The varied types of reliefs on the planet are the result of a series of modeling agents that can be internal or external. In the case of folds and faults, they are internal or endogenous agents, originating from movements occurring in the lithospheric plates.
Folds, also called folding, are created from gigantic pressures that occur horizontally, exerting a great force on rocks with more fragile compositions, such as sedimentary ones, this phenomenon causes the relief to wrinkle. We have several examples in the world of mountain ranges that emerged as a result of folding and folding, of which we can mention: the Himalayan mountain range, in Asia; the Alps, in Europe, and the Andes mountain range, in South America.
The drawing above shows how the folds form.
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Faults, or faults, are formed from movements caused by enormous pressures that occur vertically and horizontally, exerting a great force on more solid and rigid rocks, such as crystalline rocks, for example. During the phenomenon, ruptures or cracks form in the extensions of the rocks. This causes sliding between the rocks. Such movements are responsible for the emergence of cliffs and valleys. Faults can also appear in places where lithospheric plates meet.
How faults or faults can form
By Eduardo de Freitas
Graduated in Geography