Craton is referred to as a large immobile block of earth crust composed of ancient crystalline basement rock and have deep lithosphere roots that extends deeply into the earth's mantle.
Cratons are often seen as shields because the basement rock crops out at the surface, and in platforms, the basement is overlaid by sedimentary rock.
Geographically, a shield and a surrounding platform together are synonymous with craton.
The sea can act as a temperature regulator because it takes in heat energy in the summer but the land can’t do that (the suns rays are mostly reflected) so temperature isn’t kept as constant
