We are grateful for the help and company of both captains and crew of the JOIDES Resolution, as well as the ODP marine technicians, shipboard scientists, and co-chief-scientists. This manuscript has benefited from the careful review and helpful comments of Susana Lebreiro, Doug Masson, and Bob Whitmarsh.
D. Milkert would like to thank the ODP for inviting her on Leg 149. Financial support was provided by NERC (Natural Environment Research Council), United Kingdom (Grant No. GST/02/725), and the EC MAST program (Grant No. MAS2-CT94-0083).