The authors would like to thank Professor Klemm, Ms. Rüdiger, Mr. Gabriel, and Ms. Bombach for analyses at the geochemistry laboratory of the Institut für Mineralogie (Bergakademie Freiberg, Germany). The Sr-isotopic compositions and 18Oanhydrite were determined by Dr. Tichomirowa and Ms. Liebscher, and the XRD data were generated with the help of Dr. Kleeberg and Ms. Köhler. The H2O analyses were performed by Ms. Rau at GEOMAR (Kiel, Germany). Dr. Hoffbauer and Ms. Dohle assisted with XRF and 18Osilicate measurements at the Mineralogisch-Petrologisches Institut (Universität Bonn, Germany). Dr. Bach (Woods Hole Oceanographic Institution) developed the Excel spreadsheet for calculation of normative mineral abundances. This research used data and samples supplied 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.