Folds
Compositional or metamorphic layers of rocks may bend during ductile deformation to produce folds. Folds commonly form during regional horizontal shortening in orogenic (mountain building) belts...
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Orientation of Strata
Strata are layers of rock, whether of sedimentary (e.g., sandstone or limestone) or of extrusive igneous (e.g., lava flow) origin. Sedimentary strata are formed when Earth'...
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Folds