3:00 PM - 3:15 PM
*Jun-Ichi Kimura1, James B Gill2, Peter E van Keken3, Susanne Skora4, Hiroshi Kawabata5 (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.Institute of Geochemistry and Petrology, ETH, 5.Research and Education Faculty, Kochi University)