Mineralogical and geochemical evidence for coupled bacterial uranium mineralization and hydrocarbon oxidation in the Shashagetai deposit, NW China
文献类型：期刊论文
| 作者 | Cai, Chunfang; Dong, Hailiang; Li, Hongtao; Xiao, Xinjian; Ou, Guanxi; Zhang, Chunming |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2007-01-15 |
| 卷号 | 236期号:1-2页码:167-179 |
| 关键词 | uranium deposit anaerobic petroleum oxidation sulfate-reducing bacteria nanoparticle microfossil sulfur isotopes |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2006.09.007 |
| 文献子类 | Article |
| 英文摘要 | Unusual mineral structures have recently been found in a sandstone-hosted roll-type uranium deposit in the Middle Jurassic Zhiluo Formation in the Shashagetai deposit, the northern Ordos basin, NW China. The structures possess a chemical composition and crystal structure characteristic of mineral coffinite [(USiO4)(1-x)(OH)(4x)], which occurs as nanoparticles with size ranging from 5 to 25 rim. These structures are interpreted to be fossilized microorganisms, based on mineralogical biosignatures including morphology, size, occurrence of biogenic coffinite as nano-crystals, and biological elements such as P. The intimate intergrowth of coffinite with secondary pyrite of bacterial origin, as defined by low delta S-34 values, and calcite cements with petroleum-derived carbon supports its biogenic origin. Oil inclusions in the host sandstone are characterized by abundant n-alkanes, slightly increased Pr/nC(17) and Ph/nC(18) ratios, significant amounts of demethylated hopanes and tricyclic terpanes, and the existence of unresolved complex mixtures. These characteristics are interpreted to be a result of mixing of an earlier, heavily degraded oil with a later charged fresh oil; subsequently the oils were slightly degraded. These lines of evidence lead to the proposal that the reduction of sulfate and oxidization of petroleum are likely synchronous with reduction of hexavalent [U(VI)] to tetravalent [U(IV)] uranium by sulfate-reducing bacteria (SRB). The discovery of a natural association of microorganism-like structures, a uranium mineral, and biodegraded petroleum has implications for uranium biomineralization and fossil fuel exploration. (c) 2006 Elsevier B.V All rights reserved. |
| WOS关键词 | SULFATE-REDUCING BACTERIUM ; ANAEROBIC OXIDATION ; ISOTOPIC EVIDENCE ; FLUID INCLUSIONS ; ORDOS BASIN ; REDUCTION ; OIL ; ORIGIN ; 25-NORHOPANES ; PETROLEUM |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000243678100010 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68314]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Cai, Chunfang |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Min Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Miami Univ, Dept Geol, Oxford, OH 45056 USA 3.Beijing Res Inst Uranium Geol, Beijing 100029, Peoples R China 4.Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resources, Minist Educ, Hubei 434023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Chunfang,Dong, Hailiang,Li, Hongtao,et al. Mineralogical and geochemical evidence for coupled bacterial uranium mineralization and hydrocarbon oxidation in the Shashagetai deposit, NW China[J]. CHEMICAL GEOLOGY,2007,236(1-2):167-179. |
| APA | Cai, Chunfang,Dong, Hailiang,Li, Hongtao,Xiao, Xinjian,Ou, Guanxi,&Zhang, Chunming.(2007).Mineralogical and geochemical evidence for coupled bacterial uranium mineralization and hydrocarbon oxidation in the Shashagetai deposit, NW China.CHEMICAL GEOLOGY,236(1-2),167-179. |
| MLA | Cai, Chunfang,et al."Mineralogical and geochemical evidence for coupled bacterial uranium mineralization and hydrocarbon oxidation in the Shashagetai deposit, NW China".CHEMICAL GEOLOGY 236.1-2(2007):167-179. |
入库方式： OAI收割
来源：地质与地球物理研究所
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