*Tadamasa Ueda¹, Ichiko Shimizu¹ (1.Department ofEarth and Planetary Science, Graduate School of Science, The University of Tokyo)

*Andrzej Górszczyk¹, Michal Malinowski¹, Stéphane Operto² (1.Institute of Geophysics, Polish Academy of Sciences, 2.Géoazur, CNRS, Université Nice Sophia Antipolis)

*Keishi Okazaki^1,2, Greg Hirth², Ikuo Katayama³ (1.Japan Agency for Marine-Earth Science and Technology, 2.Brown University, 3.Hiroshima University)

*Yuki Kusano¹, Osamu Ishizuka¹, Rosemary Hickey-Vargas², Anders McCarthy³, Gene Yogodzinski⁴ (1.Geological Survey of Japan, 2.Florida International University, 3.University of Lausanne, 4.University of South Carolina)

*Americus Perez¹, Susumu Umino¹, Graciano Yumul Jr.², Osamu Ishizuka³ (1.Kanazawa University, 2.Apex Mining Company Inc., 3.Geological Survey of Japan)

*Eiichi TAKAZAWA^1,2, Keisuke ISHII³, Yuki Nomoto³, Yoshihiko Tamura² (1.Department of Geology, Faculty of Science, Niigata University, 2.R&D Center for ODS, JAMSTEC, 3.Graduate School of Science and Technology, Niigata University)

*Kenta Yoshida¹, Tatsu Kuwatani^1,2, Takao Hirajima³, Hikaru Iwamori¹, Shotaro Akaho⁴ (1.Japan Agency for Marine-earth Science and Technology, 2.PRESTO, Japan Science and Technology Agency, 3.Kyoto University, 4.National Institute of Advanced Industrial Science and Technology)