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首页> 外文期刊>Fresenius environmental bulletin >ORGANIC PETROLOGICAL CHARACTERISTICS OF ORGANIC-RICH MUDSTONES IN THE SHIMENGOU FORMATION OF THE MIDDLE JURASSIC IN YUQIA AREA, NORTHERN MARGIN OFTHE QAIDAM BASIN, CHINA
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ORGANIC PETROLOGICAL CHARACTERISTICS OF ORGANIC-RICH MUDSTONES IN THE SHIMENGOU FORMATION OF THE MIDDLE JURASSIC IN YUQIA AREA, NORTHERN MARGIN OFTHE QAIDAM BASIN, CHINA

机译：柴达木盆地北部缘于桥地区中侏罗世石门沟组富含有机的泥岩的有机岩石学特征。

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A comprehensive organic petrological study of organic-rich mudstones in the Shimengou Formation in Yuqia area was carried out by comprehensively using the identification of whole-rock microscopic components and organic geochemical methods. The results show that organic-rich mudstones formed in different sedimentary environments have obvious differences in their microcomponent characteristics due to changes in organic matter sources. Organic-rich mudstones in coalbearing sections are developed in lake-marsh environments, and organic sources are mainly terrestrial higher plants. The microscopic components are mainly vitrinite group, followed by liptinite group, and the type of organic matter is mainly type II2. The organic-rich mudstones in shale sections are developed in the deep-semi-deep lake environment, and the sources of organic matter in oil shale are mainly low organisms in lakes. The microscopic components are mainly saprolite group, the type of organic matter is type I. The organic matter in dark mudstone is derived from the stable components of higher plants and lower lake organisms, the content of liptinite group is high, followed by the saprolite group. The type of organic matter is mainly II1-II2. Therefore, the evolution of sedimentary environment leading to changes in the source of organic matter is the key controlling factor for the organic- rich mudstone micro-components and differences in organic matter types in the Shimengou Formation.
机译：通过对全岩石微观成分的识别和有机地球化学方法的综合应用，对于恰地区石门沟组富含有机质泥岩的有机岩石学进行了综合研究。结果表明，由于有机质来源的变化，在不同沉积环境下形成的富含有机质的泥岩在微观特征上存在明显差异。含煤段中富含有机物的泥岩是在湖沼环境中发育的，有机源主要是陆生高等植物。微观成分主要是镜质体组，其次是脂铁矿组，有机质的类型主要是II2型。页岩段富含有机质泥岩是在深半深湖环境中发育的，油页岩中有机质的来源主要是湖泊中的低生物。微观成分主要为腐泥土类，有机质类型为I型。深色泥岩中的有机质来源于高等植物和下层湖泊生物的稳定成分，锂皂石组含量较高，其次为腐泥土组。 。有机物的类型主要是II1-II2。因此，导致有机质来源发生变化的沉积环境演变是决定石门沟组富有机质泥岩微组成和有机质类型差异的关键控制因素。

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