Isotope geochemistry (Sr-Nd-Pb) and petrogenesis of leucite-bearing volcanic rocks from \"Colli Albani\" volcano, Roman Magmatic Province, Central Italy: inferences on volcano evolution and magma genesis (Articolo in rivista)

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  • Isotope geochemistry (Sr-Nd-Pb) and petrogenesis of leucite-bearing volcanic rocks from \"Colli Albani\" volcano, Roman Magmatic Province, Central Italy: inferences on volcano evolution and magma genesis (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s00445-009-0278-6 (literal)
Alternative label
  • Boari E.; Avanzinelli R.; Melluso L.; Giordano G.; Mattei M.; De Benedetti A.A.; Morra V.; Conticelli S. (2009)
    Isotope geochemistry (Sr-Nd-Pb) and petrogenesis of leucite-bearing volcanic rocks from "Colli Albani" volcano, Roman Magmatic Province, Central Italy: inferences on volcano evolution and magma genesis
    in Bulletin of volcanology (Print); Springer Berlin / Heildelberg, Berlin (Germania)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Boari E.; Avanzinelli R.; Melluso L.; Giordano G.; Mattei M.; De Benedetti A.A.; Morra V.; Conticelli S. (literal)
Pagina inizio
  • 977 (literal)
Pagina fine
  • 1005 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.springerlink.com/content/p16m3p14811l6p45/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 71 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Boari: Dipartimento di Scienze della Terra, Università degli Studi di Firenze Avanzinelli: Dipartimento di Scienze della Terra, Università degli Studi di Firenze Melluso: Dipartimento di Scienze della Terra, Università degli Studi di Napoli \"Federico II\" Giordano: Dipartimento di Scienze Geologiche, Università degli Studi di Roma III Mattei: Dipartimento di Scienze Geologiche, Università degli Studi di Roma III De Benedetti A.A.: Dipartimento di Scienze Geologiche, Università degli Studi di Roma III Morra: Dipartimento di Scienze della Terra, Università degli Studi di Napoli \"Federico II\" Conticelli: Dipartimento di Scienze della Terra, Università degli Studi di Firenze & CNR, IGG, Sezione di Firenze (literal)
Titolo
  • Isotope geochemistry (Sr-Nd-Pb) and petrogenesis of leucite-bearing volcanic rocks from \"Colli Albani\" volcano, Roman Magmatic Province, Central Italy: inferences on volcano evolution and magma genesis (literal)
Abstract
  • The \"Colli Albani\" composite volcano is made up of strongly silica-undersaturated leucite-bearing rocks. Magmas were erupted during three main periods, but a complex plumbing system dominated by regional tectonics channelled magmas into different reservoirs. The most alkali-rich magmas, restricted to the caldera-forming period (pre-caldera), are extremely enriched in incompatible trace elements and display more radiogenic Sr (87Sr/86Sr= 0.71057-0.71067), with slightly less radiogenic Pb with respect to those of the post-caldera period. Post-caldera volcanic activity was concentrated in three different volcanic environments: external to the caldera, along the caldera edge and within the caldera. The post-caldera magmas produced melilite- to leucitite-bearing, plagioclase-free leucitites. In contrast to the pre-caldera lavas, they are characterised by lower incompatible trace element abundances and less radiogenic Sr (87Sr/86Sr=0.71006-0.71039). Magmas evolved through crystal fractionation plus minor crustal assimilation in a large magma chamber during the precaldera period. The multiple caldera collapses dissected and partially obliterated the early magma chamber. During the post-caldera stage, magmas were channelled through several pathways and multiple shallow-level magma reservoirs were established. A lithospheric mantle wedge previously depleted in the basaltic component and subsequently enriched by metasomatic slab-derived component is suggested as the mantle source of Colli Albani parental magmas. Two different parental magmas are recognised for the pre- and post-caldera stages. The differences may be related to the interplay between smaller degrees of melting for the pre-caldera magmas and more carbonate-rich recycled subducted lithologies in the post-caldera magmas. (literal)
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