Maria Leonhardt¹, Grzegorz Kwiatek^1,2, Tero Saarno³, Patricia Martínez-Garzón¹, Marco Bohnhoff^1,2 and Georg H Dresen^1,4, (1)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (2)Free University Berlin, Institute of Geological Sciences, Berlin, Germany, (3)ST1 Deep Heat Oy, Helsinki, Finland, (4)University of Potsdam, Institute of Geosciences, Potsdam, Germany