Which geological feature is formed when two tectonic plates collide and buckle upward?

Which geological feature is formed when two tectonic plates collide and buckle upward?

• A. Shield volcano
• B. Rift valley
• C. Fold mountains
• D. Plateau

Answer: (C)

When two tectonic plates collide, the stress is compressive. The rocks at the boundary are squeezed and forced to buckle and crumple upward, creating mountain ranges known as fold mountains. This uplifting and folding happen most clearly where continental plates collide, or where one plate is forced beneath another in a collision zone, leading to the dramatic, folded rock layers that form mountains like the Himalayas and the Alps. This is the hallmark of compression at convergent boundaries, producing height and structure through deformation rather than through volcanic eruption. Shield volcanoes form from magma that erupts at hotspots or divergent boundaries with low-viscosity lava, not from collision and buckling. Rift valleys arise from tectonicextension as plates pull apart. Plateaus are large elevated flat regions that develop from extensive lava flows or broad, long-term uplift, not the compression and folding associated with collision.

When two tectonic plates collide, the stress is compressive. The rocks at the boundary are squeezed and forced to buckle and crumple upward, creating mountain ranges known as fold mountains. This uplifting and folding happen most clearly where continental plates collide, or where one plate is forced beneath another in a collision zone, leading to the dramatic, folded rock layers that form mountains like the Himalayas and the Alps. This is the hallmark of compression at convergent boundaries, producing height and structure through deformation rather than through volcanic eruption.

Shield volcanoes form from magma that erupts at hotspots or divergent boundaries with low-viscosity lava, not from collision and buckling. Rift valleys arise from tectonicextension as plates pull apart. Plateaus are large elevated flat regions that develop from extensive lava flows or broad, long-term uplift, not the compression and folding associated with collision.