Columbia Encyclopedia

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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...

Triassic period

(Encyclopedia)Triassic period trīăsˈĭk [key], first period of the Mesozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table) from 205 to 250 million years ago. Throughout the Triassi...

Los Angeles

(Encyclopedia)Los Angeles lôs ănˈjələs, lŏs, ănˈjəlēzˌ [key], city (1990 pop. 3,485,398), seat of Los Angeles co., S Calif.; inc. 1850. A port of entry on the Pacific coast, with a fine harbor at San Ped...

children's literature

(Encyclopedia)children's literature, writing whose primary audience is children. See also children's book illustration. The contributions and innovations of the 19th cent. continued into the 20th cent., achieving...

modern art

(Encyclopedia)modern art, art created from the 19th cent. to the mid-20th cent. by artists who veered away from the traditional concepts and techniques of painting, sculpture, and other fine arts that had been prac...

North Carolina

(Encyclopedia)CE5 North Carolina, state in the SE United States. It is bordered by the Atlantic Ocean (E), South Carolina and Georgia (S), Tennessee (W), and Virginia (N). ...