*Du Khac Nguyen1, Tomoaki Morishita1, Yusuke Soda1, Biswajit Ghosh2, Yumiko Harigane3, Christopher J. MacLeod4, Peter Blum5, Henry J.B Dick6
(1.School of Natural System, College of Science and Technology, Kanazawa University, Japan, 2.Department of Geology, University of Calcutta, India, 3.Institute of Geology and Geoinformation, Geological Survey of Japan, 4.School of Earth and Ocean Sciences, Cardiff University, Wales, 5.International Ocean Discovery Program, Texas A&M University, USA, 6.Department of Geology and Geophysics, Woods Hole Oceanographic Institution, USA)