We thank the captain, the crew, technicians, and fellow scientists aboard the JOIDES Resolution for their assistance during Leg 204. This research used samples and/or data 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. The Spanish Ministry of Science and Education (Ministerio de Educación y Ciencia) funded participation of E. Gràcia in ODP Leg 204 through grant REN2001-5262-E and analyses and sample processing through grant BTE2002-11698-E. E. Piñero benefits from Ministerio de Educación y Ciencia Ph.D. fellowship AP2003-2872, and J.C. Larrasoaña benefits from Ministerio de Educación y Ciencia "Ramon y Cajal" postdoctoral contract. We thank N. Maestro and B. Paracuellos (Institut de Ciències del Mar-Consejo Superior de Investigaciones Científicas), E. Abarca (Department of Mineralogy and Petrology-Universidad de Granada), and J. Montes (Instituto Andaluz de Ciencias de la Tierra-Consejo Superior de Investigaciones Científicas) for assistance with sedimentological and mineralogical analyses. We wish to thank reviewer Renata G. Lucchi and staff scientist Marta Torres whose constructive comments enabled us to improve our original manuscript.