http://www.cnr.it/ontology/cnr/individuo/prodotto/ID178995
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)
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- http://www.springerlink.com/content/p16m3p14811l6p45/ (literal)
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- Rivista
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- ISI Web of Science (WOS) (literal)
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- 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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