The Appalachian Mountains are part of The Appalachian orogenic belt.

This geological formation extends across the eastern United States and into Canada, comprising a series of mountain ranges and plateaus. The Appalachian orogenic belt is the result of complex geological processes, including plate tectonics, continental collision, and erosion over millions of years. It encompasses various sub-ranges, such as the Blue Ridge, Great Smoky Mountains, and the Allegheny Plateau, contributing to the region's diverse landscapes and ecosystems. This belt plays a crucial role in the geology and ecology of eastern North America.