outcrop

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outcrop

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

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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 ?

Now academics have found evidence that the vast stones came from two outcrops in the Preseli Hills and were transported more than 140 miles to Salisbury.

Stonehenge megaliths hewn and hauled from Preseli Hills

Nests occurred in 88 crevices from 74 individual rock outcrops. Seventy-one outcrops (96%) contained one brood crevice, while two outcrops contained two brood crevices (3%), and one outcrop contained four brood crevices (1%).

Nest Success and Attributes of Brood Crevices Selected by Green Salamanders (Aneides aeneus) on the Blue Ridge Escarpment

The difference in the geochemical parameters like source rock quality, source rock maturity and hydrocarbon potential of the outcrop and well data is attributed to the overburden thickness, geothermal gradient, and environment of deposition.

GEOCHEMICAL SOURCE ROCK EVALUATION OF LATE JURASSIC TO EARLY CRETACEOUS ROCKS OF SULAIMAN RANGE, PAKISTAN: INTEGRATION OF OUTCROP AND WELL DATA

Finally shaken up on the flat, Outcrop won with more in hand than the length-and-threequarters victory margin over Millie The Minx suggests, and he ought to be able to overcome an 8lb hike in the weights.

Outcrop can emerge on top despite hike in the weights

Unable to land on the outcrop as it is only accessible to the public from later in May until September, costumed fans posed for pictures in the shadow the Skellig.

Force of sea on the fourth

PHOTO | TOM MWIRARIAAn elderly man has brought his flock to lick the salty outcrop as he rests under an acacia tree.

The 'holy land' where 'Jesus' footprints' are embedded on a rock

The initial objective of this work was to study the newly exposed upper section of the road at the Djega outcrop using foraminiferans and palynomorphs and compare the age with that of the lower strata previously dated by Njoh [7], Njoh and Petters [8], and Njoh et al.

Cretaceous-Tertiary Foraminifera and Palynomorphs from Djega Section and Inferred Paleodepositional Environments, Rio Del Rey Basin, Cameroon, West Africa

Field scale models are generated to mimic the spatial heterogeneity of an outcrop from a carbonate field.

Retention of Nanoparticles: From Laboratory Cores to Outcrop Scale

rigida), buckwheat (Erigonium spp.), rabbitbrush (Chrysothamnus spp.), and Bluebunch Wheatgrass (Pseudoroegneria spicata), with small to large basalt rock outcrops scattered throughout the landscape.

Use of communal shedding sites by the northern pacific rattlesnake (Crotalus oreganus oreganus) in Central Washington State

"We see a diversity of textures in this outcrop some parts finely layered and finegrained, others more blocky with erosionresistant ledges," said Curiosity deputy project scientist Ashwin Vasavada in a statement.

Curiosity rover to probe mysterious rocks on Mars

A recent 3.5 tonne sample from the outcrop portion of the Black Diamond Vein returned 0.77 oz/t gold and 1+ oz/t silver.

Tara Minerals Corp enters into gold ore processing agreement with Rock Solid Investments for Ponderosa project in central Idaho, USA

According to the Culture and Tourism Authority-Abu Dhabi (TCA-Abu Dhabi), a number of ancient mass graves were found on a 700-metre long natural outcrop, called Garn Bint Saud.