Which mountain range is formed primarily from folded mountains?

The Appalachian Mountains are primarily formed from folded mountains, a result of tectonic plate movements and the collision of landmasses that occurred over millions of years. This geological process causes layers of rock to warp and fold, creating the characteristic ridges and valleys seen in the Appalachians.

The formation of the Appalachian Mountains is closely tied to significant geological events, particularly the collision of the North American Plate with the African Plate during the formation of Pangaea. This resulted in extensive folding and uplifting of the sedimentary rock layers that were deposited in ancient seas.

In contrast, other mountain ranges such as the Rocky Mountains and the Sierra Nevada are primarily associated with block faulting and volcanic activity, respectively. The Himalayas also result from tectonic plate collisions but are characterized more by thrust faulting due to the intense pressures from the ongoing interaction between the Indian Plate and the Eurasian Plate. Thus, the unique folding processes that shaped the Appalachian Mountains distinguish them from these other ranges.