The bending of originally flat rock layers into wave-like arches and troughs under compressive tectonic stress, without the rock breaking. Folding on scales from centimetres to hundreds of kilometres shapes mountain belts worldwide and is often visible in road cuts and cliff faces as sharply curved sedimentary layers.
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1. Fold (geology) (Wikipedia)
Wikipedia infobox 'Lead section' = 'In structural geology, a fold is a stack of originally planar surfa...' on 'Fold (geology)'View the Source 2. Orogeny (Wikipedia)
Wikimedia FoundationMountain building sectionQuote, Mountain building section
The compressive forces produced by plate convergence result in pervasive deformation of the crust of the continental margin (thrust tectonics). This takes the form of folding of the ductile deeper crust and thrust faulting in the upper brittle crust.
Fold (geology) - Wikipedia
IntroductionQuote, Introduction
a fold is a stack of originally planar surfaces, such as sedimentary strata, that are bent or curved ("folded") during permanent deformation
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