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Alaska Range
The Alaska Range is a relatively narrow, 400 mile long (650 km) mountain range in the south central region of the U.S. state of Alaska. It extends from Lake Clark at its southwest end to the White River in the Yukon Territory in the southeast and is considered part of the American Cordillera.
The highest mountain in North America, Denali (previously known as Mount McKinley) at 20,310 feet (6190.5 m) is in the Alaska Range.
Kuskokwim Mountains
The Kuskokwim Mountains is a range of mountains in the Yukon-Koyukuk Census Area, Alaska, United States, west of the Alaska Range and southeast of the Yukon River. The Kuskokwim Mountains begin in the interior west of Fairbanks. The mountain range extend from Canyon Creek and Chikuminuk Lake in the southwest over a distance of about 250 milse (400 km) long to the Tanana River in the northeast and reach a width of up to 50 miles (80 km).
The southeast flank of the Kuskokwim Mountains borders the rivers Kantishna, Kuskokwim, Holitna and Kogrukluk. In the northwest lie the Kaiyuh, Russian and Kilbuck Mountains as well as the rivers Innoko, Dishna and Iditarod.
The range takes its name from the Kuskokwim River, which flows through the mountains. Other rivers in the area are the Aniak and Nowitna rivers.
Reported and defined in 1898 by Josiah Edward Spurr of the USGS, at which time he applied the name Tanana Hills to the low mountains at the northeast end of what are now the Kuskokwim Mountains.
Talkeetna Mountains
The Talkeetna Mountains are a mountain range in Alaska. The Matanuska and Susitna River valleys, with towns such as Trapper Creek, Talkeetna, Wasilla, Palmer, Sutton, and Chickaloon, roughly bound the Talkeetnas in the westerly parts of the range.
Sovereign Mountain rises to 8,849 feet (2,697 m) in the remote and heavily glaciated central part of the range. The east side of the range fronts a broad, about 100 miles (160 km) wide, lake-studded lowland of forests and swamps, across which rises the gigantic Mount Wrangell volcanic edifice, at 14,163 feet (4,317 m).
Alaska Highway 4 runs northward through this lowland. Hundreds of miles to the west Alaska Highway 3 runs along the western side of the Talkeetna range, with the Alaska Range directly west.
Alaska Highway 1, running along the southern front of the Talkeetna Mountains, lies mainly in a valley marking a tectonic divide between the Jurassic and Cretaceous rocks of the accretionary wedge, island-arc, and basement rocks in the Peninsular terrane (and other terranes forming the Talkeetna Mountains), and the Chugach Mountains in the Chugach terrane to the south. The range stretches as much as a hundred miles north to south.
Alaska Highway 8, seasonal and unpaved, passes over highlands rising to above 4,000 feet (1,200 m), north of the Talkeetnas.
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