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Definition of Fold (geology)

Fold (geology) Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
A geological fold occurs when one or a stack of originally flat and planar surfaces, such as sedimentary strata, are bent or curved as a result of permanent deformation. folds are those due to slumping of sedimentary material before it is lithified. Folds in rocks vary in size from microscopic crinkles to mountain-sized folds. They occur singly as isolated folds and in extensive fold trains of different sizes, on a variety of scales.

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