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Question: calculate a density and b crustal thickness beneath a 5...

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Calculate (a) density and (b) crustal thickness beneath a 5 km high mountain chain in isostatic equilibrium with a 35 km thick continental crust of density 2800 kg/m3 using hypotheses of (a) Pratt and (b) Airy. In the latter case assume mantle density of 3300 kg/m3 A mountain range is 4 km high and is in isostatic equilibrium. How much material has to be eroded from the top to bring the surface down to the sea level? Assume Airy-type isostasy, equilibrium crustal thickness at sea level, and densities as above.

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