[M-IS27_2PO1] MarineMarine manganese deposits: Origin, growth processes, and environment

Fri. May 2, 2014 4:15 PM - 5:30 PM Poster (3F)

Convener:*Usui Akira(Dept, Natural Science), Yoshio Takahashi(Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University), Takashi Ito Takashi(Faculty of Education, Ibaraki University), Katsuhiko Suzuki(Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology)

The ferromanganese oxide deposits are integrated precipitates of hydrogenetic iron and manganese oxide with minor useful metal elements. The recent exploration of the deposits using ROV mapping and deep-sea drill provide us with new findings on mineralogy, geochemistry, microbiology, and physical engineering. The session reposts the results of munti-disciplinary, multi-institutional investigation of origin, growth process, resource potential of hydrogenetic and diagenetic ferromanganese nodules and crusts in the Northwestern Pacific oceans

4:15 PM - 5:30 PM

[MIS27-P01] On-site deposition and exposure experiments at a low-temperature hydrothermal area

*Akira USUI¹, Hikari HINO¹, Yohey SUZUKI², Kyoko YAMAOKA³, Kei OKAMURA⁴ (1.Kochi University, 2.Earth & Planetary Sciences, Univ. Tokyo, 3.Geological Survey of Japan, AIST, Tsukuba, 4.Kochi Core Center, Kochi University)

4:15 PM - 5:30 PM

[MIS27-P02] Uranium isotope composition in ferromanganese crusts: Implications for the paleoredox proxy

*Kosuke T. GOTO¹, Ariel D. ANBAR², Gwyneth W. GORDON², Stephen J. ROMANIELLO², Gen SHIMODA¹, Yutaro TAKAYA³, Ayaka TOKUMARU³, Tatsuo NOZAKI⁴, Katsuhiko SUZUKI⁴, Shiki MACHIDA⁵, Takeshi HANYU⁴, Akira USUI⁶ (1.GSJ, AIST, 2.Arizona state University, 3.The University of Tokyo, 4.JAMSTEC, 5.Waseda University, 6.Kochi University)