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sandstone
(Encyclopedia) sandstone, sedimentary rock formed by the cementing together of grains of sand. The usual cementing material in sandstone is calcium carbonate, iron oxides, or silica, and the hardness…quartzite
(Encyclopedia) 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,…Old Red Sandstone
(Encyclopedia) 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…Hoy
(Encyclopedia) Hoy, island, 13 mi (21 km) long and 6 mi (9.7 km) wide, off N Scotland, second largest of the Orkney Islands. It is located at the southwestern side of the Scapa Flow anchorage. Ward…Dunnet Head
(Encyclopedia) Dunnet Head, sandstone promontory, 341 ft (104 m) high, Highland, NE Scotland. It is the northern extremity of the Scottish mainland.Duncansby Head
(Encyclopedia) Duncansby Head or Duncansbay Head, sandstone cliff, 210 ft (64 m) high, Highland, NE Scotland. It is the northeastern extremity of the Scottish mainland.Garden of the Gods
(Encyclopedia) 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…Royal Tunbridge Wells
(Encyclopedia) Royal Tunbridge Wells, town (1991 pop. 57,699), Kent, SE England. Mineral springs were discovered in 1606, and the town developed as a fashionable inland resort. Visitors have included…Nubian Desert
(Encyclopedia) Nubian Desert, eastern region of the Sahara Desert, c.157,000 sq mi (407,000 sq km), NE Republic of Sudan, NE Africa, between the Nile and the Red Sea. The arid region, largely a…Enchanted Mesa
(Encyclopedia) 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.…Trending
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