| The Role of Organic Matter in the Formation of Siderite from Xuanlong Area,Hebei Province |
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| 作者姓名： | 刘敏 陈志明 |
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| 作者单位： | [1]DepartmentofGeography,EastChinaNormalUniversity,Shanghai,200062 [2]InstituteofGeology,ChineseAcademyofSc |
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| 摘 要： | Based on the analysis of siderite distribution,occurrence,chemical compositionk,structureal characteristics,carbon-oxygen isotopic characteristics and relationship between siderite and hematite,this paper presents a systematic study of siderite in the region studied.suggesting that the siderite in the Xuanlong area genetically resulted from organically reduced primary hematite during the diagenesis.The ferric and ferrous relations directly depend on organic contents.In the presence of organic matter ferrous iron can be converted to ferric iron through or ganic reduction.The above conclusion has also been proved by organic geochemistry.data.
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| 关 键 词： | 河北 菱铁矿 碳同位素 氧同位素 有机地球化学 铁矿床 |
The role of organic matter in the formation of siderite from Xuanlong area, Hebei Province |
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| Liu Min,Chen Zhiming,Chen Qiying.The Role of Organic Matter in the Formation of Siderite from Xuanlong Area,Hebei Province[J].Chinese Journal of Geochemistry,1997,16(1):86-94. |
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| Authors: | Liu Min Chen Zhiming Chen Qiying |
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| Institution: | (1) Department of Geography, East China Normal University, 200062 Shanghai;(2) Institute of Geology, Chinese Academy of Sciences, 100029 Beijing |
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| Abstract: | Based on the analysis of siderite distribution, occurrence, chemical composition, structural characteristics, carbon-oxygen
isotopic characteristics and relationship between siderite and hematite, this paper presents a systematic study of siderite
in the region studied, suggesting that the siderite in the Xuanlong area genetically resulted from organically reduced primary
hematite during the diagenesis. The ferric and ferrous relations directly depend on organic contents. In the presence of organic
matter ferrous iron can be converted to ferric iron through organic reduction. The above conclusion has also been proved by
organic geochemistry data.
This project was financially supported by the National Natural Science Foundation of China (49132050). |
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| Keywords: | Xuanlong area siderite carbon-oxygen isotopes organic reduction |
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