Abstract:

Qinling orogenic belt is a famous orogenic belt in central China, and it is also a typical intra continental orogenic belt of continental tectonics. This type of orogenic belt did not undergo subduction of ocean crust to form such orogenic belt with main suture zone. It is not the collision orogenic belt that formed by the interaction between North China plate and Yangtz plate, and also not socalled composite orogenic belt. According to the composition, structural characteristics of different depth, crossbridge structure, structural style in the transformation of basin and mountain, the structural characteristics of Shangxian Danfeng tectonic zone and Mianxian Lueyang tectonic zone as well as the distinct north south direction structures in the central orogenic system (Qinling), the non plate features of these characteristics are discussed. On the basis of above discussion, the thrust Choula(or Choula) tectonic model for the formation of Qinling intra continental orogenic belt is built.

Key words: intra continental orogenic belt, characteristics, basin mountain transformation, cross bridge structure, north south and west east direction structure, Choula (drawing out) structure, Qinling in China