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Winnipeg, Lake

(Encyclopedia) Winnipeg, Lake, third largest lake of Canada, 9,465 sq mi (24,514 sq km), 264 mi (425 km) long and from 25 to 68 mi (40–109 km) wide, S central Man., Canada, N of Winnipeg. It is a…

Ruwenzori

(Encyclopedia) RuwenzoriRuwenzorir&oomacr;ˌwənzōˈrē [key], mountain range, E central Africa, on the Uganda-Congo border, in the western arm of the Great Rift Valley between lakes Albert and…

pothole

(Encyclopedia) pothole, in geology, cylindrical pit formed in the rocky channel of a turbulent stream. It is formed and enlarged by the abrading action of pebbles and cobbles that are carried by…

Kenai Peninsula

(Encyclopedia) Kenai PeninsulaKenai Peninsulakēˈnī [key], S Alaska, jutting c.150 mi (240 km) into the Gulf of Alaska, between Prince William Sound and Cook Inlet. The Kenai Mts., c.7,000 ft (2,130 m…

North Cascades National Park

(Encyclopedia) North 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,…

Holocene epoch

(Encyclopedia) Holocene epochHolocene epochhŏlˈəsēn [key] or Recent epoch, most recent of all subdivisions of geologic time, ranging from the present back to the time (c.11,000 years ago) of almost…

Apurímac

(Encyclopedia) ApurímacApurímacap&oomacr;rēˈmäk [key], river, c.430 mi (690 km) long, rising in the Andes, S Peru. It flows generally northwest in a narrow valley. After joining the Mantaro River…

Columbia Plateau

(Encyclopedia) Columbia Plateau, physiographic region of North America, c.100,000 sq mi (259,000 sq km), NW United States, between the Rocky Mts. and the Cascade Range in Washington, Oregon, and…

Kerguelen

(Encyclopedia) KerguelenKerguelenkûrˈgəlĕn, Fr. kĕrgālĕnˈ [key], subantarctic island of volcanic origin, 1,318 sq mi (3,414 sq km), in the S Indian Ocean, c.3,300 mi (5,310 km) SE of the southern tip…

Chamberlin, Thomas Chrowder

(Encyclopedia) Chamberlin, Thomas Chrowder, 1843–1928, American geologist, b. Mattoon, Ill., grad. Beloit College, 1866. He was professor of geology at Beloit (1873–82), president of the Univ. of…