Re-explanation relation between limestone layers and coal seam thickness of the Taiyuan Formation in Shanxi Province

摘要

Based on the strata, lithologic association and coal-bearing property - using the method of synthetic correlation - the relation between limestone layers and the thick coal seam of the Taiyuan Formation in Shanxi Province has been assessed in this study. It was found that the thickness of strata decreased from southeast to southwest, the coal seam thickness was more in the north and west but less in the south and east, and the thickness of limestone increased from east to west. The negative relationship of the coal seam and limestone is associated with the direction variation of transgression, tectonic movement and sedimentary environmental. Summarized the coal seam thickness and limestone layers in the types of thick-thick, thin-thin, thick-thin. Moreover, the discussed boundary division of the Taiyuan Formation in Shanxi Province, from north to south, were lined in the bottom of the 9th coal seam in Datong-Ningwu area, the 10th coal seam in Xishan area, the 11th coal seam in the west of Huozhou-Qinshui area, and the 16th coal seam in the Qinshui Basin.