*Ken Yamaoka¹, Tokiyuki Morohoshi², Daisuke Sato¹, Kazuto Mikuni^1,3 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Department of Earth & Planetary Science, Graduate School of Science, The University of Tokyo, 3.Department of Earth and Planetary Sciences, Institute of Science Tokyo)

*Kazuhiro Miyazaki¹, Takeshi Ikeda² (1.Geological Survey of Japan/National Institute of Advanced Industrial Science and Technology, 2.Kyushu Univ.)

*Kazuhito Ozawa¹, Hideto Yoshida², Eman Saad³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.Department of Geology, Assiut University, Egypt)

*Masaoki Uno¹, Masayoshi Hoshida¹, Noriyoshi Tsuchiya^1,2 (1.Graduate School of Environmental Studies, Tohoku University, 2.National Institute of Technology, Hachinohe College)

*Mizuki Takahashi ¹, Shunsuke Endo¹, Kenji Horie², Mami Takehara² (1.Graduate school of Natural Science and Technology, Shimane University , 2.National Institute of Polar Research)

*Koyomi Abe¹, James A. D. Connolly^2,4, Tomokazu Hokada³, Sajeev Krishnan⁴, Madhusoodhan Satish-Kumar⁵ (1.Graduate School of Science and Technology, Niigata University, 2.ETH Zurich, 3.National Institute of Polar Research, 4.Centre for Earth Sciences, Indian Institute of Science, 5.Faculty of Science, Niigata University)