山西霍西、西山、平朔、大同、沁水、内蒙准旗和河南禹县煤田或矿区的煤层全硫峰值区常位于下伏砂体较薄带或尖灭处，呈错位关系，可靠性可达９０％。其控制因素是下伏砂体决定的成煤泥炭沼泽基底地形的差异。下伏砂体厚时，沼泽基底常呈现较高地形；在砂体较薄或尖灭的低凹处，常由潜流或迳流带来较多含吸附铁离子的细悬浮粘土及硫酸钙，经还原作用可形成较多的硫铁矿硫，使低凹处形成的煤硫含量较高。这种关系可用来预测低硫煤区及勘探过程中硫含量的变化趋势 Shanxi Peak, Xishan, Pingshuo, Datong, Qinshui, Inner Mongolia Zhunqi and Henan Yu County Coalfield or coal seam sulfur peak area is often located in the next sand body thinner zone or pinch out, showing a dislocation relationship, reliability Up to 90%. The controlling factor is the difference in the topography of the basement of the coal-formed peat swamp determined by the underlying sand body. When the underlying sand body is thick, the marsh base often shows a higher topography. In the low pits where the sand body is thinner or pinch-out, it often leads to more suspended clay and calcium sulfate containing iron ions, After the reduction can form more pyrite sulfur, so that the low formation of coal sulfur content is higher. This relationship can be used to predict trends in sulfur content in low-sulfur coal areas and exploration processes