Japan Geoscience Union Meeting 2018

Presentation information

[JJ] Evening Poster

M (Multidisciplinary and Interdisciplinary) » M-ZZ Others

[M-ZZ41] Marine manganese deposits: from basic to applied sciences

Wed. May 23, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Akira Usui(Marine Core Research Center, Kochi University), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Katsuhiko Suzuki(国立研究開発法人海洋研究開発機構・海底資源研究開発センター, 共同), Takashi Ito(Faculty of Education, Ibaraki University)

[MZZ41-P03] Internal structures in the initial stage of formation of small manganese nodules, in the northeastern Pacific

*Masafumi MURAYAMA1, Shinsuke Yagyu2, Kosei Kawata3, Keiji Horikawa4 (1.Faculty of Agriculture and Marine Science, Kochi University, 2.Center for Advanced Marine Core Research, Kochi University, 3.Faculty of Science, Kochi University, 4.Graduate School of Science and Engineering for Research, University of Toyama)

Keywords:manganese nodule, initial stage of formation, internal structure, micro focus X-ray CT, northeastern Pacific

Small manganese nodules were found at the surface sediment of seamount in the northeastern Pacific during the R/V Hakuho-maru, KH-17-3 cruise. Nondestructive technique of micro focus X-ray computed tomography (μ-CT) allows visualization of the internal structure of these nodules. The thickness of covering Fe-Mn oxide layers in the nodules were a few millimeters which might be in the initial stage of formation of manganese nodule. Here we report the results of internal structures of these manganese nodules.