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铁岭凡河地区元古宙地层始于凡河元古宙坳拉谷沉积，根据岩石地层学、生物地层学、年代地层学等研究成果，结合现代层序地层学理论，自下而上划分六个层序，即关门山层序，虎头岭层序、二道沟层序、石门层序、杨士屯层序、于北沟层序。每个层序仅由海侵体系域和高水位体系域组成，分别代表海侵退积地层结构和海退进积地层结构，而中间饥饿段则以加积为主。各层序间均为不整合，其类型包括海岸暴露带和海侵面。在此基础上，建立了区域地层格架。
The Proterozoic strata in the Van River area of Tieling began with the deposition of the Aura Valley in the Proterozoic of the Van River. According to the research results of lithostratigraphy, bio-stratigraphy and chronostratigraphy, combined with the theory of modern sequence stratigraphy, The sequences are the Kamenshan sequence, the Huotouling sequence, the Erdaogou sequence, the Shihmen sequence, the Yangshitun sequence and the Yubeigou sequence. Each sequence consists of the transgressive system tract and the highstand system tract, which represent the stratigraphic structure of the transgression and regression and the stratigraphic structure of the receding strata, respectively, while the intermediate starvation segment is dominated by the accretion. The strata are not integrated between the various types, including the coastal exposure zone and the sea surface. On this basis, a regional stratigraphic framework was established.