5:15 PM - 6:45 PM
*Risa Shigi1, Masashi A. Ikeda2, Takuto Ando3, Ken Sawada2 (1.Department of Natural History Sciences, Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.Department of Earth Resource Science, Akita University, Akita, Akita, Japan)