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安徽南部位于郯-庐断裂带以南。从下寒武系至下三叠统,没有发现典型的地槽复理石和海相火山岩,以及地层间的区域性不整合面接触,一直认为是比较稳定的古生代准地台区。但其中生代历史则迥然不同,巨厚的陆相及海陆交互相沉积,地层间出现区域性不整合接触,强烈的褶皱变形、断裂和岩浆活动,以及同褶皱期侵入岩体与推覆构造等。这种异乎寻常的构造作用,即是大陆板块内部的变形运动,朱夏称板内变格。
The southern part of Anhui is located south of the Tie-Lu fault zone. From the Lower Cambrian to the Lower Triassic, typical trough-free marbles and marine volcanic rocks, as well as regional unconformity surface contact between strata, have been found to be relatively stable Paleozoic quasi-platform areas. However, the Mesozoic history is quite different. The thick continental facies and sea-land facies sedimentary facies, regional unconformity contact, strong fold deformation, fault and magmatic activity, and intrusive rock mass and nappe structure Wait. This unusual tectonic effect, that is, the deformation of the continental plate movement, Zhu said the board within the grid.