Trace element cycle of subduction-related serpentinites
This project is aimed to better understand the geochemical cycle of fluid mobile trace elements and their isotopes within the range of subduction zones. Fluids from subducted serpentinites play a major role in the mass transfer between subducted hydrated oceanic crust and the overlying mantle wedge and are therefore responsible for the enrichment of the mobile elements (As, Sb, Cl, B, Li) in arc magmas compared to MORB. We investigate the role of serpentine phases on the geochemical cycle of trace elements by experimental studies, which are combined with petrological and analytical studies of serpentines from various natural environments.
Contact: Bernd Wunder
S. Guillot, Grenoble, France
F. Deschamps, Montpellier, France