4:45 PM - 5:00 PM
*Eito Hirai1, Yasuhito Sekine2, ZHANG NAIZHONG2, Natsumi Noda2, Yoshio Takahashi3, Hiroyuki Kagi4 (1.Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology, 2.Earth-Life Science Institute, Tokyo Institute of Technology, 3.Department of Earth and Planetary Environmental Science, Graduate School of Science, The University of Tokyo, 4.Geochemical Research Center , Graduate School of Science, The University of Tokyo)