*Shunsuke KUROKAWA¹, Ryuji TADA¹, Takuya ITAKI², Satoshi TAKAHASHI¹ (1.Department of Earth and Planetary Science, University of Tokyo, 2.Geological Survey of Japan, AIST)

*Takuya SAGAWA¹, Ryuji TADA², Ken IKEHARA³, Tomohisa IRINO⁴, Takuya ITAKI³, Saiko SUGISAKI², Yoshimi KUBOTA⁵, Akinori KARASUDA², Xuan Chuang⁶, Yoshitaka NAGAHASHI⁷, Yasufumi SATOGUCHI⁸, Takeshi NAKAGAWA⁹, Richard W. Murray¹⁰, Carlos A. Alvarez-Zarikian¹¹, 346, Scientists EXPEDITION¹¹ (1.Faculty of Sciences, Kyushu University, 2.Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo, 3.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Techn, 4.Faculty of Environmental Earth Science, Hokkaido University, 5.National Museum of Nature and Science, 6.School of Ocean and Earth Science, Univ. of Southampton, 7.Fukushima University, 8.Lake Biwa Museum, 9.Ritsumeikan University, 10.Earth & Environment, Boston University, USA, 11.Integrated Ocean Discovery Program, Texas A&M University)

*Takuya ITAKI¹, Isao MOTOYAMA², Yasumi YAMADA³, Kenji M. MATSUZAKI¹, Ken IKEHARA¹, Ryuji TADA⁴ (1.Geological Survey of Japan / AIST, 2.Department of Earth and Environmental Sciences, Yamagata University, 3.Marine Works Japan Ltd, 4.Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo)

*Atsuko AMANO¹, Takuya ITAKI¹ (1.Geological Survey of Japan, AIST)