Old Red Sandstone, series of red and brown sandstones, conglomerates, and shales deposited in Wales and Scotland and in England near the Welsh and Scottish borders in the Devonian period of ge...

New Red Sandstone, name for the thick red layer of the Triassic formation in Great Britain (see Triassic period). It is many thousands of feet thick and is composed chiefly of red sandstones, ...

Dunnet Head, sandstone promontory, 341 ft (104 m) high, Highland, NE Scotland. It is the northern extremity of the Scottish mainland.

Duncansby Head or Duncansbay Head, sandstone cliff, 210 ft (64 m) high, Highland, NE Scotland. It is the northeastern extremity of the Scottish mainland.

Bluestone, common name for the blue, crystalline heptahydrate of cupric sulfate called chalcanthite, a minor ore of copper. It also refers to a fine-grained, light to dark colored blue-gray sa...

Mansfield, city (71,325) and district, Nottinghamshire, central England, on the western border of Sherwood Forest. The city lies in a coal district, with manufactures of hosiery, shoes, and me...

Quartzite, usually metamorphic rock composed of firmly cemented quartz grains. Most often it is white, light gray, yellowish, or light brown, but is sometimes colored blue, green, purple, or b...

Enchanted Mesa, sandstone butte, 430 ft (131 m) high, central N.Mex., near the pueblo of Acoma; called Mesa Encantada in Spanish and Katzimo or Kadzima by the Native Americans. According to Ac...

Garden of the Gods, park, 770 acres (312 hectares), central Colo., near Colorado Springs; noted for its unusual, multicolored rock formations. Narrow-crested sandstone hills and ridges have be...

Jedburgh, town (1991 pop. 4,053), Scottish Borders, SE Scotland, on the Jed River. The manufacture of rayon is the main industry. Jedburgh also has tannery, woolen, and corn mills and electric...