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华北寒武系包括两大套岩系，即辛集组至徐庄组以碎屑岩与碳酸盐岩交互沉积为特征的岩系，代表碳酸盐台地的发展阶段；张夏组至上寒武统的碳酸盐岩系，代表台地的成熟阶段，其中张夏组代表平顶型台地发育阶段，晚寒武世地层形成缓坡型台地的发育阶段。在岩性、岩相、相序研究的基础上，在寒武纪地层中识别出８个三级层序，它们在碳酸盐台地不同的发育阶段，具有不同的相序特征，以及由不同的相序组构代表的、不同的地层堆积作用特点。
The Cambrian Department of North China consists of two major series of rock series, ie, the Xinji Formation to Xuzhuang Formation are characterized by the interaction between clastic rocks and carbonate rocks, representing the development stage of the carbonate platform. The Zhangxia Formation to Upper Cambrian The carbonate system represents the mature stage of the platform, in which the Zhangxia Formation represents the development stage of the flat top platform and the Late Cambrian strata form the development stage of the gentle slope platform. On the basis of lithology, lithofacies and phase sequence studies, 8 third-order sequences were identified in the Cambrian strata. They have different phase sequence features at different developmental stages of the carbonate platform, The phase sequence structure represents the different characteristics of the formation accumulation.