*Morihisa Hamada¹, Philipp A. Brandl², Takayuki Ushikubo³, Kenji Shimizu³, Motoo Ito³, He Li⁴, Ivan P. Savov⁵ (1.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Science and Technology, 2.GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 4.Guangzhou Institute of Geochemistry, Chinise Academy of Science, China, 5.School of Earth and Environment, The University of Leeds, UK)

*Takahiro Ozawa¹, Takeshi Hanyu², Hikaru Iwamori^2,1, Morihisa Hamada², Takayuki Ushikubo², Kenji Shimizu², Motoo Ito², Jun-Ichi Kimura², Qing Chang², Tsuyoshi Ishikawa² (1.Tokyo Institute of Technology, 2.Japan Agency for Marine-Earth Science and Technology)

*Takeshi Hanyu¹, Kenji Shimizu¹, Takayuki Ushikubo¹, Junji Yamamoto², Katsunori Kimoto¹, Yuriko Nakamura¹, Jun-Ichi Kimura¹, Qing Chang¹, Morihisa Hamada¹, Motoo Ito¹, Hikaru Iwamori¹, Tsuyoshi Ishikawa¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Hokkaido University)