Columbia Encyclopedia

Search results

500 results found

fossil

(Encyclopedia)fossil, remains or imprints of plants or animals preserved from prehistoric times by the operation of natural conditions. Fossils are found in sedimentary rock, asphalt deposits, and coal and sometime...

seafloor spreading

(Encyclopedia)CE5 Schematic model of the oceanic crust, showing seafloor spreading seafloor spreading, theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwate...

mountain

(Encyclopedia)mountain, high land mass projecting conspicuously above its surroundings and usually of limited width at its summit. Although isolated mountains are not unusual, mountains commonly form ranges, compri...

Corregidor

(Encyclopedia)Corregidor kərĕˈgĭdôrˌ [key], historic fortified island (c.2 sq mi/5 sq km), at the entrance to Manila Bay, just off Bataan peninsula of Luzon island, the Philippines. From the days of the Spani...

Death Valley

(Encyclopedia)Death Valley, SE Calif. and SW Nev., a deep, arid basin, 140 mi (225 km) long, bordered on the W by the Panamint Range and on the E by the Amargosa Range. In summer the valley has recorded some of the...

Alcatraz

(Encyclopedia)Alcatraz ălˈkətrăzˌ [key] [Sp. Álcatraces=pelicans], rocky island in San Francisco Bay, W Calif, about one mile (1.61 km) north of San Francisco. Alcatraz was first sighted by the Spanish in 177...

Alvarez, A.

(Encyclopedia)Alvarez, A. (Alfred Alvarez) ălvärˈĕz, ălˈvərĕzˌ [key], 1929–2019, English writer, critic, and poet. He was a theater critic, a writer for the British Broadcasting Corp., a poetry editor an...

Henry, Pierre Georges

(Encyclopedia)Henry, Pierre Georges, 1927–2017, French composer noted for his contributions to electronic music. He studied with Nadia Boulanger and Olivier Messiaen at the Paris Conservatory, where he met Pierre...

Guerrero

(Encyclopedia)Guerrero, state, 24,887 sq mi (64,457 sq km), S Mexico, on the Pacific Ocean. The capital is Chilpancingo. Dominated by the Sierra Madre del Sur, which ...

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 Morocco, is the ...