Thanks to the scientific party of Leg 172 and the crew of the JOIDES Resolution for their camaraderie and unwavering commitment to the project. Laboratory space was lent by many kind individuals and institutions: Florida State University, The Antarctic Research Center, Dr. David Harwood, University of Leicester Department of Geology, and the Borehole Research Group at Lamont-Doherty Earth Observatory of Columbia University. Thanks also to Domenico Rio and Lorri Peters for their detailed and immensely helpful science and editorial reviews. This project has been funded by a grant from the Joint Oceanographic Institutions/U.S. Science Support Program.