Denali National Park in Denali Borough, Alaska — The American West (Northwest)
Mountains in Motion / Hot Rocks
Mountains in Motion
Though the visible glaciers appear remote - gleaming between distant peaks - the valley below is strewn with signs of masses glaciation: stranded boulders, gouged-out ponds, and gravel outwash plains. The last big glacial advance plowed through this valley about 10,000 years ago. To a geologistís eye, the landscape is still active with glaciers. Denaliís wandering meltwater rivers, cloudy with glacial silt and rock fragments, are evidence of ongoing glaciation and mountain carving.
The many-colored (polychrome) rocks are hardened lava, from a period of mountain building 100 million years ago. That timeframe seems unimaginably distant - yet this area is experiencing continued seismic activity. Earthquake tremors are frequent. As the crustal plates along the Denali fault keep grinding together, mountains of the Alaskan range may still be rising.
Location. 63° 32.135′ N, 149° 49.72′ W. Marker is in Denali National Park, Alaska, in Denali Borough. Touch for map. Located at a rest stop along the Park Road in the Denali Nation Park, Park Road is closed to private vehicles. To reach this marker you can take one of the parks busses or an authorized tour bus, or hike in. See the Denali
Also see . . .
1. Denali Nation Park. “Denali is six million acres of wild land, bisected by one ribbon of road. Travelers along it see the relatively low-elevation taiga forest give way to high alpine tundra and snowy mountains, culminating in North America's tallest peak, 20,320' Mount McKinley. Wild animals large and small roam unfenced lands, living as they have for ages. Solitude, tranquility and wilderness await." Source NPS web site (Submitted on October 27, 2013, by Byron Hooks of Sandy Springs, Georgia.)
2. Denali National Park and Preserve: Geologic Resources Inventory Report. (Submitted on October 29, 2013.)
Categories. • Science & Medicine •
Credits. This page was last revised on June 16, 2016. This page originally submitted on October 27, 2013, by Byron Hooks of Sandy Springs, Georgia. This page has been viewed 337 times since then and 15 times this year. Last updated on January 19, 2014, by Byron Hooks of Sandy Springs, Georgia. Photos: 1, 2, 3, 4. submitted on October 27, 2013, by Byron Hooks of Sandy Springs, Georgia. • Syd Whittle was the editor who published this page.