Fold mountains are formed from sedimentary rocks that accumulate along the margins of continents, when two tectonic plates move together. When the plates and the continents riding on them collide, the accumulation layers of rock may crumple and fold, particularly if there is a mechanically weak layer such as salt. These accumulated layer or sediments are then pushed together by volcanic islands to form folds, which eventually form fold mountains. Mostly, in the interaction between oceanic plate and continental plate, oceanic plate gets subducted beneath the margins of continental plates, giving rise to mighty mountains. This activity can occur only on the margins of continents, as a result of which fold mountains are observed along the margins of continents. Fold mountains are distributed throughout the world in the eastern margins of Mediterranean to Western Pacific, West Coast of South America and Appalachians Mountains of North America. The earth quakes in these regions o...
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