The authors acknowledge Sang-Mook Lee, who provided the bathymetry data from Lee (2000), and Katerina Petronotis, who processed the data to generate Figure F2. We also want to acknowledge reviews from Graziella Caprarelli, Vadim Kamenetsky, and Ray Binns. This research used samples and/or data provided by the Ocean Drilling Program (ODP). ODP is sponsored by the U.S. National Science Foundation (NSF) and participating countries under management of Joint Oceanographic Institutions (JOI), Inc. Funding for this research was provided by grants from U.S. Science Advisory Committee to D.J.M. and D.A.V. and from the German Research Foundation (DFG) to H.P.