Contrasting sediment melt and fluid signatures for magma components in the Aeolian Arc: Implications for numerical modeling of subduction systems

摘要: The complex geodynamic evolution of Aeolian Arc in the southern Tyrrhenian Sea resulted melts with some most pronounced along arc geochemical variation incompatible trace elements and radiogenic isotopes worldwide, likely reflecting variations magma source components. Here we elucidate effects subducted components on sources different sections by evaluating systematics depleted upper mantle but enriched subducting slab, focusing a new set B, Be, As, Li measurements. Based our results, suggest that both hydrous fluids silicate were involved element transport from slab to wedge. Hydrous strongly influence chemical composition lavas central (Salina) while melt component sediments probably plays key role metasomatic reactions wedge below peripheral islands (Stromboli). We also noted similarities between Archipelago, Phlegrean Fields, other volcanic arcs/arc segments around world (e.g., Sunda, Cascades, Mexican Volcanic Belt). presence all these locations an increase temperature inflow hot asthenospheric material tears/windows or edges sinking slab.