a national park in SW Oregon, in the Cascade Range: Crater Lake. 250 sq. mi. (648 sq. km).
noun 1. a bowl-shaped depression in the earth in central Arizona: believed to have been made by the impact of a meteoroid. 4000 feet (1220 meters) wide; 600 feet (183 meters) deep.
[krey-ter] /ˈkreɪ tər/ noun 1. the cup-shaped depression or cavity on the surface of the earth or other heavenly body marking the orifice of a volcano. 2. Also called impact crater, meteorite crater. (on the surface of the earth, moon, etc.) a bowl-shaped depression with a raised rim, formed by the impact of a meteoroid. […]
noun 1. a national monument in S Idaho: site of scenic lava-flow formations.
[krey-ton] /ˈkreɪ tɒn/ noun, Geology. 1. a relatively rigid and immobile region of continental portions of the earth’s crust. /ˈkreɪtən/ noun 1. (geology) a stable part of the earth’s continental crust or lithosphere that has not been deformed significantly for many millions, even hundreds of millions, of years See shield (sense 7) craton (krā’tŏn’) A […]