durable sandstone

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• sandstone —    A sedimentary rock formed by the compacting of grit or sand with a high silica content bound in a natural cement the silica itself. Many sandstones are soft and easily eroded, but some are quite hard and durable. Sandstone is generally more… …   Glossary of Art Terms

• Hawkesbury sandstone — is a type of sandstone prevalent in the Sydney region of New South Wales, Australia. It dates from the Triassic Period. [cite book |author = Fairley A, Moore P |title=Native Plants of the Sydney District:An Identification Guide |year=2000… …   Wikipedia

• Double-arch Sandstone Bridge — U.S. National Register of Historic Places …   Wikipedia

• Red sandstone — Red Red, a. [Compar. {Redder} ( d?r); superl. {Reddest}.] [OE. red, reed, AS. re[ a]d, re[ o]d; akin to OS. r[=o]d, OFries. r[=a]d, D. rood, G. roht, rot, OHG. r[=o]t, Dan. & Sw. r[ o]d, Icel. rau[eth]r, rj[=o][eth]r, Goth. r[ a]uds, W. rhudd,… …   The Collaborative International Dictionary of English

• Chugwater Formation — (Group) Stratigraphic range: Triassic Outcrop of Chugwater Group near Thermopolis, Wyoming Type sedimentary Underlies …   Wikipedia

• Crab Orchard, Tennessee —   City   Crab Orchard, with Big Rock Mountain in the background …   Wikipedia

• sculpture — sculptural, adj. sculpturally, adv. /skulp cheuhr/, n., v., sculptured, sculpturing. n. 1. the art of carving, modeling, welding, or otherwise producing figurative or abstract works of art in three dimensions, as in relief, intaglio, or in the… …   Universalium

• Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… …   Universalium

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• Headstone — A headstone, tombstone or gravestone is a marker, normally carved from stone, placed over or next to the site of a burial in a cemetery or elsewhere. Use The stele, as they are called in an archaeological context, is one of the oldest forms of… …   Wikipedia

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium