outcrop


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outcrop

part of a rock formation or mineral vein that appears at the surface of the earth

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.

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.
References in periodicals archive ?
Curiosity has completed a reconnaissance "walkabout" of the first outcrop it reached at the base of "Mount Sharp" in 2013.
Other Areas of Surface Uranium Mineralization Sample Target_Area Type Rock Alteration % U3O8 TP170 Black Lake NE Outcrop Amphibolite Hematite 2.
Table 8 presents the results of samples collected from outcrop of
The natural fracture lines, and the pattern of joints in the granite around the edges of the weathered faces make it possible to establish a typology of the ways in which the outcrop could be worked.
It is likely that other burrows or ichnological structures formed by vertebrates exist in eastern Texas but have been unrecognized or unobserved due to limited outcrop area and exposure.
SOAKER--Part of a rock outcrop lining the inner wall of Eagle crater, the landing site of the Opportunity rover at Meridiani Planum.
Disappointingly, none of these sections use real outcrop photos, measured sections or well log cross sections to demonstrate principles or techniques.
A sheltered entrance to the court is created that enhances its semi-private nature, but the court is connected to the whole site by a reticulated paving pattern that reflects the browns and pinks of the earth of the Australian deserts, out of which, metaphorically, the angular geological outcrop emerges so surprisingly in the middle of the city.
The massive sulphide zone outcrops for about 200 meter along strike, and disappears in both directions beneath overburden and snowfields.
Table 2: Other Zones of Uranium Mineralization - Grease River Project Sample Target Area Type Rock Type U3O8% Mo% U/Th TH008 Fontaine Lake Outcrop Granite-Pink 0.
Hynek of the University of Colorado in Boulder then compared infrared and visible-light images of those rocks with images of light-toned outcrops extending hundreds of kilometers to the north, east, and west.
The outcrops at their Cristal occurrence are stripped of vegetation by exploration crews, and coated with xenoliths, rock fragments encased in volcanic breccias pushed upward from deep inside the mantle.