GEOLOGY AND FORMATION MECHANISM OF CONJUGATE SHEAR ZONE IN XIMATA REGION, GUYANG COUNTY, INNER MONGOLIA

The regional geological mapping is used to analyze the fold structure of the Zhaertaishan Group in Guyang County, Inner Mongolia. In the geological evolution of the fold structure, this suite of strata experienced three stages of fold deformation: the intraformational fold in the early stage, the homoclinal reverse fold in the major stage, and the superimposed fold in the late stage. The intraformational fold that occurred in the Meso-Proterozoic and developed in the Agulugou Formation, was caused by the shear-slip between formations. The homoclinal reverse fold occurred in the Meso-Proterozoic. The superimposed fold in the late stage occurred in the Early Paleozoic. The latter two folds were both derived from the longitudinal folding mechanism. The restructuring of the fold in the major stage by the fold in the late stage resulted in the formation of a relatively complex superimposed structural network.