lithic arenite

lithic arenite

      sandstone (i.e., sedimentary rock composed of grains 0.06–2 mm [0.0024–0.08 inch] in diameter) containing over 50 percent rock fragments. Lithic arenites most often are of gray or salt-and-pepper colour because of the inclusion of dark rock fragments, mainly slate, phyllite, or schist but also andesite or basalt. Lithic arenites formed by rapid deposition in areas subject to crustal deformation.

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Universalium. 2010.

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  • arenite — /ar euh nuyt , euh ree /, n. Geol. psammite. [ < L (h)aren(a) sand + ITE1] * * * ▪ rock       any sedimentary rock that consists of sand sized particles (0.06–2 millimetres [0.0024–0.08 inch] in diameter), irrespective of composition. More formal …   Universalium

  • 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

  • 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

  • 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

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