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Trends in Geochemistry   Volumes    Volume 1 
Abstract
Geochemical and Sr-Nd-Pb-O isotopic characteristics of the Campanian volcanic rocks. A metallogenic approach
A. Paone, B. De Vivo
Pages: 77 - 83
Number of pages: 7
Trends in Geochemistry
Volume 1 

Copyright © 2000 Research Trends. All rights reserved

ABSTRACT

Mt. Somma-Vesuvius is characterized by three internally gradational chemical groups in function of the age: (1) 25,000 to 14,000 yr BP; (2) 8000 to 2700 yr BP; (3) A.D 79 to A.D. 1944. Somma-Vesuvius alkaline magmatic system possesses a series of characters matching the features of alkaline magmatic systems associated with ore deposits. Trace element and isotopic data (Sr-Nd-Pb-O) from the volcanic products of the Campanian Plain (Mt. Somma-Vesuvius volcano, Campi Flegrei, Roccamonfina volcano, Ventotene and Ponza island) suggest a metasomatized continental mantle lithosphere as the principal magmas source. An enriched mantle melted and reactivated in an area of continental extension with input from mantle sources that resemble those that produce ocean island basalts.

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