@prefix prodottidellaricerca: . @prefix istituto: . @prefix prodotto: . istituto:CDS043 prodottidellaricerca:prodotto prodotto:ID187750 . @prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . unitaDiPersonaleInterno:MATRICOLA15051 pubblicazioni:autoreCNRDi prodotto:ID187750 . @prefix modulo: . modulo:ID8075 prodottidellaricerca:prodotto prodotto:ID187750 . @prefix rdf: . prodotto:ID187750 rdf:type prodotto:TIPO1101 . @prefix retescientifica: . prodotto:ID187750 rdf:type retescientifica:ProdottoDellaRicerca . @prefix rdfs: . prodotto:ID187750 rdfs:label "Peridotite clinopyroxene chemistry reflects mantle processes rather than continental versus oceanic settings (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID187750 pubblicazioni:anno "1996-01-01T00:00:00+01:00"^^xsd:gYear ; pubblicazioni:doi "10.1016/0012-821X(96)00019-2"^^xsd:string . @prefix skos: . prodotto:ID187750 skos:altLabel "
Rivalenti G. 1; Vannucci R. 2; Rampone E. 3; Mazzucchelli M.1; Piccardo G.B. 3; Piccirillo E.M. 4; Bottazzi P. 2; Ottolini L. 2 (1996)
Peridotite clinopyroxene chemistry reflects mantle processes rather than continental versus oceanic settings
in Earth and planetary science letters
"^^rdf:HTML ; pubblicazioni:autori "Rivalenti G. 1; Vannucci R. 2; Rampone E. 3; Mazzucchelli M.1; Piccardo G.B. 3; Piccirillo E.M. 4; Bottazzi P. 2; Ottolini L. 2"^^xsd:string ; pubblicazioni:paginaInizio "423"^^xsd:string ; pubblicazioni:paginaFine "437"^^xsd:string ; pubblicazioni:numeroVolume "139"^^xsd:string . @prefix ns11: . prodotto:ID187750 pubblicazioni:rivista ns11:ID393777 ; pubblicazioni:numeroFascicolo "3-4"^^xsd:string ; skos:note "ISI Web of Science (WOS)"^^xsd:string ; pubblicazioni:affiliazioni "1. UNIV MODENA,DIPARTIMENTO SCI TERRA,PL S EUFEMIA 19,I-41100 MODENA,ITALY; \n2. CNR,CTR STUDIO CRISTALLOCHIM & CRISTALLOG,I-27100 PAVIA,ITALY \n3. UNIV GENOA,DIPARTIMENTO SCI TERRA,I-16132 GENOA,ITALY \n4. UNIV TRIESTE,IST MINERAL & PETROG,I-34100 TRIESTE,ITALY"^^xsd:string ; pubblicazioni:titolo "Peridotite clinopyroxene chemistry reflects mantle processes rather than continental versus oceanic settings"^^xsd:string ; prodottidellaricerca:abstract "Comparison of 360 trace element analyses of clinopyroxenes from peridotites indicates that clinopyroxene composition cannot discriminate between suboceanic and subcontinental mantle. Clinopyroxenes from abyssal and fore-arc peridotites have the lowest incompatible element concentrations and record melting and basalt extraction as the dominant process. Clinopyroxenes from continental peridotite massifs partially overlap the composition of clinopyroxenes from abyssal peridotites and, in general, behave as a less depleted component in the chemical variation trends defined by the latter. In the peridotite massifs, subsolidus re-equilibration involving phase transitions (spinel to plagioclase facies) may cause significant element variations in clinopyroxene (e.g. Sr and Eu/Eu* decrease, REE, Ti increase). Metasomatic processes cause only comparatively minor trace element variations.\n\nClinopyroxenes from mantle xenoliths in OIB and continental alkali basalts have the highest incompatible trace element concentrations and the largest compositional variations. They primarily record metasomatic enrichment processes, which are similar in suboceanic and subcontinental mantle. These processes induced the highest incompatible element enrichment in the clinopyroxenes from the most refractory peridotites, supporting the chromatographic nature of infiltration metasomatism. This enrichment, however, does not affect Ti, which is in the same concentration range in clinopyroxenes from both xenoliths and abyssal peridotites. The apparent Ti immobility may be due to several causes, such as reduced Ti solubility in hydrous fluids, fractionation of Ti-rich phases from percolating silicate melts, reaction with carbonatite melts formerly equilibrated with amphibole-peridotite. In general, clinopyroxene geochemistry does not allow a clear distinction between different metasomatic agents.\n\nThe similarity between the geochemical characteristics of xenoliths from continental and oceanic environments supports previous results that the compositions of the pre-metasomatic lithosphere and of the asthenosphere, from where metasomatic agents derive, do not differ in the two environments."@en ; prodottidellaricerca:prodottoDi modulo:ID8075 , istituto:CDS043 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA15051 . @prefix parolechiave: . prodotto:ID187750 parolechiave:insiemeDiParoleChiave . ns11:ID393777 pubblicazioni:rivistaDi prodotto:ID187750 . parolechiave:insiemeDiParoleChiaveDi prodotto:ID187750 .