Transition of Mount Etna lavas from a mantle-plume to an island-arc magmatic source.

Investigates the transition of Mount Etna lavas from a mantle-plume to an island-arc magmatic source in Italy. Characterization of the trace-element composition of a series of lava emissions; Reflection of the compositional change in primary magmas; Implication on the calc-alkalinity of volcanism of the mount.