Abstract: To overcome the limited accuracy of automated cross-section generation for Quaternary overburden, which is often compromised by complex stratigraphic features like interfingering sedimentary facies and lenticular bodies, this paper proposes an automated processing algorithm based on the concept of stratal continuity. This algorithm aims to unify complex stratigraphic sequences and facilitate the intelligent delineation of geological cross-sections. Leveraging the principle of strata correlation, our approach unifies complex stratigraphic sequences through systematic lenticular body identification, aggregation, and embedding (validated experimentally), and a hierarchical coding scheme. The algorithm effectively handles strata pinch-outs, hierarchical connections, and basal terminations. Tested on data from Beijing's Zhongguancun Science and Technology Park, the method demonstrates high accuracy and robustness, substantially improving the precision and consistency of stratigraphic spatial inference for engineering geological exploration and modeling applications.