*Jiwon Eom¹, Shigeyuki Wakaki², Norikatsu Akizawa¹, Tsuyoshi Ishikawa², Kyoko Yamaoka³, Eiichi TAKAZAWA⁴, Hodaka Kawahata¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Kochi Institute for Core Sample Research, JAMSTEC, 3.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 4.Department of Geology, Faculty of Science, Niigata University)

*Andros Daniel Cruz Salmeron¹, Hideko Takayanagi¹, Shigeyuki Wakaki², Hitomi Uchimura Wakaki³, Takuya Itaki⁴, Tsuyoshi Ishikawa², Yasufumi Iryu¹ (1.Tohoku University, 2.JAMSTEC, 3.Kochi University, 4.AIST)

*Adam David Sproson^1,2, Toshihiro Yoshimura², Takahiro Aze¹, Yusuke Yokoyama^1,2, Naohiko Ohkouchi², Tsuyoshi Ishikawa³, Shigeyuki Wakaki³ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Biogeochemistry, Japan Agency for Marine-Earth Science and Technology, 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)

*Keiji Horikawa¹, Yuuki Tezuka², Takashi Miyazaki³, Shigeyuki Wakaki⁴ (1.Graduate School of Engineer and Science for Research, University of Toyama, 2.Graduate School of Engineer and Science for Education, University of Toyama, 3.Department of Solid Earth Geochemistry, JAMSTEC, 4.Kochi Institute for Core Sample Research, JAMSTEC)