- quartz arenite
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variety of the rock quartzite (q.v.) formed by deposition of silica in subterranean sandstone.
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Universalium. 2010.
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Universalium. 2010.
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… … Wikipedia
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
quartzite — quartzitic /kwawrt sit ik/, adj. /kwawrt suyt/, n. a granular metamorphic rock consisting essentially of quartz in interlocking grains. [1840 50; QUARTZ + ITE1] * * * Sandstone that has been converted into a solid quartz rock. Quartzites are… … Universalium
Superior craton — in the west. The western margin extends from northern Minnesota through eastern Manitoba to northwestern Ontario.The formation of the Superior craton is best explained within the context of 2.72 2.68 Ga accretion of small continental plates and… … Wikipedia
Landslip Hill — Landslip Hill, near Tapanui, in Southland, in the South Island of New Zealand is a debris flow feature associated with the Manuherikia Group of fluvial quartz sandstones. Geologists have described the fossil bearing rocks as forming part of a… … Wikipedia
Clark Quarry — is a relatively new paleontological dig site in southern Georgia. The site first discovered fossils by the building of the Brunswick Canal in 1838 1839.[1][2][3] Contents 1 Geology … Wikipedia
Orex Exploration — Inc. Type Public (TSX V: OX) Industry Mining Founded 1987 … Wikipedia
arkose — arkosic, adj. /ahr kohs/, n. a granular sedimentary rock composed of quartz and feldspar or mica; a feldspathic sandstone. [1830 40; < F] * * * Coarse sandstone that has formed by the disintegration of granite without appreciable decomposition.… … Universalium
Gres (geologie) — Grès (géologie) Pour les articles homonymes, voir Grès. Grès (géologie) … Wikipédia en Français