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Rif

(Encyclopedia) RifRifrĭf [key] or Rif Atlas, range of the Atlas Mts., NE Morocco, NW Africa, curving along the Mediterranean coast from Ceuta to Melilla. Tidighin (8,056 ft/2,455 m) is the highest…

Kern

(Encyclopedia) Kern, river, 155 mi (249 km) long, rising in the S Sierra Nevada Mts., E Calif., and flowing south, then southwest to a reservoir in the extreme southern part of the San Joaquin valley…

Mulholland, William

(Encyclopedia) Mulholland, William, 1855–1935, American engineer, b. Belfast, Ireland. He arrived in Los Angeles in 1877, becoming a laborer for the local water company. Despite his lack of formal…

bighorn, in zoology

(Encyclopedia) bighorn or Rocky Mountain sheep, wild sheep, Ovis canadensis, of W North America, formerly plentiful in mountains from SW Canada to N Mexico. Indiscriminate hunting, disease, and…

The Dalles

(Encyclopedia) The DallesThe Dallesdălz [key], city (1990 pop. 11,060), seat of Wasco co., N Oreg., on the Columbia River; inc. 1857. It is a busy inland port; ships passing through the locks at…

Long Valley

(Encyclopedia) Long Valley, caldera, c.10 by 20 mi (15 by 30 km), Mono co., E Calif., at the eastern edge of the Sierra Nevada. Formed by a catastrophic eruption c.730,000 years ago, Long Valley and…

batholith

(Encyclopedia) batholith, enormous mass of intrusive igneous rock, that is, rock made of once-molten material that has solidified below the earth's surface (see rock). Batholiths usually are granitic…

Heizer, Michael

(Encyclopedia) Heizer, Michael, 1944–, American sculptor and painter, b. Berkeley, Calif., studied San Francisco Art Institute (1963–64). Heizer was one of the artists who developed land art in the…

Central Valley

(Encyclopedia) Central Valley, great trough of central Calif., c.450 mi (720 km) long and c.50 mi (80 km) wide, between the Sierra Nevada and the Coast Ranges. The Sacramento and San Joaquin rivers…

Atlas Mountains

(Encyclopedia) Atlas Mountains, system of ranges and plateaus in NW Africa, extending c.1,500 mi (2,410 km) from SW Morocco, through N Algeria, to N Tunisia; Jebel Toubkal (13,671 ft/4,167 m), in SW…