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辽西金-羊(金岭寺-羊山)盆地土城子组为一套红色陆相碎屑岩组合.据其岩层垂向叠置规律及不整合面特征,可划分出3个Ⅲ级旋回层序,14个Ⅳ级旋回层序及各旋回层序所对应的冲积扇、滨湖、浅湖、最大湖泛面、风成沙漠沉积体系.这些沉积体系的有规律叠置,构成了土城子期3次湖扩张-湖萎缩沉积序列,其顶、底为明显的不整合面所界定.通过对旋回层序的划分和对比,建立了辽西金-羊盆地土城子组层序地层格架,从而揭示了中生代侏罗纪上统土城子组沉积期的盆地演化规律.
Tuchengzi Formation in Liaoxi gold-goat (Jinlingsi-Yangshan) basin is a set of red terrestrial clastic assemblages.According to the superimposed vertical strata and unconformity features, three Ⅲ-level cycles , 14 Ⅳ-level cycles and alluvial fan, lakes and lakes, shallow lakes, the largest lake flooding and aeolian desert sedimentary system corresponding to each cycle sequence.These sedimentary systems are regularly superimposed to form the Tuchengzi The sequence of lake dilatancy and lake shrinkage was defined as the unconformity between the top and bottom of the lake.The sequence stratigraphic framework of the Tuchengzi Formation in the western Liaoning JinxiYangtang Basin was established through the division and comparison of the sequence of the cycles, This reveals the evolution of the Jurassic Tuchengzi Formation during Mesozoic sedimentation.