I thank Anne Pimmel (Ocean Drilling Program [ODP]) for collecting the pore water samples, Rob Cirroco (JCU-AAC) for helping to prepare and analyze samples and Mitch Malone for comments. This research used samples and/or data provided by the 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 JCU merit research grant.