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Layers that are less dense, such as the crust, float on layers that are denser, such as the mantle. Both oceanic crust and continental crust are less dense than the mantle, but oceanic crust is denser than continental crust.This is partly why the continents are at a higher elevation than the ocean floor.ayers that are less dense, such as the crust, float on layers that are denser, such as the mantle. Both oceanic crust and continental crust are less dense than the mantle, but oceanic crust is denser than continental crust.
Rockhound. No. Although it is less dense, continental crust is much thicker than oceanic crust. Continental crust is thicker, averaging somewhere is the twenty to thirty mile range. Oceanic crust is in the 3-6 mile range on average.