The authors would like to express their gratitude to the ODP technical staff and Transocean Sedco Forex crew for their hard work and valuable assistance during Leg 193. The authors would like to thank Dr. Margaret K. Tivey for her thoughtful and valuable comments, which improved the clarity of this report. This research used samples 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 a grant from the United States Science Support Program, Award number F001344. Quantitative analysis of CT data was also supported by NSF grant EAR-0113480.