*Demian M Saffer¹, Eiichiro Araki², Achim Kopf³, Laura Wallace⁴, Sean Toczko², Earl Davis⁵, Alex Roesner³ (1.The Pennsylvania State University, 2.JAMSTEC, 3.Univ. Bremen, 4.GNS Science, 5.Pacific Geoscience Centre)

*Chihiro Kinoshita¹, Demian M Saffer², Achim Kopf³, Alexander Rösner ³, Laura Wallace⁴, Eiichiro Araki⁵, Toshinori Kimura⁵, Yuya Machida⁵, Reiji Kobayashi⁶, Earl Davis⁷, Sean Toczko⁵, Stephanie Carr⁸ (1.Graduate School of science,Kyoto University, Japan, 2.Department of Geology, Pennsylvania State University, USA, 3.MARUM, University of Bremen, Germany, 4.GNS Science, NZ, 5.JAMSTEC, Yokohama, Japan, 6.Kagoshima University, Kagoshima, Japan, 7.Pacific Geoscience Centre, Geological Survey of Canada, Canada, 8.Colorado School of Mines, USA)

*Chihiro Kinoshita¹, Demian M Saffer², Achim Kopf³, Alexander Rösner ³, Laura Wallace⁴, Eiichiro Araki⁵, Toshinori Kimura⁵, Yuya Machida⁵, Reiji Kobayashi⁶, Earl Davis⁷, Sean Toczko⁵, Stephanie Carr⁸ (1.Graduate School of science,Kyoto University, Japan, 2.Department of Geology, Pennsylvania State University, USA, 3.MARUM, University of Bremen, Germany, 4.GNS Science, NZ, 5.JAMSTEC, Yokohama, Japan, 6.Kagoshima University, Kagoshima, Japan, 7.Pacific Geoscience Centre, Geological Survey of Canada, Canada, 8.Colorado School of Mines, USA)

*Eiichiro Araki¹, Demian M Saffer², Achim Kopf³ (1.Japan Agency for Marine-Earth Science and Technology, 2.Penn. State Univ., 3.MARUM, Bremen Univ.)

*Alexander Rösner¹, Achim Kopf¹, Earl E. Davis², Demian M. Saffer³, Chihiro Kinoshita³, Sean Toczko⁴ (1.MARUM, Univ. of Bremen, 2.Pacific Geoscience Centre, Geological Survey of Canada, Canada, 3.Department of Geology Pennsylvania State Univ., USA, 4.JAMSTEC, Yokohama, Japan)

*Matt Ikari¹, Yoshihiro Ito^2,4, Kohtaro Ujiie^3,4, Achim Kopf¹ (1.MARUM, University of Bremen, 2.Kyoto University, 3.University of Tsukuba, 4.JAMSTEC)

*Alexander Rösner¹, Achim Kopf¹, Earl E. Davis², Demian M. Saffer³, Chihiro Kinoshita³, Sean Toczko⁴ (1.MARUM, Univ. of Bremen, 2.Pacific Geoscience Centre, Geological Survey of Canada, Canada, 3.Department of Geology Pennsylvania State Univ., USA, 4.JAMSTEC, Yokohama, Japan)

Walter Menapace¹, Alexander Rösner¹, *Miho Asada^2,3, Christian Dos Santos Ferreira¹, Norbert Kaul⁴, Achim Kopf¹, SO251b onboard scientific party (1.MARUM, Center for Marine and Environmental Science, 2.Japan Society for the Promotion of Science, 3.Japan Agency for Marine-Earth Science and Technology, 4.Department of Geosciences, University of Bremen)

*Gregory F Moore¹, Miho Asada², Achim Kopf³, Shuichi Kodaira², Sumito Morita⁴ (1.University of Hawaii at Manoa, 2.JAMSTEC, 3.MARUM, 4.AIST)

*Achim Kopf¹, Michael Tryon², Walter Menapace¹, Simone Kasemann¹, Anette Meixner¹ (1.MARUM, University of Bremen, Germany, 2.SCRIPPS Institution of Oceanography, La Jolla, USA)

Walter Menapace¹, Alexander Rösner¹, *Miho Asada^2,3, Christian Dos Santos Ferreira¹, Norbert Kaul⁴, Achim Kopf¹, SO251b onboard scientific party (1.MARUM, Center for Marine and Environmental Science, 2.Japan Society for the Promotion of Science, 3.Japan Agency for Marine-Earth Science and Technology, 4.Department of Geosciences, University of Bremen)