*Hiroshi Amakawa¹, Akira Usui², Koichi Iijima¹, Katsuhiko Suzuki¹ (1.Japan Agency for Marine-Earth Science Technology Research and Development (R&D) Center for Submarine Resources, 2.Marine Core Research Center, Kochi University)

Soichiro Uesugi¹, *Yoshio Takahashi¹, Masato Tanaka¹, Teruhiko Kashiwabara², Akira Usui³ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 2.JAMSTEC, 3.Kochi University)

*Atushi Noguchi, Yuhji Yamamoto¹, Hirokuni Oda², Akira Usui¹, Masahiko Sato², Jun Kawai³ (1.Center for Advanced Marine Core Research, Kochi University, 2.Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, 3.Applied Electronics Laboratory, Kanazawa Institute of Technology)

*Akira Usui¹, Hikari Hino², Naotaka Tomioka¹, Shingo Kato⁴, Michinari Sunamura³ (1.Marine Core Research Center, Kochi University, 2.Japan Oil, Gas and Metal Corporation, 3.Dept. Earth and Planetary Sciences, Univ. Tokyo, 4.Japan Marine and Earth Science and Technology Corporation)

*ERI SHIMIZU¹, Akira Usui¹ (1.Kochi University)

*Kyoko Yamaoka¹, Akira Usui^2,1 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Centre for Advanced Marine Core Research, Kochi University)

*Hironori Takahashi¹, Hirokuni Oda², Akira Usui³, Takashi Ito¹ (1.Ibaraki University, 2.National Institute of Advanced Industrial Science and Technology, 3.Kochi University)

*ERI SHIMIZU¹, Akira Usui¹ (1.Kochi University)

*Kyoko Yamaoka¹, Akira Usui^2,1 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Centre for Advanced Marine Core Research, Kochi University)

*Hironori Takahashi¹, Hirokuni Oda², Akira Usui³, Takashi Ito¹ (1.Ibaraki University, 2.National Institute of Advanced Industrial Science and Technology, 3.Kochi University)