Rock folds typically form under the influence of compressive stress.

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Rock folds are a type of structural deformation that occurs in rocks under the influence of compressive stress. This stress can come from tectonic activity, such as the collision of two plates, or from other geological processes. Folds can take many different forms, from simple anticlines and synclines to more complex structures like domes and basins, and they can provide important clues to the geological history of an area.

Rock Folds Typically Form Under the Influence of Compressive Stress