The intersecting area of Micang and Daba mountains would have experienced at least two tectonic combinations.One is the superimposition of the nearly EW trend Micang mountain anticline on the NS trend Daba mountain thrust fold belt

resulting in the formation of EW trend superimposed anticlinal fold with the metamorphic basement of Mieang mountain as the core.Another one is the approximately EW trend Tongnanba major structure

affected by the nappe of Daba Mountain structure

the structural trend in the eastern section has been rotated

as a result

it has integrally been reconstructed into a complete NE anticlinal structure.Formation shortening rates of balanced cross sections are calculated from over 10 major sections in the study area.According to variation of formation shortening rate from large to small

strong

medium and weak deformation zones can be divided in the direction from both Micang and Daba mountain fronts to the basin.These deformation zones have interacted and superimposed with each other in Tongnanba region.Analyses of structural deformation intensity and reservoiring conditions show that the imbricated thrust fault zone

Heichiliang

Fuyangba and Nanyangchang in Micang mountain front are the most favorable positive blocks for exploration in the study area.