Experimental constraints on the fO2 dependence of the olivine-clinopyroxene cotectic crystallisation in hydrous arc magmas

Manuel Pimenta Silva1, Felix Marxer2, Stepan Krasheninnikov2, Francois Holtz2, Peter Ulmer1 and Othmar Müntener3, (1)ETH Zürich, Institute of Geochemistry and Petrology, Zurich, Switzerland, (2)Leibniz University of Hannover, Institute of Mineralogy, Hannover, Germany, (3)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland