Convener:*Mihoko Hoshino(National Institute of Advanced Industial Science and Technology), Kyoko Yamaoka(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Tatsuo Nozaki(Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology), Ryohei Takahashi(Graduate School of Engineering and Resource Science, Akita University), Chair:Kyoko Yamaoka(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Tatsuo Nozaki(Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology)