This research used samples provided by the Ocean Drilling Program (ODP). ODP is sponsored by the U.S. National Science Foundation (NSF) and participating countries under management of Joint Oceanographic Institutions (JOI), Inc. R.A. Binns acknowledges funding provided by CSIRO and the P2+ consortium of Australian mineral companies and assistance from colleagues at CSIRO and staff at the Electron Microscopy Unit and the Department of Earth and Marine Sciences at the Australian National University. F.J.A.S. Barriga acknowledges Fundação para a Ciência e Tecnologia and GRICES for support through travel grants and projects Seahma (POCTI/MAR/15281/1999) and Archimedes (FCT/SAPIENS 2001/41393) and various forms of support and help from colleagues and staff at the University of Lisbon. D.J. Miller was funded by the JOI/U.S. Science Advisory Committee and ODP/IODP. Collectively, we acknowledge the hard work and stimulating discussions of the Shipboard Scientific Party, both during and after Leg 193. Randolph Koski and Jose Honnorez are thanked for their comprehensive reviews, which greatly improved this chapter.