Akira Usui

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Convener, Chairperson

Sun. May 29, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (30) (Ch.30)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ47] Marine Manganese Deposits - Genesis, environment, and development -

convener:Akira Usui(Marine Core Research Center, Kochi University), convener:Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), convener:Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), convener:Takashi Ito(Faculty of Education, Ibaraki University), Chairperson:Takashi Ito(Faculty of Education, Ibaraki University), Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Akira Usui(Marine Core Research Center, Kochi University)

Speaker, Author, Co-Author

Fri. Jun 3, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (30) (Ch.30)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS18] Paleoclimatology and paleoceanography

11:00 AM - 1:00 PM

[MIS18-P12] Sedimentary rhythms of ferromanganese crust induced by glacial-interglacial cycles

*Nanako Koma¹, Hitoshi Hasegawa¹, Akira Usui², Hirokuni Oda⁵, Takashi Ito⁴, Yoshiro Nishio³, Go-Ichiro Uramoto², Takuya Matsuzaki², Tomoyo Okumura² (1.Faculty of science and Technology, Kochi University, 2.Center for Advanced Marine Core Research, Kochi University, 3.Research and Education Faculty, Kochi University, 4.Faculty of Education, Ibaraki Universit, 5.Institute of Geology and Geoinformation, Geological Survey of Japan, AIST)

Sun. May 29, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (30) (Ch.30)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ47] Marine Manganese Deposits - Genesis, environment, and development -

11:00 AM - 1:00 PM

[MZZ47-P05] Estimating the phosphatized ages of ferromanganese crusts by whole-rock Sr isotopic compositions

*Takashi Ito¹, Takanori Nakano², Akira Usui³ (1.Faculty of Education, Ibaraki University, 2.Research Institute for Humanity and Nature, 3.Marine Core Research Center, Kochi University)

11:00 AM - 1:00 PM

[MZZ47-P06] On-site exposure experiment for synthetic manganese minerals

*Akira Usui¹, Kyoko Yamaoka², Teruhiko Kashiwabara³, Hikari Hino⁴ (1.Marine Core Research Center, Kochi University, 2.Geological Survey of Japan, AIST, 3.Japan Agency for Earth-Marine Science and Technol, 4.Graduate School of Integrated Arts & Sciences, Kochi University)

11:00 AM - 1:00 PM

[MZZ47-P07] Microstratigraphy of selected hydrogenetic ferromanganese crusts in the Northwest Pacific: Oceanographic and tectonic controls recorded as secular variations in microstructure, chemical and mineralogical compositions

*Hikari Hino^1,2, Akira Usui³ (1.Japan Oil, Gas and Metals National Corporation, 2.Graduate School of Integrated Arts and Sciences, Kochi University, 3.Center for Advanced Marine Core Research, Kochi University)

11:00 AM - 1:00 PM

[MZZ47-P08] Microstratigraphic correlation among ferromanganese crusts from the Ogasawara Plateau Minami-Seamount

*Tasuku Kamei¹, Masafumi Murayama², Akira Usui³ (1.Agriculture and Marine Science Program,Graduate School of Jntegrated Arts and Sciences,Kochi University, 2.Faculty of Agriculture and Marine Science, Kochi University , 3.Marine Core Research Center, Kochi University)

11:00 AM - 1:00 PM

[MZZ47-P09] Rotation and environment reconstructed for a manganese nodule from Penrhyn Basin, South Pacific using paleomagnetism and rock magnetism

*Hirokuni Oda¹, Wataru Katanoda^1,2, Masafumi MURAYAMA², Akira Usui² (1.Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, 2.Kochi University)