Walter Hale and his staff at the core repository in Bremen, Germany, provided efficient and able assistance with sampling. Attiya Mobin-Uddin, Jessica Albrecht, Maura Metheny, and Chris Brown assisted with sample processing. Sam Boggs, Jr., provided a helpful review of the manuscript. This work was funded by a JOI-USSSP postcruise grant (Leg 163); this support is gratefully acknowledged.