This research used samples and/or data provided by the Ocean Drilling Program (ODP). ODP is funded by the U.S. National Science Foundation (NSF) and participating countries under management of Joint Oceanographic Institutions (JOI), Inc. These analyses were funded by a grant from the U.S. Science Support Program. Samples were collected during ODP Leg 206. Thanks to the captain and crew of the JOIDES Resolution for their expertise, which made sample collection possible.