Rocks to the north and south of the gneiss zone are lithologically and structurally distinct from it . 片麻岩带南北两侧的岩石，在岩性上及构造上都和它大不相同。
2.
According to rock and mineral analysis , the formation consists dominantly of detrital feldspathic fine - sandstone with medium and silt sandstone secondly . lithologically , the content quartz is lower than those of feldspar and detritus , and the cement is dominated by clay , which gives the feature of low compositional maturity and low textural maturity 馆上段储层岩性以岩屑质长石细砂岩为主，其次为中细砂岩和粉砂岩，岩石中石英含量低，而长石、岩屑含量高，胶结物以泥质为主，表现出低成分成熟度和低结构成熟度的特点。
3.
Lithologically different rock sheets intertexturally superimposed with faults and folds of various styles . while , the southern belt is chiefly of devonian tuff , tuffaceous schist , marble relatively stable in strata and manifested by regional asymmetric fold easi - westward in axis , with well developed superimposed overthrust south - northward which controlled the whole structural framework in this area 南带以泥盆系凝灰岩、凝灰质片岩、大理岩为主，地层相对稳定，表现为轴向东西的区域性不对称褶皱，广泛分布控制全区构造格局的南北向逆冲推覆的叠瓦式断裂。
