6:15 PM - 7:30 PM
*Hirokazu MASUMOTO1, Tetsuro HIRONO1, Tsuyoshi ISHIKAWA2, Jun KAMEDA3, Hikaru YABUTA1, Hideki MUKOYOSHI4 (1.Department of Earth and Space Science, Graduate School of Science, Osaka University, 2.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 3.Graduate School of Science, Hokkaido University, 4.Faculty of Education and Integrated Arts and Sciences, Waseda University)