Evolution of Eolian arc volcanism (Southern Tyrrhenian Sea) |
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| Authors: | Franco Barberi Fabrizio Innocenti Giorgio Ferrara Jörg Keller Letterio Villari |
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| Institution: | 1. Istituto di Mineralogia e Petrografia, University of PisaItaly;2. C.N.R., Centro di Minerogenesi, Petrogenesi e Tettogenesi dell''Appennino Settentrionale, Pisa Italy |
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| Abstract: | The Eolian arc is located at the boundary between the converging African and European plates. Its volcanism is characterized by a marked evolution in a restricted time (less than 1 my). A progressive transition is observed from typical calc-alkaline series toward shoshonitic rocks produced by past and present activity (Vulcano and Stromboli). By comparison with circum-Pacific island arcs, the evolution of Eolian volcanism can be related to a rapid deepening of the Benioff zone. The occurrence of shoshonitic rocks and the continental nature of the crust on both sides of the plate boundary suggest that the Eolian arc is in a senile stage of evolution. Petrology and Sr isotopic data indicate a probable mantle source for Eolian volcanism. |
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