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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...

Kyffhäuser

(Encyclopedia)Kyffhäuser kĭfˈhoizər [key], forested mountain, c.1,550 ft (470 m), Saxony-Anhalt, central Germany. It is crowned by the two ruined castles of Rothenburg (7th cent.) and Kyffhausen (12th cent.) an...

Bedford, cities, United States

(Encyclopedia)Bedford. 1 City (2020 pop. 13,068), seat of Lawrence co., S Ind.; inc. 1889. Bedford limestone, quarried there and shipped all over the world, was ...

Stamford, town, England

(Encyclopedia)Stamford, town (1991 pop. 18,127), in the Parts of Kesteven, Lincolnshire, E central England, on the Welland River. It is a market town. Products include diesel engines, electrical equipment, bricks, ...

marble

(Encyclopedia)marble, metamorphic rock composed wholly or in large part of calcite or dolomite crystals, the crystalline texture being the result of metamorphism of limestone by heat and pressure. The term marble i...

Dinaric Alps

(Encyclopedia)Dinaric Alps dīnârˈĭk [key], Ital. Alpi Dinariche, Serbo-Croatian Dinara Planina, mountain system, extending c.400 mi (640 km) along the east coast of the Adriatic Sea from the Isonzo River, NE It...

chalk

(Encyclopedia)chalk, mineral of calcium carbonate, similar in composition to limestone, but softer. It is characteristically a marine formation and sometimes occurs in great thickness; the chief constituents of the...

Guadalupe Mountains National Park

(Encyclopedia)Guadalupe Mountains National Park gwäˈdəlo͞op [key], 86,416 acres (34,998 hectares), W Tex. Located in the Guadalupe Mts., the park contains parts of the world's largest and most significant Permi...

Nullarbor Plain

(Encyclopedia)Nullarbor Plain [Lat.,=no trees], vast, barren limestone plateau, c.100,000 sq mi (260,000 sq km), S Australia, extending from the Great Victoria Desert (N) to the Great Australian Bight (S) in Wester...

Ozarks, the

(Encyclopedia)Ozarks, the, or Ozark Plateau, upland region, actually a dissected plateau, c.50,000 sq mi (129,500 sq km), chiefly in S Mo. and N Ark., but partly in Oklahoma and Kansas, between the Arkansas and Mis...