We thank R. Fonseca and F. Barriga for their helpful reviews. 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. Funding for this research was provided by postcruise research grants to K. Lackschewitz and H. Paulick from the Deutsche Forschungsgemeinschaft.