通过对鄂尔多斯盆地大量代表性钻孔、实测剖面、样品测试等煤田地质资料和石油地质等资料的综合研究,应用新的沉积学理论和方法,对主要含煤地层中侏罗统延安组按成因地层单位划出五个相应的段,并分别作了沉积环境、聚煤规律的较详细研究,指出了鄂尔多斯盆地今后找煤方向。 Through the comprehensive study on a large number of representative boreholes in the Ordos Basin, measured profiles, sample tests and other geological data and petroleum geology data, a new sedimentology theory and method are applied to investigate the characteristics of Yan’an Formation in the Jurassic strata of main coal-bearing strata The strata unit draws out five corresponding sections, and makes a more detailed study on sedimentary environment and coal accumulation law respectively, and points out the direction of looking for coal in Ordos Basin.