Isostasy 2
Isostasy 2 : A condition of hydrostatic equilibrium with the rigid part of the earth's crust floating on a denser and more mobile sublayer. Thus extensive areas of high topography are underlain by "roots" of relatively low density and the adding or removal of material at the surface causes vertical adjustments to maintain equilibrium. Isostasy is demonstrated in Utah by the subsidence and rebound of the Lake Bonneville basin in response to the adding and removal of the water load of Lake Bonneville
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