Program for deep sea research, Institute for research on earth evolution (IFREE), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, 237-0061 Japan
Department of Geology and Mineralogy, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, Kyoto, 606-8502 Japan
Department of Natural Environmental Science, Kochi University, 2-5-1 Akebono-cho, Kochi, 780-8520 Japan
Department of Earth Sciences, National Central University, No.300, Jhongda Rd, Jhongli, 320 Taiwan