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Outcrop |
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outcrop
part of a rock formation or mineral vein that appears at the surface of the earth outcrop [′au̇t‚kräp] (geology) Exposed stratum or body of ore at the surface of the earth. Also known as cropout. outcrop That portion of a rock formation or stratum that breaks the surface of the ground. Outcrop exposed bedrock at the earth’s surface. Outcrops are generally found along riverbanks, along the slopes of ravines, and on the crests of ridges. Natural outcrops are formed by the action of natural agents, for example running water, glaciers, and wind. Artificial outcrops are either specially created or result from mine work entailing excavations and the construction of ditches, wells, prospect holes, shaft mines, and adits. The study of outcrops makes it possible to elucidate the geological structure of a locality and is widely used in geological surveying. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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