Fluid-related manganese deposits at the incoming plate of the Southern Mariana subduction zone
文献类型：期刊论文
| 作者 | Xu, Hengchao ; Peng, Xiaotong; Ta, Kaiwen; Liu, Shuangquan
|
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2024-09-20 |
| 卷号 | 663页码:13 |
| 关键词 | Fluid-related manganese deposits Bending-related fault Mariana subduction zone |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2024.122294 |
| 英文摘要 | Manganese is one of the most abundant transition metals in marine systems, controlling the behaviors of a variety of important elements in oceans worldwide. Deposited manganese minerals in marine systems mainly belong to poorly crystalline manganates or sometime tecto-manganates in the form of crusts and nodules origin from ambient bottom seawater, sediment porewater, or ascending hydrothermal fluids. Here, we report the discovery of two kinds of fluid-related manganese deposits on the incoming plate of the Southern Mariana subduction zone. Hausmannite that rich in copper and zinc with a strong negative Ce anomaly is identified in one sample. Notable features of this unusual manganese mineral indicate that reduced fluid derived from the nearby fluid discharge site reacted with original manganese oxides and then precipitated as hausmannite in the sub-oxic subsurface. However, another fluid derived sample located approximately 60 m away, shows normal hydrothermal mineral and elemental features. The atypical and diverse fluid-related manganese deposits more likely indicate multiple episodes of fluid activities at the subduction front. As bend-faults are proven to induce the fluid discharge at the outer-rise region of the incoming plate, manganese deposits in the present study suggest that an appreciable amount of manganese in the upper lithosphere of the incoming plate may be discharged into seawater through fluid activities before subduction. As such, the mass of manganese subducted into the subduction zone may be much lower than previously expected. |
| WOS关键词 | OGASAWARA BONIN ARC ; HYDROTHERMAL MANGANESE ; FERROMANGANESE DEPOSITS ; MANTLE SERPENTINIZATION ; POLYMETALLIC NODULES ; HAUSMANNITE ; ORE ; TRANSFORMATION ; GEOCHEMISTRY ; SEDIMENTS |
| 资助项目 | Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City[2021JJLH0049] ; National Key Research and Development Program[2022YFC2805403] ; National Key Research and Development Program[2021YFC2800500] ; China Scholarship Council ; Youth Innovation Promotion Association CAS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001282630600001 |
| 出版者 | ELSEVIER |
| 资助机构 | Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City ; National Key Research and Development Program ; China Scholarship Council ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.idsse.ac.cn/handle/183446/11496]  |
| 专题 | 深海科学研究部_深海地质与地球化学研究室 专家咨询委员会 |
| 通讯作者 | Peng, Xiaotong |
| 作者单位 | Chinese Acad Sci, Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya 572000, Hainan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hengchao,Peng, Xiaotong,Ta, Kaiwen,et al. Fluid-related manganese deposits at the incoming plate of the Southern Mariana subduction zone[J]. CHEMICAL GEOLOGY,2024,663:13. |
| APA | Xu, Hengchao,Peng, Xiaotong,Ta, Kaiwen,&Liu, Shuangquan.(2024).Fluid-related manganese deposits at the incoming plate of the Southern Mariana subduction zone.CHEMICAL GEOLOGY,663,13. |
| MLA | Xu, Hengchao,et al."Fluid-related manganese deposits at the incoming plate of the Southern Mariana subduction zone".CHEMICAL GEOLOGY 663(2024):13. |
入库方式： OAI收割
来源：深海科学与工程研究所
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