4:30 PM - 4:45 PM
*Takafumi Yamamoto1, Jun-ichi Ando1, Naotaka Tomioka2, Tetsuo Kobayashi3 (1.Department of Earth and Planetary Systems Science, Hiroshima University, 2.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 3.Department of Earth and Environmental Science, Kagoshima University)