1. Contraction Theory
During the earth’s formation surface rocks cooled faster and wrinkled to form Fold Mountains.
2. Convectional Currents Theory
- Horizontal convectional currents in the mantle exerted frictional pull on crustal rocks.
- Continental crusts were pulled towards each other.
- Sediments between them were squeezed into folds.
3. Continental Drift Theory
- During break of Gondwanaland India drifted northwards and collided with Eurasia.
- Sediments between were squeezed to form fold mountains e.g. Himalayas and Everest.
4. Plate Tectonics Theory
- When an oceanic plate meets another or it meets a continental plate the sediments under the sea are compressed to form Fold Mountains.
- When two continental plates meet the sial layer is compressed to form fold mountains
-E.g. Alps was formed when Africa plate pushed against the rigid European plate.
lydiajane74 answered the question on November 24, 2017 at 12:34
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