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通过对毕节煤田可乐矿区二叠系宣威组、龙潭组、长兴组的岩性岩相组合特征、沉积构造特征、古气候条件、动植物化石的分析,得出区内结构-溪平一带为陆相沉积的宣威组,财神及青场一带为海陆交互相沉积的龙潭组和长兴组,聚煤特征主要为滨海冲积平原成煤和三角洲平原成煤。
Based on the lithofacies assemblage characteristics, sedimentary structural characteristics, paleoclimatic conditions and animal and plant fossils of the Permian Xuanwei Formation, Longtan Formation and Changxing Formation in the Biele coalfield, the authors conclude that the structure within the area - The continental sediments of Xuanwei Formation, Fortuna and Qingchang are the Longtan Formation and Changxing Formation, where the sedimentary facies of the sea and the land are interbedded with each other. The features of the polymetallic coal are mainly coal in the coastal alluvial plain and coal in the delta plain.