quartz sandstone

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• quartz — quartzose /kwawrt sohs/, quartzous /kwawrt seuhs/, adj. /kwawrts/, n. one of the commonest minerals, silicon dioxide, SiO2, having many varieties that differ in color, luster, etc., and occurring either in masses (as agate, bloodstone, chalcedony …   Universalium

• sandstone caves —    Most natural sandstone caves are surface river cut notches at the foot of rock cliffs, or left part way up the cliff due to later downcutting. This origin accounts for most of the caves once inhabited by the Pueblo Indians in the sandstone… …   Lexicon of Cave and Karst Terminology

• Sandstone — is a sedimentary rock composed mainly of sand size mineral or rock grains. Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth s crust. Like sand, sandstone may be any color, but the most… …   Wikipedia

• Sandstone — Sand stone , n. A rock made of sand more or less firmly united. Common or siliceous sandstone consists mainly of quartz sand. [1913 Webster] Note: Different names are applied to the various kinds of sandstone according to their composition; as,… …   The Collaborative International Dictionary of English

• Quartz — Quartz, n. [G. quarz.] (Min.) A form of silica, or silicon dioxide ({SiO2}), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in… …   The Collaborative International Dictionary of English

• quartz´like´ — quartz «kwawrts», noun. a very hard mineral composed of silica, found in many different types of rocks, such as sandstone and quartzite, and as an important constituent in granite, gneiss, and other rocks. Crystals of pure quartz are colorless… …   Useful english dictionary

• Quartz Pebble Hill — (coord|84|44|S|113|59|W|) is a flat topped elevation on the north escarpment of Buckeye Table, Ohio Range, in the Horlick Mountains. The hill is located where Discovery Ridge joins the main escarpment. The rock that forms the hill is composed of… …   Wikipedia

• quartz|ite — «KWAWRT syt», noun. a granular rock consisting mostly of quartz and formed by the metamorphism of sandstone: »Frank L. Hess reported uranium in quartzite of pre Cambrian age very early in the century (Bulletin of Atomic Scientists) …   Useful english dictionary

• sandstone — ► NOUN ▪ sedimentary rock consisting of sand or quartz grains cemented together, typically red, yellow, or brown in colour …   English terms dictionary

• sandstone — [sand′stōn΄] n. a common bedded sedimentary rock much used for building, composed largely of sand grains, mainly quartz, held together by silica, lime, etc …   English World dictionary

• sandstone — /sand stohn /, n. a common sedimentary rock consisting of sand, usually quartz, cemented together by various substances, as silica, calcium carbonate, iron oxide, or clay. [1660 70; SAND + STONE] * * * Sedimentary rock formed from sand sized… …   Universalium