Il ruolo dei processi a bassa pressione nella petrogenesi del magmatismo pleistocenico della Provincia Magmatica Romana; dati isotopici preliminari sul vulcano di Vico  [Low pressure processes in the petrogenesis of Pleistocene magmatism of the Roman magmatic province; preliminary isotope data on the Vico Volcano; Latium, Italy]

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Alternate Title:Low pressure processes in the petrogenesis of Pleistocene magmatism of the Roman magmatic province; preliminary isotope data on the Vico Volcano; Latium, Italy
Authors:Gasperini, Daniela
Author Affiliations:Primary:
Universita di Pisa, Dipartimento di Scienze della Terra, Pisa, Italy
Volume Title:Atti della Accademia Nazionale dei Lincei. Rendiconti Lincei. Scienze Fisiche e Naturali
Source:Atti della Accademia Nazionale dei Lincei. Rendiconti Lincei. Scienze Fisiche e Naturali, 9(14 Part 3), p.161-177. Publisher: Accademia Nazionale dei Lincei, Rome, Italy. ISSN: 1120-6349
Publication Date:2003
Note:In Italian with English summary. 32 refs.; illus., incl. 1 table, geol. sketch map
Summary:Role of low pressure processes in the petrogenesis of Pleistocene magmatism of the Roman Magmatic Province: preliminary isotope data on the Vico volcano. The Vico volcanic series, similarly to the most basic rocks of the Roman and Tuscan Magmatic Provinces, show isotopic compositions that are typical of crust-derived material. This isotopic signature was likely acquired from an anomalous mantle source, strongly modified by the interaction with fluids and melts released by a subducted slab(s). By contrast, fractionation and assimilation processes at low pressure in the local continental crust appear to have played a secondary role even in the petrogenesis of the most evolved Vico volcanics. The achievement of a steady state and subsequent disequilibria of the Vico volcanic system could be related to the geodynamic history of the internal sector of the Apennines at Pleistocene time. [R.A.H.]
Sections:Geochemistry; Petrology
Subsections:Igneous rocks; Volcanology
Subjects:Alkaline earth metals; Cenozoic; Chemical composition; Chemical ratios; Continental crust; Crust; Crystal fractionation; Fluid phase; Geochemistry; Igneous rocks; Ignimbrite; Isotope ratios; Isotopes; Lead; Low pressure; Magmas; Magmatism; Melts; Metals; Mineral composition; Nd-144/Nd-143; Neodymium; Pb-206/Pb-204; Petrography; Plate tectonics; Pleistocene; Potassic composition; Pressure; Pyroclastics; Quaternary; Radioactive isotopes; Rare earths; Slabs; Sr-87/Sr-86; Stable isotopes; Stratigraphic units; Strontium; Subduction; Tectonics; Trace elements; Volcanic rocks; Volcanoes; Apennines; Europe; Italy; Latium Italy; Southern Europe; Caprarola Italy; Roman magmatic province; Vico
Coordinates:N421500 N423000 E0122500 E0120500
Abstract Numbers:04M/2671
Record ID:2005044468
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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