When a continent is involved in a collision at a convergent plate boundary,it cannot subduct because its huge volume of low-density,high-buoyancy rocks cannot sink to great depth and cannot be pulled into the denser mantle rocks below.

Question

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When a continent collides with another plate at a convergent boundary, it forms a mountain range rather than subducting because the continental crust is too buoyant to be pulled into the denser mantle rocks. This process is known as continental collision.

When a Continent Is Involved in a Collision at a Convergent