Tatsuya Hayata¹, *Yuki Haneda², Makoto Okada¹, Yoshimi Kubota³ (1.Department of Earth Sciences, Faculty of Science, Ibaraki University, 2.Graduate School of Science and Engineering, Ibaraki University, 3.National Museum of Nature and Science)

*Ryuji Tada¹, Tomohisa Irino², Ken Ikehara³, Akinori Karasuda¹, Song Lu², Arisa Seki¹, Saiko Sugisaki³, Chang Xuan⁴, Takuya Itaki³, Takuya Sagawa⁵, Yoshimi Kubota⁶, Richard W Murray⁷, Carlos A Alvarez Zarikian⁸, Exp 346 Scientists (1.Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo, 2.Graduate School of Environmental Science, Division of Earth System Science, Hokkaido University, 3.Reserch Institute of Geology and Geoinformation, Geological Survey of Japan, 4.School of Ocean and Earth Science, University of Southampton, 5.School of Natural System, Graduate School of Natural Science and Technology, Kanazawa University, 6.Department of Geology and Paleontology, National Museum of Nature and Science, 7.Earth and Environment, Boston University, 8.International Ocean Discovery Program, Texas A & M University)

*Keiko Shirota¹, Yusuke Okazaki², Susumu Konno², Yoshimi Kubota³, Yusuke Yokoyama⁴, Hirokuni Oda⁵ (1.Department of Earth and Planetary Sciences, Graduated School of Science, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 3.National Museum of Nature and Science, 4.Atmosphere and Ocean Research Institute, University of Tokyo, 5.Institute of Geology and Geoinformation, Geological Survey of Japan, AIST)

*Yoshimi Kubota¹, Etsuko Wakisaka², Steven Clemens³, Ann Holbourn⁴, Kyung Eun Lee⁶, Martin Ziegler⁷, Keiji Horikawa², Katsunori Kimoto⁵ (1.National Museum of Nature and Science, 2.University of Toyama, 3.Brown University, 4.Christian-Albrechts-University, 5.JAMSTEC, 6.Korea Maritime University, 7.Utrecht University)