*Munkhdelger BOLD¹, Yasuhito OSANAI², Nobuhiko NAKANO², Tatsuro ADACHI², Tatsuki TSUJIMORI^1,3, Otgonbayar DANDAR^4,5, Manzshir BAYARBOLD^4,5, Dolzodmaa BOLDBAATAR⁶ (1.Department of Earth Science, Graduate School of Science, Tohoku University, 2.Division of Earth Sciences, Faculty of Social and Cultural Studies, Kyushu University, 3.Center for Northeast Asian Studies, Tohoku University, 4.Graduate School of Environmental Studies, Tohoku University, 5.Geoscience Center, Mongolian University of Science and Technology, 6.Department of Mineral Processing and Engineering, School of Geology and Mining, Mongolian University of Science and Technology)

*Masaaki Owada¹, Atsushi Kamei², Yasuhito Osanai³, Nobuhiko Nakano³, Tatsuro ADACHI³ (1.Graduate School of Science and Engineering for Innovation, Yamaguchi University, 2.Interdisciplinary Faculty of Science and Engineering, 3.Faculty of Social and ultural Studies)