Magmatic Differentiation vs Contamination in Arc Plutons: A new in situ perspective based on Sr isotopes in plagioclase from Adamello (Italy)

Manuel Pimenta Silva1, Andrea Giuliani1, Urs Schaltegger2, Blair Schoene3, Peter Ulmer1 and Othmar Müntener4, (1)ETH Zürich, Institute of Geochemistry and Petrology, Zurich, Switzerland, (2)University of Geneva, Geneva, Switzerland, (3)Princeton University, Department of Geosciences, Princeton, United States, (4)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland