4:15 PM - 4:30 PM
*Hirokazu Kawahara1,2, Hidekazu Yoshida3, Nagayoshi Katsuta4, Shoji Nishimoto5, Ayako Umemura3, Ryusei Kuma6 (1.Graduate School of Environmental Studies, Nagoya University, 2.Japan Oil, Gas and Metals National Corporation, 3.Material Research Section, Nagoya University Museum, 4.Faculty of Education, Gifu University, 5.Faculty of Law, Aichi University, 6.Institute for Space-Earth Environmental Research, Nagoya University)