Spatial Distribution of Critical Metals and Chemostratigraphy in Co-Rich Ferromanganese Nodules in the Northwestern Pacific Ocean
文献类型：期刊论文
| 作者 | Ren, Jiangbo1; Yang, Yong1; Yu, Miao1; Liu, Jiancheng4; Luo, Shuaijie3; Li, Jie2 ; Deng, Xianze1; Zhang, Xiuzhan4; Dong, Fang4; Zhang, Limin1
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| 出版日期 | 2024-10-01 |
| 卷号 | 129期号:10页码:15 |
| 关键词 | mu-XRF element mapping high resolution critical metal ferromanganese nodule northwestern Pacific Ocean |
| ISSN号 | 2169-9275 |
| DOI | 10.1029/2024JC021287 |
| 英文摘要 | Ferromanganese nodules are important marine storehouses for critical metals and windows for changing oceans. Although advanced in situ analytical techniques have been applied to visualize the elemental distribution in the nodule cross-sections, their spatial distribution remains largely uncertain. This study addresses this gap by employing micro X-ray fluorescence mapping of parallel nodule cross-sections to delineate the spatial distributions of critical metals (Mn, Fe, Co, Ti, Ni, and Cu) in three Co-rich ferromanganese nodules from the northwestern Pacific Ocean. The 10-layer Os isotopic compositions of one nodule closely align with the well-documented marine Os isotope evolution of seawater, providing a chronological framework and a maximum age of similar to 36 Ma for these nodules. Three concentric chemostratigraphic layers, labeled L1, L2, and L3, were identified from the inside out, based on microscopic structures and the distributions of critical metals. The early growth stage was marked by Mn-rich, Si-rich, and high Mn/Fe ratios, suggesting a diagenetic-driven process attributed to high paleoproductivity conditions because of the low latitude of the study area at that time. The subsequent growth stages are all hydrogenetic in origin to be rich in Fe, Co, and Ti with low Mn/Fe ratios. The apparent detritus present during the second growth stage of the nodules may correspond to the stronger bottom currents in the early Miocene. The final mineralization stage indicates a more stable environment with diminished bottom current activity, leading to the formation of a dense, laminar hydrogenetic layer. The present study bridges the knowledge gap on the spatial distribution of critical metals through the innovative use of micro X-ray fluorescence mapping on parallel sections of three nodules in the northwestern Pacific Ocean. Os isotope stratigraphy establishes a chronological framework and a maximum age of similar to 36 Ma for these nodules. Distinct concentric chemostratigraphic layers, labeled L1, L2, and L3, have been identified in these nodules. The early growth stage of the nodules is characterized by Mn-rich, Si-rich and high Mn/Fe ratios, indicative of a diagenetic-driven process under high paleoproductivity conditions due to the low historical latitude. The subsequent stages are all hydrogenetic in origin to be rich in Fe, Co, and Ti with low Mn/Fe ratios. The apparent detritus present during the second growth stage of the nodules may correspond to the stronger bottom currents in the early Miocene. The final mineralization stage suggested a period of environmental stability with reduced current activity, forming of a hydrogenetic layer enriched in Fe, Co, and Ti. This study not only enhances our understanding of the complex processes that govern the formation and evolution of ferromanganese nodules but also provides deeper insight into the historical shifts within our oceans. Ferromanganese nodule was dated via Os isotope stratigraphy and has a maximum age of similar to 36 Ma Multi-element integrated maps were produced to assist in obtaining clearer chemostratigraphy images of ferromanganese nodules Spatial distribution of critical metals and chemostratigraphy in ferromanganese nodules were visualized via multiple parallel cross-sections |
| WOS研究方向 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001330998700001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81215]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Ren, Jiangbo; Liu, Jiancheng |
| 作者单位 | 1.China Geol Survey, Minist Nat Resources, Key Lab Marine Mineral Resources, Guangzhou Marine Geol Survey, Guangzhou, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou, Peoples R China 3.China Geol Survey, Haikou Marine Geol Survey Ctr, Haikou, Peoples R China 4.China Merchants Marine & Offshore Res Inst Co Ltd, Shenzhen, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Jiangbo,Yang, Yong,Yu, Miao,et al. Spatial Distribution of Critical Metals and Chemostratigraphy in Co-Rich Ferromanganese Nodules in the Northwestern Pacific Ocean[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2024,129(10):15. |
| APA | Ren, Jiangbo.,Yang, Yong.,Yu, Miao.,Liu, Jiancheng.,Luo, Shuaijie.,...&He, Gaowen.(2024).Spatial Distribution of Critical Metals and Chemostratigraphy in Co-Rich Ferromanganese Nodules in the Northwestern Pacific Ocean.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,129(10),15. |
| MLA | Ren, Jiangbo,et al."Spatial Distribution of Critical Metals and Chemostratigraphy in Co-Rich Ferromanganese Nodules in the Northwestern Pacific Ocean".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 129.10(2024):15. |
入库方式： OAI收割
来源：广州地球化学研究所
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