摘要
///It is exposed large areas of the Xiaosang survey area that the nappe system body of middle-down system of Cambrian of the Lintian Group, the up systen of Dongkengkou Group, the Daozikeng Group, down system of Carboniferous of Lindi Group, using the theory of nappe, combined with deep drilling verification. It stored thick coal strata (Tongziyan group) and mining coal seam under nappe, and its great potential for coal, nappe theory to guide deep for coal has significance.