The theory of Isostasy explains the gravitational equilibrium between different relief features on Earth's surface. This fundamental concept helps us understand why mountains, plateaus, and ocean basins maintain a state of balance despite their varying heights and masses. The study of isostasy is crucial for understanding Earth's crustal structure and dynamics. THEORY OF ISOSTASY Introduction There are different physical features such as mountains, plateaus, and plains on the surface of the Earth which vary greatly in size. Despite this variation, these features are balanced or are in equilibrium. The study of equilibrium or the state of balance between the upstanding part and the low-lying basin is known as the state of Isostasy . The term was first given by "Dutton" to determine the state of gravitational equilibrium between the different relief features on the rotating Earth. According to Dutton, the higher features such as m...