山西上古生界的主要工业可采煤层,都赋存在上石炭统上部以Pseudoschwagerina(s.l.)带为标志的太原阶和山西阶中(张志存,1985);在山西绝大部分地区,太原阶和山西阶都是海陆交替相的含煤岩系.对山西以及华北不同地区上石炭统含煤地层的确切对比,进而查明同一沉积期内不同地区地层和沉积矿产的变化特征,是客观 The main industrial recoverable coal seams in the Upper Paleozoic in Shanxi Province are both Taiyuan and Shanxi (Zhang Zhuncun, 1985) marked by the Pseudoschwagerina (sl) belt in the upper part of the Upper Carboniferous. In most parts of Shanxi, the Taiyuan and Shanxi gradations are coal-bearing rock series with alternate phases of sea and land.The exact contrast of the Upper Carboniferous coal-bearing strata in Shanxi and other parts of North China, and then the variation characteristics of strata and sedimentary minerals in different areas during the same depositional period are objective