Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7616
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dc.contributor.authorallFerrero, S.; Dipartimento di Geoscienze Università di Padova, Italyen
dc.contributor.authorallBartoli, O.; Dipartimento di Scienze della Terra Università di Parma, Italyen
dc.contributor.authorallBernardo, C.; Dipartimento di Geoscienze Università di Padova, Italyen
dc.contributor.authorallSalvioli-Mariani, E.; Dipartimento di Scienze della Terra Università di Parma, Italyen
dc.contributor.authorallAcosta-Vigil, A.; Instituto Andaluz de Ciencias de la Tierra, Consejo Superior de L'investigaciones Cientificas. Armilla, Spainen
dc.contributor.authorallCavallo, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallGroppo, C.; Dipartimento di Scienze Mineralogiche en Petrologiche, Università di Torino, Italyen
dc.contributor.authorallBattiston, S.; Istituto per l'Energetica e le Interfasi (IENI), Padova, Italyen
dc.date.accessioned2012-01-27T09:32:53Zen
dc.date.available2012-01-27T09:32:53Zen
dc.date.issued2012en
dc.identifier.urihttp://hdl.handle.net/2122/7616en
dc.description.abstractThe occurrence of crystallized and glassy melt inclusions (MI) in high-grade, partially melted metapelites and metagraywackes has opened up new possibilities to investigate anatectic processes. The present study focuses on three case studies: khondalites from the Kerala Khondalite Belt (India), the Ronda migmatites (Spain), and the Barun Gneiss (Nepal Himalaya). The results of a detailed microstructural investigation are reported, along with some new microchemical data on the bulk composition of MI. These inclusions were trapped within peritectic garnet and ilmenite during crystal growth and are therefore primary inclusions. They are generally isometric and very small in size, mostly £15 lm, and only rarely reaching 30 lm; they occur in clusters. In most cases inclusions are crystallized ( nanogranites ) and contain a granitic phase assemblage with quartz, feldspar and one or two mica depending on the particular case study, commonly with accessory phases (mainly zircon, apatite, rutile). In many cases the polycrystalline aggregates that make up the nanogranites show igneous microstructures, e.g. granophyric intergrowths, micrographic quartz in K-feldspar and cuneiform rods of quartz in plagioclase. Further evidence for the former presence of melt within the investigated inclusions consists of melt pseudomorphs, similar to those recognized at larger scale in the host migmatites. Moreover, partially crystallized inclusions are locally abundant and together with very small (£8 lm) glassy inclusions may occur in the same clusters. Both crystallized and partially crystallized inclusions often display a diffuse nanoporosity, which may contain fluids, depending on the case study. After entrapment, inclusions underwent limited microstructural modifications, such as shape maturation, local necking down processes, and decrepitation (mainly in the Barun Gneiss), which did not influence their bulk composition. Re-homogenized nanogranites and glassy inclusions show a leucogranitic and peraluminous composition, consistent with the results of partial melting experiments on metapelites and metagraywackes. Anatectic MI should therefore be considered as a new and important opportunity to understand the partial melting processes.en
dc.language.isoEnglishen
dc.publisher.nameWiley-Blackwellen
dc.relation.ispartofJournal of Metamorphic Geologyen
dc.relation.ispartofseries/30 (2012)en
dc.subjectgarneten
dc.subjectmelt inclusionsen
dc.subjectmelt microstructuresen
dc.subjectmigmatitesen
dc.subjectnanograniteen
dc.titleMicrostructures of melt inclusions in anatectic metasedimentaryen
dc.typearticleen
dc.description.statusPublisheden
dc.description.pagenumber303-322en
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.05. Mineralogy and petrologyen
dc.identifier.doi10.1111/j.1525-1314.2011.00968.xen
dc.description.obiettivoSpecifico3.5. Geologia e storia dei vulcani ed evoluzione dei magmien
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0263-4929en
dc.relation.eissn1525-1314en
dc.contributor.authorFerrero, S.en
dc.contributor.authorBartoli, O.en
dc.contributor.authorBernardo, C.en
dc.contributor.authorSalvioli-Mariani, E.en
dc.contributor.authorAcosta-Vigil, A.en
dc.contributor.authorCavallo, A.en
dc.contributor.authorGroppo, C.en
dc.contributor.authorBattiston, S.en
dc.contributor.departmentDipartimento di Geoscienze Università di Padova, Italyen
dc.contributor.departmentDipartimento di Scienze della Terra Università di Parma, Italyen
dc.contributor.departmentDipartimento di Geoscienze Università di Padova, Italyen
dc.contributor.departmentDipartimento di Scienze della Terra Università di Parma, Italyen
dc.contributor.departmentInstituto Andaluz de Ciencias de la Tierra, Consejo Superior de L'investigaciones Cientificas. Armilla, Spainen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentDipartimento di Scienze Mineralogiche en Petrologiche, Università di Torino, Italyen
dc.contributor.departmentIstituto per l'Energetica e le Interfasi (IENI), Padova, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptDipartimento di Geoscienze Università di Padova, Italy-
crisitem.author.deptDipartimento di Scienze della Terra Università di Parma, Italy-
crisitem.author.deptDipartimento di Geoscienze Università di Padova, Italy-
crisitem.author.deptDipartimento di Scienze della Terra, Università di Parma-
crisitem.author.deptInstituto Andaluz de Ciencias de la Tierra, Consejo Superior de L'investigaciones Cientificas. Armilla, Spain-
crisitem.author.deptDipartimento di Scienze Mineralogiche en Petrologiche, Università di Torino, Italy-
crisitem.author.deptIstituto per l'Energetica e le Interfasi (IENI), Padova, Italy-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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