Tatsuya Segawa

Medical & Biological Laboratories (Japan)

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Kosei Aikawa

Hokkaido University

Naoki Hiroyoshi

Hokkaido University

Hiroshi Noda

Kyoto University

Naoya Yamazato

Yuichiro Tanaka

Kyushu Institute of Technology

Isao Motoyama

Yamagata University

Sanghee Jeon

Akita International University

Shungo Kawagata

Yokohama National University

Carlito Baltazar Tabelin

Mindanao State University – Iligan Institute of Technology

Mayumi Ito

Hokkaido University

Cooperative Institutions

Hokkaido University

National Institute of Advanced Industrial Science and Technology

Tohoku University

Kyoto University

Czech Academy of Sciences, Institute of Geology

Geological Survey of Japan

The University of Tokyo

University of Tsukuba

Korea Maritime and Ocean University

Seoul National University

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Depression of lead-activated sphalerite by pyrite via galvanic interactions: Implications to the selective flotation of complex sulfide ores

Minerals Engineering (2020)

Kosei Aikawa Mayumi Ito Tatsuya Segawa Sanghee Jeon Ilhwan Park

Sulfide Minerals

Gangue

Lead sulfide

Mineral processing

Froth flotation

Iron sulfide

10.1016/j.mineng.2020.106367

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Citations (67)

Some new calcareous nannofossil ages of the Neogene marine Shimajiri Group in Kume-jima Island, Ryukyu Islands, Japan.

The Journal of the Geological Society of Japan (2002)

Shungo Kawagata Yuichiro Tanaka Isao Motoyama Hiroshi Noda Naoya Yamazato

Calcareous nannofossil biostratigraphy was studied for the Neogene marine Shimajiri Group distributed in Kume-jima Island, Ryukyu Islands, southwestern Japan. Out of 21 samples examined in this study, 14 samples yielded calcareous nannofossils. As was reported in a previous study, Zones CN9 and CN12 of Okada and Bukry (1980) were recognized in this study. In addition, Subzone CN11b (early Pliocene) was newly identified in the lower parts of the sequence where the ages were previously assigned to the late Miocene (upper part of Zone CN9 or older). This result shows the difficulty of establishing the stratigraphy of the subjected group based mainly upon lithotratigraphy, particularly in the lower part. Additional biostratigraphic data are needed to establish the reliable stratigraphy of the marine Shimajiri Group in Kume-jima Island.

Neogene

10.5575/geosoc.108.540

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Citations (4)