Analysis of Sequence Stratigraphy of Late Paleozoic in the Southern Fringe of the Erdos Basin

On the basis of the methods and theory of the sequence stratigraphy, and having summarized and analyzed the data of cores and logging, the paper has conducted the sequence division of the strata of the Late Paleozoic in the southern fringe of the Erdos Basin. Five sequences of third rank have been distinguished in Taiyuan and Shanxi formations in the study area. In the three sequences of the epicontinental basin, each sequence is composed of the transgressive systems tracts and the highstand systems tracts, and the lowstand systems are missing. While in the filling sequences dominated by the river-delta, the lowstand systems tracts, the water-transgressive systems tracts, and the highstand systems tracts have been divided.