Columbia Encyclopedia

Search results

500 results found

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 eddies, or circular ...

oleaster

(Encyclopedia)oleaster ōˌlēăsˈtər [key], common name for members of the Elaeagnaceae, a family principally of shrubs with leathery leaves and a dense covering of glistening hairs. Most members of the family a...

babbler

(Encyclopedia)babbler, common name for some members of the large, diversified family Timaliidae, passerine birds found primarily in wooded areas of Asia, Africa, and Australia. Babblers have soft, fluffy plumage an...

Stegner, Wallace

(Encyclopedia)Stegner, Wallace (Wallace Earle Stegner), 1909–93, American writer, b. Lake Mills, Iowa, grad. Univ. of Utah (1930). He wrote perceptively of the American West in short stories, e.g., The Woman on t...

Logan, Sir William Edmond

(Encyclopedia)Logan, Sir William Edmond, 1798–1875, Canadian geologist. Educated in England, he managed (1831–38) coal mines and a copper smelter in Wales. In addition to making studies of clays underlying coal...

asphalt

(Encyclopedia)asphalt ăsˈfôlt, –fălt [key], brownish-black substance used commonly in road making, roofing, and waterproofing. Chemically, it is a natural mixture of hydrocarbons. It varies in consistency fro...

Coast Ranges

(Encyclopedia)Coast 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. ...

soapstone

(Encyclopedia)soapstone or steatite stēˈətīt [key], metamorphic rock of which the characteristic and usually chief mineral is talc, but which also contains varying parts of chlorite, mica, tremolite, quartz, ma...

phlox

(Encyclopedia)phlox, common name for plants of the genus Phlox and for members of the Polemoniaceae, a family of herbs (and some shrubs and vines) found chiefly in the W United States. The family includes many popu...

popular music

(Encyclopedia)popular music: see country and western music; folk song; gospel music; jazz; rap music; rock music. ...