| 中国东部若干封闭含油气盆地泥质岩地球化学的研究 |
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| 引用本文： | 李建仁,王苏民.中国东部若干封闭含油气盆地泥质岩地球化学的研究[J].湖泊科学,1990,2(1):30-36. |
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| 作者姓名： | 李建仁 王苏民 |
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| 作者单位： | 中国科学院南京地理与湖泊研究所，中国科学院南京地理与湖泊研究所 |
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| 摘 要： | 中国东部沿北东、北北东向断裂发育了一系列早第三纪含油气断陷盆地。受干旱气候的影响,这些盆地常为封闭或半封闭的咸水湖泊环境。本文通过对其中若干盆地泥质岩的化学分析,确认泥质岩主要由粘土矿物组成,并含少量碳酸盐。将盆地的沉积环境,尤其是盐度与一些地球化学参数关系作了探讨后认为,低盐度时 Sr/Ba、Ca、Mg 总量、Ca/Mg、V/Ni 和 Mn/Fe 能反映湖泊在时空上的盐度变化。高盐度时,Sr/Ba、CaCO_3、B 与盐度正相关已不复成立,并对其原因作了讨论。
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Geochemical characteristics of mudstones in several oil and gas-bearing closed basins, east China |
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| Li Jianren and Wang Sumin.Geochemical characteristics of mudstones in several oil and gas-bearing closed basins, east China[J].Journal of Lake Science,1990,2(1):30-36. |
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| Authors: | Li Jianren and Wang Sumin |
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| Institution: | Nanjing Institute of Geography and Limnology, Academia Sinica and Nanjing Institute of Geography and Limnology, Academia Sinica |
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| Abstract: | A number of oil and gaa-bearing closed rift basins were formed at Early Tertiary along the great faults, stretching in a NE or NNE direction in East China.These basins were often evolved into closed or semi-clcsed saline iakes as a result of arid climate.The chemical content of mudstones in some of there basins indicates that mudstones are composed of clay minerals and a small amount of carbonates. The relationship between the sedimentary environments, especially salinity and some geochemical indexes, is studied and it is believed that Sr/Ba, total Ca/Mg, Ca/Mg, V/Ni and Mn/Fe can reveal the temporal and spatial changes in salinity of the iakes at the stage of 1ow salinity.However, there exists no positive correlation among Sr/Ba, CaCO3, B and salinity at supersaturated stage. |
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