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What happens to the plates at convergent plate boundaries?

Question

What happens to the plates at convergent plate boundaries?

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Solution

At convergent plate boundaries, two tectonic plates move towards each other. This movement can result in several different interactions, depending on the nature of the plates involved:

  1. Oceanic-Continental Convergence: When an oceanic plate converges with a continental plate, the denser oceanic plate is forced under the lighter continental plate in a process known as subduction. This can lead to the formation of deep ocean trenches and volcanic activity on the continental plate.

  2. Oceanic-Oceanic Convergence: When two oceanic plates converge, the older, denser plate is typically subducted under the younger, less dense plate. This can result in the formation of volcanic island arcs.

  3. Continental-Continental Convergence: When two continental plates converge, neither plate is subducted because they have similar densities. Instead, the crust tends to buckle and be pushed upwards or sideways, forming mountain ranges.

In all cases, convergent plate boundaries are associated with intense geological activity, including earthquakes, volcanic eruptions, and the creation of mountain ranges and deep-sea trenches.

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