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What is the best estimate of the densities of the various layers of the Earth?

Estimates vary, but some approximate values should be as follows (in grams per cubic centimeter):

Continental Crust:    2.7 to 3.0
Oceanic Crust:        3.0 to 3.3
Mantle (silicates):   3.3 to 5.7 (increasing with depth?)
Outer Core (liquid):  9.9 to 12.2
Inner Core (solid):  12.6 to 13.0

Thanks for the question.

 

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