Moscow University Geology Bulletin ( IF 0.3 ) Pub Date : 2022-04-14 , DOI: 10.3103/s0145875222010112 D. A. Marunova 1 , N. V. Pronina 1 , A. G. Kalmykov 1 , D. A. Ivanova 1 , G. A. Kalmykov 1
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Abstract
The results of coal petrographic and geochemical studies of the organic matter from the Tutleim Formation rocks in the area of the Em-Egovskaya summit are presented. Five macerals that compose the organic matter of the formation are identified: “standard” bituminite, “atypical” bituminite, radiolarian organic matter, alginite, and vitrinite, as well as bitumen and bituminous films being the products of the original organic matter transformation. The metamorphism in macerals during catagenesis is described and the order of their entry into the generation phase is established. It is shown that alginite is transformed first, then “standard” bituminite, “atypical’ bituminite, and last is radiolariam organic matter. The results we obtained are confirmed by the laboratory modeling of the further organic matter transformation. New bitumens are formed with different fluorescent properties compared to the original ones. These results together with the study of alterations in the compositions of both macerals and bitumens enable the assessment of the contributions made by individual organic matter microcomponents to the process of petroleum hydrocarbon generation.
中文翻译：
Tutleim组岩石中有机质的转化阶段及其显微组成
摘要
介绍了 Em-Egovskaya 峰区 Tutleim 组岩石中有机质的煤岩学和地球化学研究结果。确定了构成地层有机质的五种微量物质：“标准”烟煤、“非典型”烟煤、放射虫有机质、海藻石和镜质体，以及作为原始有机质转化产物的沥青和沥青薄膜。描述了退化过程中的变质作用，并确定了它们进入生成阶段的顺序。结果表明，首先转化的是海藻石，然后是“标准”烟煤、“非典型”烟煤，最后是放射虫有机质。我们获得的结果通过进一步有机质转化的实验室模型得到证实。与原始沥青相比，新沥青具有不同的荧光特性。这些结果与对微晶质和沥青成分变化的研究能够评估单个有机物质微组分对石油烃生成过程的贡献。
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