1. Tectonics Group, Department of Earth Sciences, Faculty of Geosciences; Utrecht University; Utrecht Netherlands
2. Now at Laboratory of Experimental Tectonics, Department of Sciences; Università degli Studi Roma Tre; Rome Italy
3. International Geothermal Centre; Bochum University of Applied Sciences; Bochum Germany
4. Geophysical Fluid Dynamics Group; Institute of Geophysics, ETH; Zurich Switzerland