Wanderlust World Wanderlust World The Appalachians and Rockies are North America’s two great mountain systems, but they differ profoundly in age, structure, climate, and ecology.
| Feature | Appalachian Mountains | Rocky Mountains |
|---|---|---|
| Location | Eastern North America: Canada (Newfoundland) to Alabama (USA) | Western North America: Canada (BC) to New Mexico (USA), into Mexico |
| Age | ~480–300 Ma (Paleozoic); heavily eroded, ancient | ~80–55 Ma (Laramide orogeny); younger, still uplifting |
| Highest Peak | Mount Mitchell, NC: 2,037 m (6,684 ft) | Mount Elbert, CO: 4,401 m (14,440 ft) |
| Topography | Rounded, forested ridges; low relief; dissected plateau | Jagged, high peaks; deep valleys; alpine tundra, glaciers |
| Geology | Folded sedimentary/metamorphic rocks (quartzite, shale, limestone) | Uplifted blocks, volcanic, granitic cores; fault-block ranges |
| Climate | Temperate, humid; four seasons; dense deciduous/coniferous forest | Continental, semi-arid to alpine; high UV; large diurnal swings |
| Vegetation | Mixed hardwoods (oak, hickory, maple), spruce-fir at high elevations | Ponderosa pine, lodgepole, aspen, spruce-fir, alpine tundra |
| Wildlife | Black bear, white-tailed deer, wild turkey, salamander diversity | Grizzly bear, elk, moose, bighorn sheep, mountain goat, pika |
| Human History | Early barrier to westward expansion; coal, timber, tourism | Mining (gold, silver, copper), ranching, skiing, parks |
The Appalachians are old, worn, and biologically rich; the Rockies are young, high, and dramatically sculpted. Both are biodiversity hotspots and cultural icons.