百色盆地州景矿第三系褐煤显微组分剖析

Macerai Analysis of the Tertiary Brown Coal from Zhoujing Mine,Baise Basin

广西百色盆地州景矿第4煤层为典型的腐殖型褐煤,显微组分中富含树脂体。根据产状和光学性质,树脂体可划分为3种类型。树脂体与样品中的次生有机组分有明确的成因联系,渗出沥青体及与之相应的可溶烃类都属于未成熟阶段树脂体的衍生物,对渗出沥青体的详细研究表明,渗出沥青体可作为褐煤早期生烃与烃类初次运移的标志。

The coal seam No: 4in Zhoujing mine, Baise basin of Guangxi, is referred to as a typical humic type of brown coals, whose maceral composition is characterized by enriched resinites. Based on their occurrence and optical properties, resinites could be subdivided into three types. There is an obvious genetic relation between resinites and secondary organic macerals in samples studied, both the exudatinites and the corresponding soluble hydrocarbons are attributed to the resinite derivatives in immature stage. It is shown from a detailed study of exudatinite that exudatinite could be used as an indicator of early hydrocarbon generation and primary migration in the brown coal.