Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9372
DC Field | Value | Language |
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dc.contributor.authorall | Corsaro, R. A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Rotolo, S. G.; DISTeM, Università di Palermo | en |
dc.contributor.authorall | Cocina, O.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia | en |
dc.contributor.authorall | Tumbarello, G.; ENI SpA, Milano | en |
dc.date.accessioned | 2015-02-25T12:09:54Z | en |
dc.date.available | 2015-02-25T12:09:54Z | en |
dc.date.issued | 2014 | en |
dc.identifier.uri | http://hdl.handle.net/2122/9372 | en |
dc.description.abstract | Various 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.iso | English | en |
dc.publisher.name | Springer Berlin Heidelberg | en |
dc.relation.ispartof | Bulletin of volcanology | en |
dc.relation.ispartofseries | /76 (2014) | en |
dc.subject | Cognate xenoliths . Gabbro . Geobarometry . Rock density . P-wave velocity . Mt. Etna | en |
dc.title | Cognate xenoliths in Mt. Etna lavas: witnesses of the high-velocity body beneath the volcano | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 722 | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous | en |
dc.identifier.doi | 10.1007/s00445-013-0772-8 | en |
dc.description.obiettivoSpecifico | 1V. Storia e struttura dei sistemi vulcanici | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.issn | 0258-8900 | en |
dc.relation.eissn | 1432-0819 | en |
dc.contributor.author | Corsaro, R. A. | en |
dc.contributor.author | Rotolo, Silvio Giuseppe | en |
dc.contributor.author | Cocina, O. | en |
dc.contributor.author | Tumbarello, G. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | DISTeM, Università di Palermo | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | en |
dc.contributor.department | ENI SpA, Milano | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | Università degli Studi di Palermo | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia | - |
crisitem.author.dept | ENI SpA, Milano | - |
crisitem.author.orcid | 0000-0001-6137-8806 | - |
crisitem.author.orcid | 0000-0001-7523-1338 | - |
crisitem.author.orcid | 0000-0003-1856-830X | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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corsaro et al.pdf | main article | 1.16 MB | Adobe PDF |
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