Answer:
Folds.
Step-by-step explanation:
- A fold occurs when an originally flat or a plane surface of sedimentary rocks undergoes a bent or a curve and that may lead to permanent deformation.
- And are formed due to the slumping of the sedimentary materials. They can form under the conditions of the compressional stress, hydrostatic pressure, and temperature gradient.
- A set of folds is distributed at a region scale makes the fold belt and is commonly found in the orogenic zones or the mountain building areas. These folds are of various types as Anticlines, Synclines, and Antiforms.