Constraints on biotic and abiotic role in the formation of Fe-Si oxides from the PACMANUS hydrothermal field
文献类型：期刊论文
| 作者 | Yang, Baoju1,2 ; Zeng, Zhigang1; Qi, Haiyan1,3; Wang, Xiaoyuan1; Ma, Yao1; Rong, Kunbo1
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| 刊名 | OCEAN SCIENCE JOURNAL
 |
| 出版日期 | 2015-12-01 |
| 卷号 | 50期号:4页码:751-761 |
| 关键词 | Fe-Si oxides biotic and abiotic role PACMANUS |
| 英文摘要 | 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000367829200012 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/95213]  |
| 专题 | 海洋研究所_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 |
| 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. |
入库方式： OAI收割
来源：海洋研究所
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