We thank Captain Tom Ribbens and the crew, technicians, and fellow scientists aboard JOIDES Resolution for their dedicated assistance during Leg 190. This research used samples provided by the Ocean Drilling Program (ODP). ODP is sponsored by the U.S. National Science Foundation and participating countries under management of Joint Oceanographic Institutions, Inc. Funding was provided by the U.S. Science Support Program (grant F001281 to M.B. Underwood) and a Schlanger Ocean Drilling Fellowship to J.A. Steurer. Arpit Ghoting, Anup Bidesi, Nandini Basu, Swati Udas, Marcie Workman, and Eric Grabowski assisted in the laboratory. Martine Buatier and Juichiro Ashi provided helpful reviews of the manuscript. We also thank Greg Moore, Wonn Soh, and Chris Fergusson for insightful discussions regarding regional sediment dispersal.