isostatic systems

Isostatic systems refer to Earth's crust adjusting to balance its mass distribution. Think of it like a buoyant object floating in water: parts of the crust "float" at different heights depending on their density and thickness. When material is added or removed, the crust gradually shifts to restore equilibrium, much like a boat sinking or rising as weight changes. This process helps maintain Earth's surface stability over long timescales. In essence, isostatic systems describe how Earth's crust adapts to changes in weight or structural support to stay balanced.