County geological formation exposed by geological era, there are 7 lines (JI), the Sinian, Cambrian, Ordovician, Silurian, Cretaceous, Tertiary, Quaternary.

• 地质县境地层出露按地质年代，有7个系（纪），即震旦系、寒武系、奥陶系、志留系、白垩系、第三系、第四系。