| 河北宣龙地区铁质包壳粒及其形成的微生物作用 |
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| 引用本文： | 刘敏.河北宣龙地区铁质包壳粒及其形成的微生物作用[J].沉积学报,1998,16(2):24-29. |
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| 作者姓名： | 刘敏 |
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| 作者单位： | 1.华东师范大学资源与环境学院地理系 上海 200052; |
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| 基金项目： | 国家自然科学基金(编号49132050) |
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| 摘 要： | 通过对宣龙地区“鲕状矿石”的详细镜下切片观察，与叠层石结构、形态和成分的对比，以及稳定同位素和有机地球化学特征分析研究，提出“鲕状矿石”实际上均为微生物成因的铁质包壳粒，并按其形态分为核形石，微生物鲕石、微生物豆石三种类型。对铁质包壳粒的微生物矿化作用也作了初步探讨。
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| 关 键 词： | 铁质包壳粒 微生物作用 宣龙地区 |
| 收稿时间： | 1997-05-26 |
Iron Coated Grains and Microorganic Process in Their Formation from the Xuanlong Area,Hebei Province |
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| Institution: | 1.Department of Geography, East China Normal University, Shanghai 200062;2.Institute of Geology, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | Based on the detailed determination under microscope,the comparison with the texture,shape and composition of iron stromatolites,as well as on the analyses and studies of stable isotopes and organic geochemistry of oolitic ores from the Xuanlong area,the paper proposed preliminarily that oolitic ores actually are coated grains by the formation of microorganisms.They can be divided into oncolites,microorganic oolites and piolites in the terms of shape.Moreover,the paper disscussed the microorganic mineralization of iron coated grains. |
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| Keywords: | iron coated grains\ microorganic function \ Xuanlong area |
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