Iris van Zelst, ETH Swiss Federal Institute of Technology Zurich, Department of Earth Sciences, Zurich, Switzerland, Silvia Brizzi, Università Roma Tre, Dip. Scienze, Roma, Italy; University of Parma, Natural and EXperimental Tectonics research group, Parma, Italy, Elenora van Rijsingen, Ecole Normale Supérieure, Department of Geosciences, Paris, France, Francesca Funiciello, Università Roma Tre, Dip. Scienze, Rome, Italy and Ylona van Dinther, Utrecht University, Earth Sciences, Utrecht, Netherlands