本文在对各种宏观沉积特征进行研究的基础上,结合室内分析鉴定,提出第四含煤段是以河流作用为主受潮汐影响的浅水三角洲沉积,河流活动和频繁的泛滥洪水的垂向加积作用影响了泥炭沼泽的发育。活动的三角洲似乎不是成煤的有利场所。图7,表2。参5。 Based on the study of various macroscopic sedimentary characteristics and combining with the indoor analysis and identification, it is proposed that the fourth coal-bearing section is mainly composed of shallow water delta sediments, river activities and frequent vertical flooding floods The plot effect affects the development of the peat swamp. The active delta does not seem to be a good place for coal formation. Figure 7, Table 2. Participation 5.