1. Department of Earth Science/K.G. Jebsen Centre for Deep Sea Research; University of Bergen; Bergen Norway
2. Woods Hole Oceanographic Institution; Woods Hole MA USA
3. Laboratoire de Géologie; Ecole normale supérieure/CNRS UMR 8538, PSL Research University; Paris France
4. Lamont-Doherty Earth Observatory; Columbia University; Palisades NY USA