The topography of the Valley and Ridge province in the Appalachian Mountains is controlled by

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The Valley and Ridge province of the Appalachian Mountains is characterized by its distinctive topography of elongated ridges and valleys, which is primarily the result of sedimentary rocks that have been deformed into anticlines (upward-arching folds) and synclines (downward-arching folds). This folding occurred during the Appalachian orogeny, a series of mountain-building events that took place from the late Ordovician to the Permian period.

The Topography of the Valley and Ridge Province in the Appalachian