*Noriyoshi Tsujino1, Daisuke Yamazaki1, Yu Nishihara2 (1.Institute for Planetary Materials, Okayama University, 2.GRC, Ehime University)
convener:Yu Nishihara(Geodynamics Research Center Ehime University), Koichi Momma(National Museum of Nature and Science), Tatsuo Nozaki(Submarine Resources Research Center, Research Institute for Marine Resources Utilization, Japan Agency for Marine-Earth Science and Technology), Nobutaka Tsuchiya(Department of Geology, Faculty of Education, Iwate University)