9:30 AM - 9:45 AM
*Jun-Ichi Kimura1, James B. Gill2, Peter E. van Keken3, Hiroshi Kawabata4 (1.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Scienc and Technology, 2.Department of Earth and Planetary Sciences, University of California Santa Cruz, 3.Department of Terrestrial Magnetism, Carnegie Institution for Science, 4.Multidisciplinary Science Cluster, Interdisciplinary Science Unit, Research and Education Faculty, Kochi University)