| Constraints on biotic and abiotic role in the formation of Fe-Si oxides from the PACMANUS hydrothermal field | |
Yang, Baoju1,2 ; Zeng, Zhigang1; Qi, Haiyan1,3; Wang, Xiaoyuan1; Ma, Yao1; Rong, Kunbo1
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| 2015-12-01 | |
| 发表期刊 | OCEAN SCIENCE JOURNAL
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| 卷号 | 50期号:4页码:751-761 |
| 文章类型 | Article |
| 摘要 | Fe-Si oxide deposits were recovered from the PACMANUS (Papua New Guinea-Australia-Canada-Manus) hydrothermal field in Eastern Manus basin. Samples were loose and fragile. Optical and scanning electron microscopy showed that the samples had abundant rod-like or twisted filamentous and granular structures. Electron probe microanalysis revealed that these filaments and grains were mainly composed of Fe and Si. The presence of spherical grains on the surface of the filaments suggests the intergrowth of biotic and abiotic reactions. Biotic and abiotic kinetics competition always exists in the redox gradient. Based on the physico-chemical conditions of PACMANUS hydrothermal fluids, we calculated a strict abiotic oxidation rate of Fe2+ to Fe3+, which is approximately 0.0123 g/min. If the fluids had been erupting consistently and the concentration of Fe2+ was constant, 3.232 kg per year of Fe would be deposited in this vent. The amount of Fe oxides around the studied vent was larger than the amount determined by strict abiotic kinetic calculation. Bacteria may also play an important role in Fe oxidation. A mesh-like microenvironment constructed by biogenic filaments ensured adequate Fe2+ and low oxygen content for the growth of bacteria. Moreover, this structure promoted the deposition of abiotic Fe-Si oxides. |
| 关键词 | Fe-si Oxides Biotic And aBiotic Role Pacmanus |
| DOI | 10.1007/s12601-015-0067-4 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000367829200012 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/95213 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, Qingdao 266061, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China 3.Chengdu Univ Technol, Chengdu 610059, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Yang, Baoju,Zeng, Zhigang,Qi, Haiyan,et al. Constraints on biotic and abiotic role in the formation of Fe-Si oxides from the PACMANUS hydrothermal field[J]. OCEAN SCIENCE JOURNAL,2015,50(4):751-761. |
| APA | Yang, Baoju,Zeng, Zhigang,Qi, Haiyan,Wang, Xiaoyuan,Ma, Yao,&Rong, Kunbo.(2015).Constraints on biotic and abiotic role in the formation of Fe-Si oxides from the PACMANUS hydrothermal field.OCEAN SCIENCE JOURNAL,50(4),751-761. |
| MLA | Yang, Baoju,et al."Constraints on biotic and abiotic role in the formation of Fe-Si oxides from the PACMANUS hydrothermal field".OCEAN SCIENCE JOURNAL 50.4(2015):751-761. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Constraints on Bioti（758KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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