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doi:10.2204/iodp.proc.307.206.2009

Acknowledgments

Samples and data were provided by the Integrated Ocean Drilling Program (IODP). Funds for isotopic analyses were provided by a grant to the author from JOI-USSAC, administered by U.S. Science Support Program administered by the Joint Oceanographic Institutes (now Ocean Leadership). David Dettman at the Environmental Isotope Laboratory, University of Arizona, oversaw isotopic analyses. I am grateful to the Expedition 307 shipboard participants for discussions and assistance with sample collection. Thanks also to P. Meister, whose review comments improved this manuscript.