5:15 PM - 6:30 PM
*Masaaki Owada1, Yasuhito Osanai2, Nobuhiko Nakano2, Tatsuro Adachi2, Ippei Kitano2, Tri Van Tran3, Hire Kigali4 (1.Graduate School of Science and Engineering, Yamaguchi University, 2.Department of Earth Sciences, Kyushu University, 3.General Department of Geology and Minerals of Vietnam, 4.raduate School of Science and Technology, Niigata University)