Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).

The volcanic complex of Mts. Cimini (~0.90-1.30Ma) represents the geographical and chronological transition between the Tuscan Magmatic Province (TMP) and the Roman Magmatic Province (RMP), in central Italy. Major and trace elements, and Sr, Nd and Pb isotopes of whole-rock, as well as mineral chemi...

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Detalles Bibliográficos
Autores: Aulinas, M., Gasperini, Daniela, Gimeno, D., Macera, P., Fernandez-Turiel, J. L., Cimarelli, C.
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/81527
Acceso en línea:http://hdl.handle.net/10261/81527
Access Level:acceso abierto
Palabra clave:olivinlatite
Geochemistry.
ultrapotassic magmatism
Mantle heterogeneity
Mantle source
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spelling Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).Aulinas, M.Gasperini, DanielaGimeno, D.Macera, P.Fernandez-Turiel, J. L.Cimarelli, C.olivinlatiteGeochemistry.ultrapotassic magmatismMantle heterogeneityMantle sourceThe volcanic complex of Mts. Cimini (~0.90-1.30Ma) represents the geographical and chronological transition between the Tuscan Magmatic Province (TMP) and the Roman Magmatic Province (RMP), in central Italy. Major and trace elements, and Sr, Nd and Pb isotopes of whole-rock, as well as mineral chemistry analyses, were carried out on samples representative of the different petrographic and chronological units of Mts. Cimini. In particular, we focused on the olivine-bearing latites of Mts. Cimini that are the most mafic magmas, belong to the last phase of this volcanic activity, and are heterogeneous in highly incompatible element ratios and Sr-isotope compositions. We suggest that such heterogeneity reflects the occurrence of a heterogeneous upper mantle beneath central Italy, in which different portions, e.g., the sources of both the TMP and RMP, are characterized by distinct geochemical and petrographic features. In this scenario, about 900ka ago, the olivine-bearing latites mark the progressive decline of the TMP magma production in favour of partial melting of the RMP mantle region, thus recording the coexistence of both ultrapotassic alkaline and calc-alkaline magmas in the same volcanic region.This work has been carried out in the framework of the Research Consolidated Group SGR-2009-972 PEGEFA (Applied and Basic Petrology and Geochemistry) recognized by AGAUR, Generalitat de Catalunya, and partially funded by the CGL2007-63727 project of the Spanish Government. Isotopic analyses benefited from analytical facility (2002) at Southampton Oceanographic Center (SOCFAC-UK) through an European Commision/Research Infrastructure and additional funds from ACES00073 project, DURSI, Generalitat de Catalunya (2002). Preliminary field work was sustained by ACES98-57/6, DURSI, Generalitat de Catalunya (1999-2000) and institutional funds of University of Barcelona (1999). F. Costa is thanked for editorial handling and, together with G. Bianchini and an anonymous journal reviewer, for careful and insightful comments that significantly improved the manuscript. Donatella de Rita, Ciro Giampaolo, Sergio Lo Mastro and Guido Giordano of the University of Roma 3 (Italy) for introducing MA to the Mts. Cimini volcanic geology, as well as for their advice and help on sample collection; MA benefited of an ERASMUS grant in a very early phase of he work (1999); Rex Taylor and Andy Milton of SOCFAC-UK and the staff of the Serveis Científico-Tècnics of the Universitat de Barcelona for their support for sample analysis are acknowledged.Peer ReviewedUniversidad de Barcelona20112013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/81527reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1344/105.000001642info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/815272026-05-22T06:33:51Z
dc.title.none.fl_str_mv Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
title Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
spellingShingle Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
Aulinas, M.
olivinlatite
Geochemistry.
ultrapotassic magmatism
Mantle heterogeneity
Mantle source
title_short Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
title_full Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
title_fullStr Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
title_full_unstemmed Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
title_sort Coexistence of calcalkaline and ultrapotassic alkaline magmas at Mounts Cimini: evidence for transition from the Tuscan to the Roman Magmatic Provinces (central Italy).
dc.creator.none.fl_str_mv Aulinas, M.
Gasperini, Daniela
Gimeno, D.
Macera, P.
Fernandez-Turiel, J. L.
Cimarelli, C.
author Aulinas, M.
author_facet Aulinas, M.
Gasperini, Daniela
Gimeno, D.
Macera, P.
Fernandez-Turiel, J. L.
Cimarelli, C.
author_role author
author2 Gasperini, Daniela
Gimeno, D.
Macera, P.
Fernandez-Turiel, J. L.
Cimarelli, C.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv olivinlatite
Geochemistry.
ultrapotassic magmatism
Mantle heterogeneity
Mantle source
topic olivinlatite
Geochemistry.
ultrapotassic magmatism
Mantle heterogeneity
Mantle source
description The volcanic complex of Mts. Cimini (~0.90-1.30Ma) represents the geographical and chronological transition between the Tuscan Magmatic Province (TMP) and the Roman Magmatic Province (RMP), in central Italy. Major and trace elements, and Sr, Nd and Pb isotopes of whole-rock, as well as mineral chemistry analyses, were carried out on samples representative of the different petrographic and chronological units of Mts. Cimini. In particular, we focused on the olivine-bearing latites of Mts. Cimini that are the most mafic magmas, belong to the last phase of this volcanic activity, and are heterogeneous in highly incompatible element ratios and Sr-isotope compositions. We suggest that such heterogeneity reflects the occurrence of a heterogeneous upper mantle beneath central Italy, in which different portions, e.g., the sources of both the TMP and RMP, are characterized by distinct geochemical and petrographic features. In this scenario, about 900ka ago, the olivine-bearing latites mark the progressive decline of the TMP magma production in favour of partial melting of the RMP mantle region, thus recording the coexistence of both ultrapotassic alkaline and calc-alkaline magmas in the same volcanic region.
publishDate 2011
dc.date.none.fl_str_mv 2011
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/81527
url http://hdl.handle.net/10261/81527
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1344/105.000001642
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidad de Barcelona
publisher.none.fl_str_mv Universidad de Barcelona
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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