Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9372
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dc.contributor.authorallCorsaro, R. A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallRotolo, S. G.; DISTeM, Università di Palermoen
dc.contributor.authorallCocina, O.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallTumbarello, G.; ENI SpA, Milanoen
dc.date.accessioned2015-02-25T12:09:54Zen
dc.date.available2015-02-25T12:09:54Zen
dc.date.issued2014en
dc.identifier.urihttp://hdl.handle.net/2122/9372en
dc.description.abstractVarious xenoliths have been found in lavas of the 1763 (“La Montagnola”), 2001, and 2002–03 eruptions atMt. Etna whose petrographic evidence and mineral chemistry exclude a mantle origin and clearly point to a cognate nature. Consequently, cognate xenoliths might represent a proxy to infer the nature of the high-velocity body (HVB) imaged beneath the volcano by seismic tomography. Petrography allows us to group the cognate xenoliths as follows: i) gabbros with amphibole and amphibole-bearing mela-gabbros, ii) olivine-bearing leuco-gabbros, iii) leuco-gabbros with amphibole, and iv) Plg-rich leuco gabbros. Geobarometry estimates the crystallization pressure of the cognate xenoliths between 1.9 and 4.1 kbar. The bulk density of the cognate xenoliths varies from2.6 to 3.0 g/cm3. P wave velocities (VP), calculated in relation to xenolith density, range from 4.9 to 6.1 km/s. The integration of mineralogical, compositional, geobarometric data, and density-dependent VP with recent literature data on 3D VP seismic tomography enabled us to formulate the first hypothesis about the nature of the HVB which, in the depth range of 3–13 km b.s.l., is likely made of intrusive gabbroic rocks. These are believed to have formed at the “solidification front”, a marginal zone that encompasses a deep region (>5 km b.s.l.) of Mt. Etna’s plumbing system, within which magma crystallization takes place. The intrusive rocks were afterwards fragmented and transported as cognate xenoliths by the volatile-rich and fast-ascending magmas of the 1763 “La Montagnola”, 2001 and 2002–03 eruptions.en
dc.language.isoEnglishen
dc.publisher.nameSpringer Berlin Heidelbergen
dc.relation.ispartofBulletin of volcanologyen
dc.relation.ispartofseries/76 (2014)en
dc.subjectCognate xenoliths . Gabbro . Geobarometry . Rock density . P-wave velocity . Mt. Etnaen
dc.titleCognate xenoliths in Mt. Etna lavas: witnesses of the high-velocity body beneath the volcanoen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber722en
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneousen
dc.identifier.doi10.1007/s00445-013-0772-8en
dc.description.obiettivoSpecifico1V. Storia e struttura dei sistemi vulcanicien
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0258-8900en
dc.relation.eissn1432-0819en
dc.contributor.authorCorsaro, R. A.en
dc.contributor.authorRotolo, Silvio Giuseppeen
dc.contributor.authorCocina, O.en
dc.contributor.authorTumbarello, G.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentDISTeM, Università di Palermoen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentENI SpA, Milanoen
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 OE, Catania, Italia-
crisitem.author.deptUniversità degli Studi di Palermo-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptENI SpA, Milano-
crisitem.author.orcid0000-0001-6137-8806-
crisitem.author.orcid0000-0001-7523-1338-
crisitem.author.orcid0000-0003-1856-830X-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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