Dome Mountains are formed when a hot layer of molten magma pushes up the surface of the Earth but doesn’t crack through it. Slowly, the magma cools down and hardens into rocks. These mountains are not so high as folded mountains. Domes are flat, dissected surfaces which are sloping gradually towards the surrounding basins. The diameter of the base of a Dome Mountain ranges up to hundreds of kilometres. The Black Hills of South Dakota are the examples of larger domes and the Henry Mountains of Utah are the examples of small domes.
Dome Mountains
