GRAIN BOUNDARIES IN FORSTERITE: HOW DO THEY MOVE TO PRODUCE SHEAR?

Caroline Bollinger1, Katharina Marquardt1, Robert J Farla2 and Patrick Knödler3, (1)Bayerisches Geoinstitut, Universitaet Bayreuth, Bayreuth, Germany, (2)Deutsche Elektronen-Synchrotron (DESY), Hamburg, Germany, (3)Chair of Experimental Physics III, Universitaet Bayreuth, Bayreuth, Germany