What principle best explains why continental crust is much older (around 4 billi

Question

What principle best explains why continental crust is much older (around 4 billion years) compared to oceanic crust (200 million years)? State and explain the concept. What principle best explains why continental crust is much older (around 4 billion years) compared to oceanic crust (200 million years)? State and explain the concept. What principle best explains why continental crust is much older (around 4 billion years) compared to oceanic crust (200 million years)? State and explain the concept.

Explanation / Answer

Here mainly density and thickness of crust is the principal to determines and explains the of age crust. Continental crust has less density and high thick crust than oceanic crust so the continental crust more buoyancy on mantle and it can control heat from inside the earth and less volcanic eruption than oceanic crust but oceanic crust is thinner and has high density than the continental crust so in this oceanic crust seismically active and convection currents reaches frequently to oceanic crust then the tectonic movements causes Mid oceanic ridges and these creates new crust on oceanic crust more frequently.

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