3:30 PM - 4:45 PM
*Mao Watanabe1, Hiroyuki Kagi1, Shigenori Ogihara2, Yui Kouketsu3, Fumiaki Okumura4, Hirotsugu Iwano4, Amane Waseda4 (1.Geochemical Laboratory, Graduate School of Science, University of Tokyo, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.Graduate School of Environmental Studies, Nagoya University, 4.Japan Petroleum Exploration Co., Ltd.)