The author gratefully acknowledges Walter Hale and Alex Wuelbers at the Bremen Core Repository for their assistance with sampling, and Jessica Albrecht, Chris Brown, Rich Jacko, Maura Metheny, and Attiya Mobin-Uddin for their assistance with sample processing. Helpful and constructive reviews were provided by John Andrews and Gerard Bond. This work was funded by a JOI-USSSP postcruise research grant.