In this article we will discuss about:- 1. Objectives of Thermal Contraction Theory 2. Mechanism of the Thermal Contraction Theory 3. Evaluation. Objectives of Thermal Contraction Theory: Jeffreys, a strong exponent of contraction theory, postulated his ‘thermal contraction theory’ to explain the origin and evolution of major reliefs of the earth’s surface (continents, ocean basins, […]