Christopher Schmidt¹, Christian Hensen¹, Klaus J G Wallmann¹, Volker Liebetrau¹, Michael Tatzel^2,3, Simon L. Schurr⁴, Steffen Kutterolf¹, Laura Haffert¹, Christian Huebscher⁵, Elodie Lebas⁶, Alexander Heuser¹, Mark Schmidt¹, Harald Strauss⁴, Jochen Vogl³ and Thor H Hansteen¹, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)University of California, Institute of Marine Sciences, Santa Cruz, United States, (3)Bundesanstalt für Materialforschung und – prüfung, Berlin, Germany, (4)Universitaet Muenster, Geologisch-Palaeontologisches Institut, Muenster, Germany, (5)University of Hamburg, Institute of Geophysics, Hamburg, Germany, (6)University of Kiel, Institute of Geosciences, Kiel, Germany