3:00 PM - 3:15 PM
*Jinya Nakamura1, Ken Sawada2, Masashi A Ikeda1, Hideto Nakamura3, Minoru Tsukagoshi4 (1.Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.Faculty of Science, Osaka City Univerisity, 4.Osaka Museum of Natural History)