The asthenosphere produces a buoyant force on the crust that pushes it upward. The crust stops rising when the buoyant force and gravitational force are balanced. This is when isostatic equilibrium is reached.
<h2><u>Relation between buoyancy, isostatic equilibrium, and epeirogenic processes</u></h2>
Buoyant force or buoyancy, is the forceexerted in an object which is fully or partially occupied in a fluid. Isostatic equilibrium is the gravitational equilibrium between earth's crust and underlying mantle. while epeirogenic process is the depression of land having longwavelengths.
Both epeirogenic process and isostatic equilibrium uses the principle of buoyancy. The crust of the Earth or the lithosphere floats over underlying mantle at an elevation depending upon its density and thickness.
