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. Jon Fong and Steve Studley of Indiana University assisted with the laboratory work. Funding for this research was provided by Grant-in-aid for Exploratory Research KAKENHI 16654080 by JSPS.