Which boundary type is associated with folded and thrust-faulted mountains?

• A. Collision Zones
• B. Convergent Boundaries
• C. Divergent Boundaries
• D. Subduction Zones

Answer: (A)

Compressional forces at convergent plate boundaries push crust together, causing rocks to buckle into folds and to be stacked along thrust faults. This is especially true when two continents collide, thickening and buckling the crust to form tall mountain belts. Divergent boundaries pull apart and create rift valleys with normal faults, not folded mountains. Subduction zones are a type of convergent boundary where one plate dives beneath another and often produce volcanic activity, but the classic folded, thrust-fault mountain belts come from continental collision at a convergent boundary. So the boundary type associated with folded and thrust-faulted mountains is convergent boundaries, sometimes described as collision zones.