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本文主要研究黄河北煤田沉积岩中砂岩粒度特征,通过粒度分析,为沉积环境的研究提供定量化信息,与传统的相分析对比来进一步验证研究区沉积环境特征。本文结合萨胡环境判别公式,对研究区太原组,山西组,石盒子组分别取样进行粒度分析并得出结论:太原组沉积环境以海相为主,山西组沉积环境以海陆交互的三角洲相为主,石盒子组沉积环境以陆相为主。
In this paper, the grain size characteristics of sandstones in the sedimentary rocks of the Yellow River coalfield are studied. Through the particle size analysis, quantitative information is provided for the study of sedimentary environment. Compared with the traditional phase analysis, the sedimentary environment characteristics of the study area are further verified. Based on the Sahu environmental discrimination formula, the grain size of the Taiyuan Formation, Shanxi Formation and Shihezi Formation in the study area were sampled and analyzed respectively. The conclusion is that the sedimentary environment of Taiyuan Formation is dominated by marine facies, Based, the sedimentary environment of Shihezi Formation is mainly continental.