Geological constraints on the formation of ferromanganese micronodules and the deep-sea environment
| Project/Area Number |
16H07029
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Geology
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| Research Institution | Forest Research and Management Organization |
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Principal Investigator |
Manaka Takuya 国立研究開発法人森林研究・整備機構, 森林総合研究所, 任期付研究員 (00784703)
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| Project Period (FY) |
2016-08-26 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | マンガン団塊 / マイクロマンガンノジュール / 地質学 / 海底資源 / 深海環境 / 環境変動 / 地球化学 / 海洋科学 / 海洋資源 |
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| Outline of Final Research Achievements |
In order to determine formation processes of ferromanganese macronodules and the deep-sea environment, I focused on micronodules in the deep-sea sediments in the North Pacific Ocean. I observed internal structure of the micronodules by making petrographic thin sections and using a micro-CT scanner, and found a low-density nuclei, which was coated with thin layers of high-density Fe-Mn oxides. High Mn/Fe ratios in the majority of the micronodules should be due to the relatively reductive condition of the surrounding seawater, when the micronodules were formed.
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Report
(3 results)
Research Products
(3 results)
