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Canadian Shield
(Encyclopedia)Canadian Shield or Laurentian Plateau lôrĕnˈchən [key], U-shaped region of ancient rock, the nucleus of North America, stretching N from the Great Lakes to the Arctic Ocean. Covering more than hal...paleomagnetism
(Encyclopedia)paleomagnetism, study of the intensity and orientation of the earth's magnetic field as preserved in the magnetic orientation of certain minerals found in rocks formed throughout geologic time. Paleom...Alaska North Slope
(Encyclopedia)Alaska North Slope or Arctic North Slope, region, N Alaska, sloping from the Brooks Range N to the Arctic Ocean. In 1968 large petroleum reserves were found in the Prudhoe Bay area. In 1977 the 800-mi...Prince
(Encyclopedia)Prince, 1958–2016, American singer and songwriter, b. Minneapolis, Minn., as Prince Rogers Nelson. Biracial, slim, and sexily androgynous, he was an electrifying performer who composed hundreds of s...melon
(Encyclopedia)melon, fruit of Cucumis melo, a plant of the family Curcurbitaceae (gourd family) native to Asia and now cultivated extensively in warm regions. There are many varieties, differing in taste, color, an...Palmdale
(Encyclopedia)Palmdale, city (1990 pop. 68,842), Los Angeles co., S Calif., in the irrigated Antelope Valley; a growing residential suburb of Los Angeles near Little Rock Creek where it forms Lake Palmdale Reservoi...cotinga
(Encyclopedia)cotinga kōtĭngˈgə [key], any of the New World tropical birds of the family Cotingidae. Cotingas range from N Argentina to the southern border of the United States; most are forest species and inha...Liston, Sonny
(Encyclopedia)Liston, Sonny (Charles Liston), 1932–71, American boxer, b. Little Rock, Ark. While serving a sentence for robbery at the Missouri State Penitentiary, Liston became interested in boxing. In 1953 he ...Cambrian period
(Encyclopedia)Cambrian period [Lat. Cambria=Wales], first period of the Paleozoic geologic era (see Geologic Timescale, tablegeologic timescale, table) extending from approximately 570 to 505 million years ago. It ...rock
(Encyclopedia)rock, aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided, according to their o...Browse by Subject
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