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Geochemical evolution of a back-arc basin: the Tyrrhenian Sea during the Pliocene

Abstract:

The basalts recovered in the Vavilov basin during ODP Leg 107 show compositional variations with time from E-MORB type tholeiites (site 655B) towards lavas displaying calc-alkaline characteristics showing a LILE/HFSE enrichment and a negative Nb anomaly (site 651A). This indicates the influence of LILE-rich fluids released from the subducted slab on the composition of mantle source under the back-arc spreading area. Thus the magmatic evolution of the Tyrrhenian sea records in influence of the Ionian subduction, and then its possible southeastwards retreat. There is an abridged English version. -English summary

Año de publicación:

1989

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Geoquímica

    Áreas temáticas:

    • Geología, hidrología, meteorología
    • Geología económica

    Contribuidores:

    Claude RobinClaude Robin
    Bertrand H.Bertrand H.
    Boivin P.Boivin P.