10:15 AM - 10:30 AM
*Takuto Harada1, Shoichi Kiyokawa2, Minoru Ikehara3 (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, 33 Kyushu University, 2.Department of Earth and Planetary Sciences Faculty of sciences, Kyuushu University, 3.Center for Advanced Marine Core Research, Kochi University)