The assistance of the captain, crew, and technical staff of Leg 162 in obtaining samples is gratefully acknowledged. Special thanks go to Helge Meggers and Sylke Draschba for their helpful comments on an earlier version of the manuscript. J. Backman, T. Herbert, R. Stein, and J.-A. Flores provided insightful reviews that significantly improved the quality of the manuscript. Thanks also to Matthias von Herz, Stefan Hüneke, Jörg Brüning, and Renate Henning for technical assistance in preparation of the data sets. This study was financially supported by grants from the Deutsche Forschungsgemeinschaft (He 1671/4).