12:00 PM - 12:15 PM
*Takeshi NAKAJIMA1, Tohru DANHARA2, Tohru YAMASHITA2, Hideki IWANO2, Hirokuni ODA1, Toshiya KANAMATSU3, Xixi Zhao4 (1.Geological Survey of Japan, AIST, 2.Kyoto Fission-Track Co.Ltd., 3.JAMSTEC, 4.University of California Santa Cruz)