What type of stresses have the rocks undergone to form the structures?

The rocks have typically undergone various types of stresses, including compressional, tensional, and shear stresses. Compressional stress can lead to folding and thrust faulting, while tensional stress often results in normal faulting and crustal extension. Shear stress can cause rocks to deform laterally, leading to strike-slip faults. These stresses are fundamental in shaping geological structures such as mountains, valleys, and fault lines.