*Hitoshi Hasegawa1, Nanase Noma1, Nagayoshi Katsuta2, Masafumi MURAYAMA3, Toru Tamura4, Masami Izuho5, Niiden Ichinnorov6, Davaasuren Davaadorj7, Noriko Hasebe8, Miho Sasaoka9, Masao Iwai9
(1.Faculty of Science and Technology, Kochi Univ., 2.Faculty of Education, Gifu Univ., 3.Faculty of Agriculture and Marine Science, Kochi Univ., 4.Geological Survey of Japan, AIST, 5.Faculty of Social Sciences and Humanities, Tokyo Metropolitan Univ., 6.Mongolian Academy of Sciences, 7.National University of Mongolia, 8.Institute of Nature and Environmental Technology, Kanazawa Univ., 9.Center for Advanced Marine Core Research, Kochi Univ.)