Natural gamma radiation and miscellaneous material from IODP Hole 348-C0002P - Takehiro Hirose; Demian M Saffer; Harold J Tobin; Sean Toczko; Lena Maeda; Yusuke Kubo; Gaku Kimura; Gregory F Moore; Michael B Underwood; Kyuichi Kanagawa; Expedition 348 Scientists (PANGAEA, 2015)