Proposed valid description of ferromanganese crusts and the significance of this method

Yoshio NAKASATO; Akira USUI; Sato HISAAKI; Keisuke NISHI; Kosuke T. GOTO

Presentation information

Oral

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

[M-IS27_2PM1] MarineMarine manganese deposits: Origin, growth processes, and environment

Fri. May 2, 2014 2:15 PM - 4:00 PM 423 (4F)

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

3:30 PM - 3:45 PM

[MIS27-06] Proposed valid description of ferromanganese crusts and the significance of this method

*Yoshio NAKASATO¹, Akira USUI¹, Sato HISAAKI¹, Keisuke NISHI¹, Kosuke T. GOTO² (1.Department of Integrated Arts and Sciences, Kochi University, 2.Geological Survey of Japan)

Keywords:Ferromanganese crusts, Microstratigraphy, Paleoceanography

This study shows valid description of ferromanganese crusts for acid solution method. Before this, we used some detail analyses such as chemistry, mineralogy and microscopy. This method can extract the dissolution fragments from ferromanganese crusts and is more useful than the method used up, until now. The fragments consists of several kinds of minerals, for example, quartz, magnetite and clay mineral. These fragments, possibly, can be classified into detrital, biogenetic, volcanic and hydrogenetic origins.