We wish to thank the following reviewers as well as persons and repositories who provided samples used in this study: two anonymous reviewers, the Core Laboratory at Oregon State University, Corvallis, Linda Anderson at the University of California, Santa Cruz, and the West Coast Repository of the Ocean Drilling Program (ODP), La Jolla, California.
This research used samples and/or data provided by 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 partially provided by NSF grants OCE99-07292 and EPS-0132626.