The occurrence is steady and the structure is simple with FM, JM types of coal, whose roof is limestone and siltstone and bottom is muddy siltstone and sandy mudstone;
赋存稳定，结构简单，煤种为FM、JM，煤层顶板为石灰岩、粉砂岩，底板为泥质粉砂岩、砂质泥岩；
The Neoproterozoic Jiuliqiao Formation in Huainan region consists of sandy and silty limestone, stromatolite limestone and dolomitic limestone.
安徽淮南地区新元古代九里桥组主要由砂质、泥质灰岩，叠层石灰岩和白云质灰岩组成。
Cambrain limestone and sandy mudstone were pushed onto the Permian coal measures by the Fufeng thrust in Huainan coalfield.
淮南煤田阜凤逆冲断层是一压性断层，使寒武系灰岩、砂泥岩推覆于二叠系煤系地层之上。
Cambrain limestone and sandy mudstone were pushed onto the Permian coal measures by the Fufeng thrust in Huainan coalfield.
淮南煤田阜凤逆冲断层是一压性断层，使寒武系灰岩、砂泥岩推覆于二叠系煤系地层之上。
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