Geography, asked by varshaditya, 9 months ago

Volcanic activity is common in areas around marine trenches

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Answered by virat293

Answer:

At oceanic ridges most of the crustal movement is near the surface as sea-floor spreading causes plates to move apart and new crust is formed by magma pushing up from the mantle. ... Earthquakes that are deep in the crust are found in the same areas as the deep-sea trenches.

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