered by injections of volatile-rich melt, or generation of over-pressure due to protracted crystallization. Here, we analyse fluorine, chlorine and water in apatite crystals trapped at di erent stages of magma evolution, and in melt inclusions from clinopyroxene and biotite crystals expelled during an explosive eruption of the Campi Flegrei caldera, Italy, about 4,000 years ago. We combine our geochemical analyses with thermodynamic modelling to reconstruct the evolution of magmatic volatile contents leading up to the explosive eruption. We find that the magma reservoir remained persistently water-undersaturated throughout most of its lifetime. Even crystals in contact with the melt shortly before eruption show that the magma was volatile-undersaturated. Our models suggest that the melt reached volatile saturation at low temperatures, just before eruption.We suggest that late-stage volatile saturation probably triggered the eruption, and conclude that ‘priming’ of the magma system for eruption may occur on timescales much shorter than the decadal to centennial timescales thought typical for magma reservoir assembly. Thus, surface deformation pulses that record magma assembly at depth beneath Campi Flegrei and other similar magmatic systems may not be immediately followed by an eruption; and explosive eruptions may begin with little warning.en
dc.language.isoEnglishen
dc.relation.ispartofNature Geoscienceen
dc.relation.ispartofseries/9 (2016)en
dc.subjectexplosive volcanic eruptionsen
dc.subjectmagma evolutionen
dc.subjectvolatile saturationen
dc.titleLate-stage volatile saturation as a potential trigger for explosive volcanic eruptionsen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber249-255en
dc.identifier.doi10.1038/ngeo2639en
dc.description.obiettivoSpecifico4V. Dinamica dei processi pre-eruttivien
dc.description.journalTypeJCR Journalen
dc.contributor.authorStock, Michael J.en
dc.contributor.authorHumphreys, Madeleine C. Sen
dc.contributor.authorSmith, Victoria C.en
dc.contributor.authorIsaia, Robertoen
dc.contributor.authorPyle, David M.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italiaen
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 OV, Napoli, Italia-
crisitem.author.orcid0000-0001-7277-2358-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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