11:15 AM - 11:30 AM
*Isao Motoyama1, Toshiaki Maruyama1, Tomohiro Nishimura2, Kazuhiko Sakurai2, Akane Kasukawa1, Kenji M. Matsuzaki3 (1.Department of Earth and Environmental Sciences, Yamagata University, 2.Hobetsu Museum, 3.Geological Survey of Japan, AIST)