*Beth Anne Christensen¹, David DeVleeschouwer², Jeroen Groeneveld², Benjamin Petrick³, Lars Reuning⁵, Gerald Auer⁴, Expedition 356 Shipboard Scientific Party (1.Environmental Studies Program, Adelphi University, 1 South Avenue, Garden City NY, 11530, USA, 2.MARUM–Center for Marine and Environmental Sciences and Department of Geosciences, University of Bremen, 28359 Bremen, Germany, 3.Max-Planck-Institut für Chemie, Mainz, 4.Institute of Earth Sciences, University of Graz, Heinrichstrasse 26, Graz 8010, Austria, 5.EMR – Energy and Mineral Resources Group, Geological Institute, RWTH, Aachen University, Wuellnerstrasse, Aachen 52056, Germany)