*Ryosuke Oyanagi^1,2, Atsushi Okamoto³, Madhusoodhan Satish-Kumar⁴, Masayo Minami⁵, Yumiko Harigane⁶, Katsuyoshi Michibayashi^2,5 (1.Kokushikan University, 2.Japan Agency for Marine-Earth Science and Technology, 3.Tohoku University, 4.Niigata University, 5.Nagoya University, 6.AIST)

*Kazuki Yoshida¹, Ryosuke Oyanagi^2,3, Atsushi Okamoto¹ (1.Tohoku university, 2.Kokushikan University, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*Katsuyoshi Michibayashi^1,2, Suzu Saito⁸, Kakihata Yuki¹, Yumiko Harigane³, Atsushi Okamoto⁴, Ryosuke Oyanagi⁵, Kohei Hatakeyama^6,7, Ikuo Katayama⁶, Osamu Ishizuka³, Shigeaki Ono² (1.Nagoya University, 2.JAMSTEC, 3.GSJ/AIST, 4.Tohoku University, 5.Kokushikan University, 6.Hiroshima University, 7.Meisei University, 8.Shizuoka University)

*Kenta Yoshida¹, Sota Niki², Hikaru Sawada¹, Ryosuke Oyanagi⁴, Takafumi Hirata², Kenji Asakura³, Takao Hirajima³ (1.Japan Agency for Marine-Earth Science and Technology, 2.Graduate School of Science, the University of Tokyo, 3.Department of Geology and Mineralogy, Kyoto University, 4.Kokushikan University)