12:00 PM - 12:15 PM
*Hitomi Nakamura1,2,3, Hikaru Iwamori1,2, Osamu Ishizuka4, Tatsuji Nishizawa2 (1.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Science and Technology, 2.Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 3.ORCeNG, Chiba Institute of Technology, 4.Geological Survey of Japan, Natural Institute of Advanced Industrial and Technology)