This research used samples and 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). Funding for this research was provided by Deutsche Forschungsgemeinschaft (DFG Grant BO 1049/7 and KU 920/13). We also thank Mrs. Kornelia Graef for her assistance in CT scanning.