2:15 PM - 2:30 PM
Koyo Kumazawa2, *Masayuki Hyodo1,2, Kotaro Hirose1,2, Shigehiro Katoh3, Osamu Kazaoka4, Itaru Ogitsu4, Hisashi Yabusaki4 (1.Research Center for Inland Seas, Kobe University, 2.Graduate School fo Science, Kobe University, 3.Division of Natural History, Hyogo Museum of Nature and Human Activities, 4.Research Institute of Environmental Geology, Chiba)