Through 1∶50 000 regional geological survey in Zhenba-Gaochuan area, there were two distinctly types of Permian strata with different rock association and fossils. Based on the regional data, the regional tectonic significances of the Permian strata were discussed. The difference of lithofacies characteristic of the Permian strata indicated that Zhenba and Gaochuan areas located in absolutely different sedimentary-tectonic environment. In general, the similarity of the stratigraphic systems in Gaochuan area and Mianlue tectonic belt showed that the two stratigraphic systems had the similar tectonic evolution history. The
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