Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/11797
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dc.date.accessioned2018-05-02T07:23:25Z-
dc.date.available2018-05-02T07:23:25Z-
dc.date.issued2017-02-
dc.identifier.urihttp://hdl.handle.net/2122/11797-
dc.description.abstractBarium diffusion chronometry applied to sanidine phenocrysts from the trachytic Agnano-Monte Spina eruption (∼4.7 ka) constrains the time between reactivation and eruption of magma batches in the Campi Flegrei caldera. Backscattered electron imaging and quantitative electron microprobe measurements on 50 sanidine phenocrysts from representative pumice samples document core-to-rim compositional zoning. We focus on compositional breaks near the crystal rims that record magma mixing processes just prior to eruption. Diffusion times were modeled at a magmatic temperature of 930 °C using profiles based on quantitative BaO point analyses, X-ray scans, and grayscale swath profiles, yielding times ≤60 years between mixing and eruption. Such short timescales are consistent with volcanological and geochronological data that indicate that at least six eruptions occurred in the Agnano-San Vito area during few centuries before the Agnano-Monte Spina eruption. Thus, the short diffusion timescales are similar to time intervals between eruptions. Therefore, the rejuvenation time of magma residing in a shallow reservoir after influx of a new magma batch that triggered the eruption, and thus pre-eruption warning times, may be as short as years to a few decades at Campi Flegrei caldera.en_US
dc.language.isoengen_US
dc.relation.ispartofBulletin of Volcanologyen_US
dc.relation.ispartofseries/79 (2017)en_US
dc.titleTimescales of magmatic processes prior to the ∼4.7 ka Agnano-Monte Spina eruption (Campi Flegrei caldera, Southern Italy) based on diffusion chronometry from sanidine phenocrystsen_US
dc.typearticle-
dc.description.statusPublisheden_US
dc.description.pagenumber18en_US
dc.identifier.doi10.1007/s00445-017-1101-4en_US
dc.description.obiettivoSpecifico1V. Storia eruttivaen_US
dc.description.journalTypeJCR Journalen_US
dc.contributor.authorIovine, Raffaella Silvia-
dc.contributor.authorFedele, Lorenzo-
dc.contributor.authorMazzeo, Fabio Carmine-
dc.contributor.authorArienzo, Ilenia-
dc.contributor.authorCavallo, Andrea-
dc.contributor.authorWörner, Gerhard-
dc.contributor.authorOrsi, Giovanni-
dc.contributor.authorCivetta, Lucia-
dc.contributor.authorD’Antonio, Massimo-
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italiaen_US
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italiaen_US
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italiaen_US
item.grantfulltextrestricted-
item.fulltextWith Fulltext-
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.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.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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