摘要
成因地层分析是陆相盆地填图中行之有效的方法。构成盆地的成因地层单位具有多级性，次级成因单位是组成高级成因地层单位的基本要素。正确地识别和划分岩性相、岩性相组合和沉积体系，对合理划分岩石地层单位、查明其成因环境、沉积作用和空间配置关系，研究盆地的发生发展及建立盆地地层格架等均具有重要意义。滦平盆地填图中成功的采用了成因地层分析方法，划分出14个岩性相和10个岩性相组合，根据各岩性相组合的成因联系和空间关系，进一步划分出冲积扇沉积体系、扇三角洲沉积体系和湖泊沉积体系。并根据各沉积体系的空间配置和变化规律，客观地划分了正式和非正式填图单位。
The method about genetic analysis of strata is an effective method in continental basin mapping. It was applied successfully in the mapping process in Luanping basin, fourteen rock faces and ten assemblies of rock faces were distinguished. According to the relation of the origin and space among those assemblies, the alluvial fan sedimentary system. the fan delta sedimentary system and the lake sedimentary system were further divided. Based on the distribution in spaed and changiny regulation of each sedimentary system, formal and unformal lithostratigraphic units were divided objectively.
