11:15 AM - 11:30 AM
*Shiono Miki1, Kaoru Kubota2, Kazushige Tanabe3, Kotaro Shirai1 (1.Marine Analytical Chemistry Laboratory, Geosphere and Biosphere Science Group, Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 2.Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology , 3.The University Museum, The University of Tokyo)