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通过实验室模拟蓝藻的早期成岩过程,获得微生物转化无定形体样品,并对样品进行光学显微镜和扫描电子显微镜形态观察,以及生化成分和碳氢氮元素分析,为干酪根早期演化过程研究提供现代对比实例。研究结果表明:蓝藻在模拟过程中不断被降解,到模拟实验的第95天,蓝藻产荧光物质基本被降解完全,样品呈无定形体状。微生物作用使多糖和蛋白质含量下降,粗脂肪含量上升到12.96%;经微生物转化作用后,蓝藻中的C,N元素含量明显减少,N元素含量比新鲜蓝藻中N元素含量降低了26.98%。可见早期成岩过程中微生物作用使蓝藻形态朝无定体转化,有利于脂类成分的增加,利于成烃。
Through the laboratory simulation of the early diagenesis process of cyanobacteria, amorphous transformed microbial samples were obtained, and the samples were observed by optical microscope and scanning electron microscope, as well as biochemical composition and hydrocarbon nitrogen and nitrogen analysis to provide modern Comparative example. The results showed that the cyanobacteria were continuously degraded during the simulation. By the 95th day of simulation experiment, the fluorescent substances of cyanobacteria were completely degraded, and the samples were in the form of amorphous body. Microbial activity decreased polysaccharide and protein content, and the crude fat content increased to 12.96%. After microbial transformation, the contents of C and N in the cyanobacteria decreased significantly, while the N content decreased 26.98% compared with the fresh cyanobacteria. It can be seen that the role of microorganisms in the early diagenesis changes the morphology of the cyanobacteria towards amorphous, which is beneficial to the increase of lipid components and to hydrocarbon generation.