9:30 AM - 9:45 AM
*Madhusoodhan Satish-Kumar1, Kenji Horie2, Ian S. Williams3, Mami Takehara2, Tomokazu Hokada2, Naho Otsuji4 (1.Department of Geology, Faculty of Science, Niigata University, 2.National Institute of Polar Research, Tachikawa, Tokyo 190-8518, Japan, 3.Research School of Earth Sciences, Australian National University, Canberra, ACT 2601, Australia, 4.JFE Techno-Research Corporation, Kawasaki, Japan)