The vertical distribution of deformations corresponds to the notion of structural level (Courtyard icon figure). In the theoretical section of a mountain range, faults appear in the upper structural level, deformation is concentrated along discontinuities. In response to the constraints, the bark has a rather brittle behavior. In depth, the faults gradually disappear, the deformation is then continuous or ductile. It is first expressed by folds in the middle structural level, then by a flattening of the rock which acquires a planar structuration: the schistosity and foliation that characterize the lower structural level.
- Enseignant: Nabila HAMMAD