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通过对已完成勘探工作的吐鲁—驼马滩盆地和公婆泉盆地的资料分析研究,结合岩石学特征,对沉积旋回、沉积环境分析,认为下白垩统含煤沉积盆地是在印支运动及其以前发生的历次运动形成的复杂结晶基底上形成的内陆型沉积盆地,以NE向和NW向构造为主。含煤地层为下白垩统老树窝群下岩组,为一套内陆河流—沼泽碎屑岩含煤建造,旋回结构较为明显,属河流相序含煤建造的旋回结构。煤层多,厚度变化较大,煤层结构为较复杂含煤系数在5%~10%之间,煤质以褐煤为主。
Based on the analysis of the data of Tulu-Lamaotan Basin and Gongpoquan Basin, which have been completed exploration, combined with the petrological characteristics and analysis of sedimentary cycles and sedimentary environment, it is concluded that the Lower Cretaceous coal-bearing sedimentary basin was formed during the Indo- The inland sedimentary basins formed on the complex crystalline substrates formed by the previous movements have been dominated by NE and NW structures. The coal-bearing strata are lower rock formations of the Lower Cretaceous old tree nest group. They are a set of inland river-marsh clastic coal-bearing structures with obvious swirling structure and a swirling structure of coal facies with river facies sequences. There are many coal seams, and the thickness varies a lot. The coal seam structure is more complicated with the coal coefficient between 5% and 10%, and the coal quality is dominated by lignite.