| 硼在研究古沉积环境中的作用 |
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| 引用本文： | 吴必豪,许效松,张春增,张群英.硼在研究古沉积环境中的作用[J].石油实验地质,1982,4(2):139-148. |
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| 作者姓名： | 吴必豪 许效松 张春增 张群英 |
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| 作者单位： | 1.中国地质科学院矿床地质研究所 |
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| 摘 要： | 五十年代后期以来,研究微量元素地球化学相标志,用以说明沉积环境的工作日益受到重视,发表的文章越来越多。从已有的资料和我们自己的经验看,硼在研究盆地水介质含盐度的变化方面是一个较有效的标志。本文以江汉盆地潜江凹陷白垩-第三系硼的地球化学研究成果为例,进一步探讨硼在研究沉积环境和评价生油岩中的作用。在探讨之前首先介绍一下样品的处理和分析方法。
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| 收稿时间： | 1981-06-09 |
ROLE OF BORON IN STUDYING ANCIENT SEDIMENTARY ENVIRONMENT |
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| Affiliation: | 1.Institute of Mineral Deposits, Chinese Academy of Geological Science2. Geological Division of Jianghan Petroleum Administration |
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| Abstract: | The purposes of this paper are, firstly, to explore the role of boron in studying ancient sedimentary environment, secondly, to use salinity as a parameter in the evaluation of source rocks. The works on Cretaceous-Tertiary Sequences in Qianjiang depression of Jianghan Basin indicate that in the study of ancient environment, boron in clay minerals is an effective indicator for salinity. For both the entire sedimentary sequence and the individual rhythms, boron can indicate the relative variations of salinity. Since the source of lacustrine sediments may de multiple, the content of boron in clay minerals of terrestrial sediments may also be rather high. Therefore, for distinguishing whether it is of marine or nonmarine facies, several indicators should be utilized together. The relationship between salinity of the sections and their source rock indicators shows that the sediments favorable for oil generation in a salt-bearing basin are the beds with low salinity and the rhythmic beds strongly desalinated. However, as to the individual rhythms, the argillaceous rocks below the saliferous sections representing the most desalinated environment are most favorable for oil generation, especially the oil shale at the upper and middle parts. |
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