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Type of CrustAverage ThicknessAverage AgeMajor ComponentContinental Crust 20-80 kilometers3 billion yearsGranite Oceanic Crust 10 kilometersGenerally 70 to 100 million years oldBasalt.
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Type of CrustAverage ThicknessAverage AgeMajor ComponentContinental Crust20-80 kilometers3 billion yearsGraniteOceanic Crust10 kilometersGenerally 70 to 100 million years oldBasalt