12:00 PM - 12:15 PM
*Harutaka Sakai1, Saori Hirabayashi1, Toru Nakajima1, Hideki Iwano2, Tohru Danhara2 (1.Department of Geology and Mineralogy Division of Earth and Planetary Sciences, Graduate School of Science Kyoto University, 2.Kyoto Fission-Track Co. Ltd.)