*Shuhei Totsuka¹, Jun-ichiro Ishibashi², Kazuhiko Shimada², Kei Ikehata³, Hideaki Machiyama⁴, Koichi Iijima⁴, Hirofumi Yamamoto⁴, Hidenori Kumagai⁴, Ken Ikehara⁵, Toru Yamasaki⁵, Yutaro Takaya⁶, Toshiro Nagase⁷, Thomas Tindell⁸, Kotaro Yonezu⁸, Yuki Tada⁸ (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 3.Faculty of Life and Environmental Sciences, University of Tsukuba, 4.Research and Development Center for Submarine Resources, JAMSTEC, 5.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 6.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 7.Tohoku University Museum, 8.Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University)

*Koichiro Fujinaga^1,2, Kazutaka Yasukawa^3,1, Tatsuo Nozaki^4,2,1,5, Shiki Machida^1,2, Yutaro Takaya^6,2,1, Junichiro Ohta^1,2, Moei Yano³, Ryo Shimomura³, Erika Tanaka³, Kazuhide Mimura³, Koichi Horinouchi³, Kenji Matsumoto³, Yoichi Usui⁴, Hirofumi Yamamoto⁴, Kentaro Nakamura³, Yasuhiro Kato^2,3,1, KM17-14C cruise members (1.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 2.Frontier Research Centerfor Energy and Resources, School of Engineering, The University of Tokyo, 3.Department of Systems Innovation, School of Engineering, The University of Tokyo, 4.Japan Agencyfor Marine-Earth Science and Technology, 5.Department of Planetology, Graduate Schoolof Science, Kobe University, 6.Department of Resources and Environmental Engineering School of Creative Science and Engineering, Waseda University)

*Jun-ichiro Ishibashi^1,2, Shuhei Totsuka², Akihi Tsutsumi², Naru Tsukamoto², Yusuke Kira², Kazuhiko Shimada¹, Toru Yamasaki³, Ken Ikehara³, Toshiro Nagase⁴, Yutaro Takaya^5,9, Kei Ikehata⁶, Takashi Goto⁷, Chitaro Gouzu⁷, Ryuichi Shinjo⁸, Hideaki Machiyama⁹, Koichi Iijima⁹, Hirofumi Yamamoto⁹, Hidenori Kumagai⁹ (1.Department of Earth and Planetary Sciences, Kyushu University, 2.Graduate School of Science, Kyushu University, 3.National Institute of Advanced Industrial Science and Technology, 4.Tohoku University Museum, 5.School of Creative Science and Enginerring, Waseda University, 6.Faculty of Life and Environmental Sciences, University of Tsukuba, 7.Hiruzen Institute for Geology and Chronology, 8.Faculty of Science, University of the Ryukyus, 9.Japan Agency for Marine-Earth Science and Technology)

*Jun-ichiro Ishibashi^1,2, Shuhei Totsuka², Akihi Tsutsumi², Naru Tsukamoto², Yusuke Kira², Kazuhiko Shimada¹, Toru Yamasaki³, Ken Ikehara³, Toshiro Nagase⁴, Yutaro Takaya^5,9, Kei Ikehata⁶, Takashi Goto⁷, Chitaro Gouzu⁷, Ryuichi Shinjo⁸, Hideaki Machiyama⁹, Koichi Iijima⁹, Hirofumi Yamamoto⁹, Hidenori Kumagai⁹ (1.Department of Earth and Planetary Sciences, Kyushu University, 2.Graduate School of Science, Kyushu University, 3.National Institute of Advanced Industrial Science and Technology, 4.Tohoku University Museum, 5.School of Creative Science and Enginerring, Waseda University, 6.Faculty of Life and Environmental Sciences, University of Tsukuba, 7.Hiruzen Institute for Geology and Chronology, 8.Faculty of Science, University of the Ryukyus, 9.Japan Agency for Marine-Earth Science and Technology)

*Yasuhiro Kato^1,2, Kentaro Nakamura¹, Koichiro Fujinaga^2,1, Kazutaka Yasukawa^1,2, Yutaro Takaya^3,1,2, Junichiro Ohta^2,1, Erika Tanaka¹, Kazuhide Mimura¹, Koichi Iijima^4,1, Shiki Machida^2,1, Tatsuo Nozaki^4,1,2,5, Jun-Ichi Kimura⁴, Hikaru Iwamori^1,4,6 (1.The University of Tokyo, 2.ORCeNG, Chiba Institute of Technology, 3.Waseda University, 4.JAMSTEC, 5.Kobe University, 6.Tokyo Institute of Technology)

*Yuki Tomimatsu¹, Tetsuji Onoue², Daisuke Yamashita³, Tatsuo Nozaki^4,5,6,7, Yutaro Takaya⁸ (1.Graduate school of Science and Technology, Kumamoto University, 2.Faculty of Advanced Science and Technology, Kumamoto University , 3.Satsumasendai City Office, 4.Research and Development Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology, 5.Frontier Research Center for Energy and Resources (FRC- ER), Graduate School of Engineering, Tokyo University, 6.Department of Planetology, Graduate School of Science, Kobe University, 7.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 8.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University)

*Makoto Nagasawa^1,2, Yutaro Takaya¹ (1.Department of Resources and Environmental Engineering, School of Creative Science and Engineering, Waseda University, 2.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

*Makoto Nagasawa^1,2, Yutaro Takaya¹ (1.Department of Resources and Environmental Engineering, School of Creative Science and Engineering, Waseda University, 2.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

*Tatsuo Nozaki^1,2,3,4, Takashi Nikaido⁵, Tetsuji Onoue⁶, Yutaro Takaya^7,1,2,4, Keiko Sato¹, Jun-Ichi Kimura⁸, Qing Chang⁸, Daisuke Yamashita⁶, Honami Sato^4,1, Katsuhiko Suzuki¹, Yasuhiro Kato^2,4, Atsushi Matsuoka⁵ (1.JAMSTEC/R&D CSR, 2.Univ. of Tokyo, 3.Kobe Univ., 4.ChibaTech, 5.Niigata Univ., 6.Kumamoto Univ., 7.Waseda Univ., 8.JAMSTEC/D-SEG)