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Yaila Mountains

(Encyclopedia)Yaila Mountains: see Crimea.

Bighorn Mountains

(Encyclopedia)Bighorn Mountains, range of the Rocky Mts., N central Wyo., extending c.120 mi (190 km) N into S Montana, E of the Bighorn River. Cloud Peak, 13,165 ft (4,013 m), is the highest point. The glaciated m...

Zhiguli Mountains

(Encyclopedia)Zhiguli Mountains zhēgo͞olyēˈ [key], wooded range, E European Russia, in the Samara bend of the Volga River at Samara. They rise to c.2,220 ft (680 m) and are rich in oil, which is piped to Samara...

Rocky Mountains

(Encyclopedia)Rocky Mountains, major mountain system of W North America and easternmost belt of the North American cordillera, extending more than 3,000 mi (4,800 km) from central N.Mex. to NW Alaska; Mt. Elbert (1...

Sayan Mountains

(Encyclopedia)Sayan Mountains säyänˈ [key], central Asia, chiefly in S Siberia. The Eastern Sayan Mts. extend c.680 mi (1,090 km) from the lower Yenisei River to the southwest end of Lake Baykal and rise to 11,6...

Selkirk Mountains

(Encyclopedia)Selkirk Mountains, rugged range of the Rocky Mts., SE British Columbia, Canada, near the Alta. border and extending northwest c.200 mi (320 km) from the U.S. border. Mt. Sir Sanford (11,590 ft/3,533 m...

Stikine Mountains

(Encyclopedia)Stikine Mountains, range of the Rocky Mts., NW British Columbia, Canada, extending c.250 mi (400 km) northwest-southeast and rising to 8,200 ft (2,500 m) in Mt. Witt. The Stikine, Skeena, and Finlay r...

Cumberland Plateau

(Encyclopedia)Cumberland Plateau or Cumberland Mountains, southwestern division of the Appalachian Mt. system, extending northeast to southwest through parts of West Virginia, Virginia, Kentucky, and Tennessee into...

Blue Ridge

(Encyclopedia)Blue Ridge, eastern range of the Appalachian Mts., extending south from S Pa. to N Ga.; highest mountains in the E United States. Mt. Mitchell, 6,684 ft (2,037 m) high, is the tallest peak. Beginning ...

Silurian period

(Encyclopedia)Silurian period sĭlo͝orˈēən, sī– [key] [from the Silures, ancient tribe of S Wales, where the period was first studied; named by the British geologist R. I. Murchison], third period of the Pal...