1:45 PM - 2:00 PM
*Ryuji Tada1, Arisa Seki1, Masafumi MURAYAMA2, Ken Ikehara3, Masayuki Ikeda4 (1.Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo, 2.Department of Marine Resource Science, Faculty of Agruculture and Marine Science, Kochi University, 3.Geological Survey of Japan, AIST, 4.Department of Earth Sciences, Faculty of Science, Shizuoka University)