Shallow-marine ironstones formed by microaerophilic iron-oxidizing bacteria in terminal Paleoproterozoic
文献类型：期刊论文
| 作者 | Lin, Yitian1,2; Tang, Dongjie2,4; Shi, Xiaoying1,2; Zhou, Xiqiang3; Huang, Kangjun5,6 |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 76页码:1-18 |
| 关键词 | Ooidal ironstone Stromatolitic ironstone Microaerophilic iron-oxidizing bacteria Rare earth elements (REEs) Fe isotopes |
| ISSN号 | 1342-937X |
| DOI | 10.1016/j.gr.2019.06.004 |
| 英文摘要 | The microbial origin of Precambrian iron formations is debated due to the lack of direct fossil evidence. In order to reveal the genesis of ironstones under low-oxygen levels, integrative studies of sedimentology, petrography, mineralogy, and geochemistry were conducted on the intertidal to shallow subtidal ooidal and stromatolitic ironstones from the terminal Paleoproterozoic Chuanlinggou Formation (ca. 1.65-1.64 Ga) of North China, using microscopy, SEM, EDS, ICP-OES, ICP-MS and MC-ICP-MS techniques. Mineralogical study shows that the Fe-rich mineral is predominantly hematite that resulted from dehydration of amorphous Fe-oxyhydroxide during diagenesis. Petrographic observation indicates that the iron was oxidized and precipitated from seawater rather than sourced from terrestrial detritus. Basinward increases of the ironstone abundance, Eu anomalies (from 1.39 to 1.56) and delta(56) Fe values of the ironstones (from +0.5 parts per thousand to +1.0 parts per thousand) suggest that the iron was mainly sourced from seafloor hydrothermal fluids, and partially oxidized and precipitated in shallow subtidal to intertidal environments. The common existence of Fe-oxide coated sheaths, spiral stalks, residual extracellular polymer substances (EPS) and other biogenic fabrics indicates that microaerophilic iron-oxidizing bacteria (FeOB) may have played an important role in precipitating the Chuanlinggou ironstones. The extremely low oxygen concentrations implied by the proliferation of microaerophilic FeOB in the shallow waters, the weak positive Ce anomalies (0.94-1.12) and low Mn concentrations in the ironstones are broadly consistent with the previous result of a Cr isotope study. Thus the establishment of a microaerophilic FeOB genetic model for the widespread Chuanlinggou ironstones in North China provides new insight into the origin of Precambrian iron formations and the redox evolution of ocean-atmosphere systems during the "Boring Billion". (C) 2019 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | NORTH CHINA CRATON ; RARE-EARTH-ELEMENT ; ISUA SUPRACRUSTAL BELT ; FE-ISOTOPE ; ATMOSPHERIC OXYGEN ; HYDROTHERMAL VENTS ; OOIDAL IRONSTONES ; PROTEROZOIC OCEAN ; SEDIMENTARY-ROCKS ; FE(II) OXIDATION |
| 资助项目 | National Natural Science Foundation of China[41672336] ; Fundamental Research Funds for the Central Universities[2652018005] ; Fundamental Research Funds for the Central Universities[2652017050] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000493799500001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95719]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Tang, Dongjie; Shi, Xiaoying |
| 作者单位 | 1.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 2.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 4.China Univ Geosci Beijing, Inst Earth Sci, Beijing 100083, Peoples R China 5.Northwest Univ, State Key Lab Continental Dynam, Xian 710069, Shaanxi, Peoples R China 6.Northwest Univ, Early Life Inst, Dept Geol, Xian 710069, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Yitian,Tang, Dongjie,Shi, Xiaoying,et al. Shallow-marine ironstones formed by microaerophilic iron-oxidizing bacteria in terminal Paleoproterozoic[J]. GONDWANA RESEARCH,2019,76:1-18. |
| APA | Lin, Yitian,Tang, Dongjie,Shi, Xiaoying,Zhou, Xiqiang,&Huang, Kangjun.(2019).Shallow-marine ironstones formed by microaerophilic iron-oxidizing bacteria in terminal Paleoproterozoic.GONDWANA RESEARCH,76,1-18. |
| MLA | Lin, Yitian,et al."Shallow-marine ironstones formed by microaerophilic iron-oxidizing bacteria in terminal Paleoproterozoic".GONDWANA RESEARCH 76(2019):1-18. |
入库方式： OAI收割
来源：地质与地球物理研究所
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