*Astin Nurdiana¹, Atsushi Okamoto¹, Masaoki Uno¹, Kenta Yoshida², Takayoshi Nagaya³, Noriyoshi Tsuchiya¹ (1.Tohoku University, 2.Japan Agency for Marine-earth Science and Technology (JAMSTEC), 3.The University of Tokyo)

*OTGONBAYAR DANDAR¹, Atsushi Okamoto¹, Takayoshi Nagaya², Masaoki Uno¹, Noriyoshi Tsuchiya¹ (1.Graduate School of Environmental Studies, Tohoku University, 2.Graduate School of Science, University of Tokyo)

*Yui Kouketsu¹, Kazushi Sadamoto¹, Hayato Umeda², Hirokazu Kawahara³, Takayoshi Nagaya⁴, Tomoki Taguchi⁵, Hiroshi Mori⁶, Simon Richard Wallis⁴, Masaki Enami⁷ (1.Department of Earth & Planetary Sciences, Graduate School of Environmental Studies, Nagoya University, 2.DOWA Metals & Mining Co., Ltd., 3.Japan Oil, Gas and Metals National Corporation (JOGMEC), 4.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 5.Department of Geology and Mineralogy, Graduate School of Science, Kyoto University, 6.Faculty of Science, Shinshu University, 7.Nagoya University)

*Takayoshi Nagaya¹, Simon Richard Wallis¹, Kazuhiro Kawahara², Shunsuke Endo³, Hiroshi Mori⁴, Yoshihiro Asahara⁵ (1.Graduate School of Science, The University of Tokyo, 2.Japan Oil, Gas and Metals National Corporation, 3.Shimane University, 4.Shinshu University, 5.Nagoya University)

*Takayoshi Nagaya¹, Simon Richard Wallis¹, Andrew Walker², James Wookey³, Kazuhiko Ishii⁴, Michael Kendall⁵ (1.Graduate School of Science, The University of Tokyo, 2.University of Leeds, 3.University of Bristol, 4.Osaka Prefecture University, 5.University of Oxford)

*Kazuyuki Yoshida¹, Takayoshi Nagaya¹, Simon Richard Wallis¹ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

*Takayoshi Nagaya¹, Simon Richard Wallis¹ (1.Graduate School of Science, The University of Tokyo)