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Cascade Range,mountain chain, c.700 mi (1,130 km) long, extending S from British Columbia to N Calif., where it becomes the Sierra NevadaSierra Nevada
, mountain range, c.400 mi (640 km) long and from c.40 to 80 mi (60–130 km) wide, mostly in E Calif. It rises to 14,495 ft (4,418 m) in Mt. Whitney, the highest peak in the United States outside Alaska.
..... Click the link for more information. ; it parallels the Coast RangesCoast Ranges,
series of mountain ranges along the Pacific coast of North America, extending from SE Alaska to Baja California; from 2,000 to 20,000 ft (610–6,100 m) high. The ranges include the St. Elias Mts.
..... Click the link for more information. , 100–150 mi (161–241 km) inland from the Pacific Ocean. Many of the range's highest peaks are volcanic cones, covered with snowfields and glaciers. Mt. St. HelensSaint Helens, Mount,
volcanic peak, 8,363 ft (2,549 m; 9,677 ft/2,950 m before its 1980 eruption) high, SW Wash., historically the most active volcano in the Cascade Range. Dormant since 1857, Mt. St.
..... Click the link for more information. erupted in 1980 in one of the greatest volcanic explosions in U.S. history, and Lassen Peak, 10,457 ft (3,187 m) high, in Lassen Volcanic National ParkLassen Volcanic National Park,
106,372 acres (43,081 hectares), N Calif., at the southern end of the Cascade Range. Proclaimed as Lassen Peak and Cinder Cone national monuments in 1907, the two were incorporated into a new national park in 1916.
..... Click the link for more information. , is still active. Mt. Rainier (14,410 ft/4,392 m), in Mount Rainier National ParkMount Rainier National Park
, 235,625 acres (95,395 hectares), SW Wash., in the Cascade Range; est. 1899. The area is dominated by Mt. Rainier, a volcanic peak 14,410 ft (4,392 m) high.
..... Click the link for more information. , is the highest point in the Cascades; Mt. ShastaShasta, Mount
, volcanic peak, 14,162 ft (4,317 m) high, N Calif., in the Cascade Range. Visited c.1827 by Peter Skene Ogden, a British fur trader and explorer, Mt. Shasta has long been extinct except for hot sulfurous springs near the top. The resort town of Mt.
..... Click the link for more information. and Mt. HoodHood, Mount,
peak, 11,235 ft (3,424 m) high, NW Oreg., in the Cascade Range, E of Portland; highest point in the state and the center of Mt. Hood National Forest. A symmetrical, dormant volcano with glaciers and forested lower slopes, it is a favorite mountain-climbing and
..... Click the link for more information. are other prominent peaks. The Columbia River flows from east to west across the range. Of the many lakes in the Cascades, Crater Lake, in Crater Lake National ParkCrater Lake National Park,
183,224 acres (74,206 hectares), SW Oreg., in the Cascade Range; est. 1902. Crater Lake, 20 sq mi (52 sq km), lies in a huge pit that was created when the top of a prehistoric volcano was blown off by a violent eruption.
..... Click the link for more information. , and Lake ChelanChelan, Lake
, 55 mi (89 km) long and from 1 to 2 mi (1.6–3.2 km) wide, located in a deep narrow gorge in the Cascade Range, NW Wash.; third-deepest freshwater lake in the United States.
..... Click the link for more information. , in Lake Chelan National Recreation Area, are the most famous. Other federal lands in this popular recreation area are North Cascades National ParkNorth Cascades National Park,
504,781 acres (204,436 hectares), N Washington. Located in the Cascade Range, the park has outstanding alpine scenery, including high jagged peaks, glaciers, icefalls, hanging valleys, and mountain lakes in high glacial cirques.
..... Click the link for more information. , Ross Lake National Recreation Area, and Cascade-Siskiyou and Lava Beds national monuments; national forests cover an extensive area.
Receiving more than 100 in. (254 cm) of precipitation annually, much of it as snow, the Cascades are a major source of water in the NW United States. Hydroelectricity is generated on the western slope; irrigation is used in the fertile eastern side valleys. Timber is the region's chief resource, but a growing concern for ecology and the environment has developed into a major political debate surrounding the trees. The Cascade Tunnel, 8 mi (12.9 km), is one of the longest railroad tunnels in North America.
a mountain range of the North American Cordillerra, located in the USA and Canada. Length, about 1,000 km; maximum altitude, 4, 392 m (Mount Rainier, a volcano).
The Cascade Range gets its name from the abundance of terrace-like waterfalls (cascades) on the Columbia, Fraser, Klamath, and other rivers that cut through the range. The range is formed by Mesozoic crystalline rocks covered by huge layers of Paleogene and Neocene lavas. Above this strongly dissected volcanic plateau, which is from 1, 800 to 2, 500 m high, rise isolated cones of volcanoes, such as Mount Baker, Mount Rainier, Mount Hood, and Lassen Peak, with altitudes of 3, 000 to 4, 000 m and more. Most of the volcanoes are extinct, although their slopes abound in fumaroles and hot springs. In the late 19th and early 20th centuries Mount Rainier and Lassen Peak showed their greatest volcanic activity. The volcanic peaks are covered with vast snow fields and glaciers. Dark coniferous forests grow on the humid western slopes of the range and pine trees on the dry eastern slopes; above 2, 800–3, 000 m, the forests give way to subalpine and alpine meadows. There are copper and gold deposits in the mountains. Crater Lake, Mount Rainier, and Lassen Volcanic national parks are located in the Cascade Range.
A. V. ANTIPOVA