Regional and temporal variability in deposition of marine mangense minerals: A cooperative study in the Norhwestern Pacific seamounts.

Akira Usui

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Poster

Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS18] Marine manganese deposits: Origin, growth processes, and environments

Tue. May 24, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Akira Usui(Dept, Natural Science), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Katsuhiko Suzuki(Research and Development Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology)

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5:15 PM - 6:30 PM

[MIS18-P03] Regional and temporal variability in deposition of marine mangense minerals: A cooperative study in the Norhwestern Pacific seamounts.

*Akira Usui¹ (1.Dept, Natural Science)

Keywords:crust, manganese, northwestern

We report the findings of geological and geochemical analyses of the marine manganese deposits collected druring the cruises of the last years and our interpretation on parameters controlling the grade and abundance of the deposits over the areas and depths. We have found small- and regional-scale occurrence and compositions in relation to oceanographic and geological environments. We used ROVs, submersibles and surface ships, jointly with JAMSTEC, JOGMEC, GSJ and other organizations. The program is planned for next two-three years.