Shoichi Kiyokawa 研究室

AI 要約（直近 5 年の研究成果）

※ AI（Claude）が、公開されている論文要旨から研究の問い・手法・主要な発見を事実情報として抽出・再構成して自動生成しています。誤りを含む可能性があるため、正確性は研究室公式情報でご確認ください。

研究成果（11 件）

• [2025] Coupled nitrogen and iron redox cycling in the Paleoarchean: Insights from nitrogen isotope signatures of the ca. 3.25 Ga Mapepe Formation, Barberton Greenstone Belt
  DOI: https://doi.org/10.1016/j.epsl.2025.119659
• [2025] Nitrogen cycling in the Paleoarchean ocean: Isotope records from the Mapepe Formation of the Barberton Greenstone Belt
  DOI: https://doi.org/10.7185/gold2025.26398
• [2024] Lateral redox variability in ca. 1.9 Ga marine environments indicated by organic carbon and nitrogen isotope compositions
  DOI: https://doi.org/10.1111/gbi.12614
• [2024] Nitrogen isotope gradient on continental margins during the late Paleoproterozoic
  DOI: https://doi.org/10.1016/j.gca.2024.02.022
• [2022] The nitrate-limited freshwater environment of the late Paleoproterozoic Embury Lake Formation, Flin Flon belt, Canada
  DOI: https://doi.org/10.1016/j.chemgeo.2022.121234
• [2022] Stratigraphic reconstruction of the lower–middle Miocene Goto Group, Nagasaki Prefecture, Japan
  DOI: https://doi.org/10.1111/iar.12456
• [2022] Nitrogen cycling in the late Paleoproterozoic freshwater environment
  DOI: https://doi.org/10.46427/gold2022.9869
• [2021] Redox fluctuation and δ13Corg-δ34S perturbations recorded in the 1.9 Ga Nuvilik Formation of the Cape Smith belt, Canada
  DOI: https://doi.org/10.1016/j.precamres.2021.106191
• [2021] Progressive ocean oxygenation at ~2.2 Ga inferred from geochemistry and molybdenum isotopes of the Nsuta Mn deposit, Ghana
  DOI: https://doi.org/10.1016/j.chemgeo.2021.120116
• [2021] Hydrothermal formation of iron-oxyhydroxide chimney mounds in a shallow semi-enclosed bay at Satsuma Iwo-Jima Island, Kagoshima, Japan
  DOI: https://doi.org/10.1130/b35782.1

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所属学会・役職（0 件）

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