Word Finder - outcrop

definition

A piece of land that stands out (usually into water) from the land surrounding.

definition

A coming out of bedrock or of an unconsolidated deposit to the surface of the ground.

definition

The part of a rock formation that appears at the surface of the ground.

definition

(of a stratum) To come out to the surface of the ground.

In mines that are worked from the outcrop by adits or day levels traction by locomotives driven by steam, compressed air or electricity is used to some extent.

The underlying geology is volcanic lava flows, which outcrop in some areas.

The outcrop of beds at the surface is commonly the truncation of these curves.

Veins of amethystine quartz are apt to lose their colour on the exposed outcrop.

Smaller patches of the Coal Measures appear near Tamworth and Burton, while deep shafts have been sunk in many places through the overlying Triassic strata to the coal below, thus extending the mining and manufacturing area beyond the actual outcrop of the Coal Measures.

As they circled an outcrop of rock, they were surprised to see a yellow open-top Jeep parked behind the boulders, invisible from below.

The Snake Period arose from the sight of a black adder sunning itself on a rocky outcrop.

Locally quarried breccia is the predominant material, once quarried from the breccia outcrop on Loton deer park.

These, together with the limited rainfall over most aquifer outcrop areas, resulted in a steep increase in soil moisture deficits.

St Michael's Mount The rocky outcrop, crowned with a large castellated mansion, is an unmistakable landmark of the Cornish coastline.

The Upper Coal Measures outcrop between Halesowen and West Bromwich and largely comprise marls, red sandy mudstones and grits.

Brentor Church Built in the 12 th Century this church stands high on a volcanic outcrop.

Hendersick point proper is unmistakable, with its jagged rocky outcrop just proud of the coast path.

The solid, mainly chalk geology of the Yorkshire Wolds is the most northerly outcrop of chalk in Britain.

Toward the middle of the basin a limestone outcrop has been smoothed by passing ice, forming pavement.

In the park is a red sandstone outcrop with pale bands above the river bank.

Valdepeñas An outcrop of gently hilly land in the flat, arid plains of central Spain, south of Madrid.

I saw a ptarmigan flash by, it's white body picked out against a black rock outcrop.

At the north end of the reserve area there is an outcrop of Triassic sandstone.

Once inside the reef area the scenery was very different, very sandy with the occasional rocky outcrop.

The hard ' grit ' sandstones and intervening shales of the Millstone Grit outcrop west of Bradford and to the north of Leeds.

The presence of calcareous bands within otherwise mainly siliceous rocks often brings the two types together on the same rock outcrop.

One of the most dramatic features of much of the Torridonian outcrop is the basal unconformity with the Lewisian basement.

The sight of the castle on its rocky outcrop, 180 feet above the pretty village is simply unforgettable.

There are also limestone and fireclay, firebrick and cement works, chiefly on the northern outcrop of the carboniferous limestone, as at Abernant in the Vale of Neath and at Penwyllt.

Such mutations are not the product of the environment, but are an outcrop of the constitution of the germinal material of the varying organism, the result either of causes as yet undetected, or of the premutations and eliminations suggested by the work of Mendel (see Mendelism).

We rested that night in a sandy cove, the boat firmly secured to a rocky outcrop.

This was certainly not a settlers colony, the rocky, barren outcrop was little more than a fishing station.

Ironstone within a small outcrop of the Lower Greensand at Seend was formerly quarried and the ore smelted on the spot.

An outcrop just beyond the trig column appeared to be the highest point.

The ironstone seam varied in thickness from 8ft at the outcrop to 5ft high and 80 yards wide where mining was abandoned.

Fragments of coal, or soil stained black with coal, will be found near the outcrop tif coal beds.

By tracing such indications up the stream or up the hillside the outcrop may sometimes be found, or at least approximately located.

The outcrop of a metalliferous vein frequently manifests itself as a line of rocks stained with oxide of iron, often honeycombed and porous, the " gossan " or " eisen-hut," the iron oxide of which results from the decomposition of the pyrites, usually present as a constituent of such veins.

By sinking additional pits or by extending the costeaning trenches and uncovering the outcrop of the deposit more fully it is sometimes possible to obtain all the information required for the most extensive and important mining operations.

Even when the outcrop is oxidized, and Surface the mineral character and richness of the deposit is Explora- altered thereby, it is possible to determine variations tion.

If the deposit shows great variations in thickness in its outcrop along the surface it is probable that a drift or a slope would show the same thing in depth.

If the workable areas are poor, and appear only at long intervals along the outcrop, the chances of discovering richer areas by a shaft are very small.

For example, the deposit does not outcrop as in the case of blind.

Below the oxidized outcrop the vein is often increased in value by secondary enrichment, sometimes to a depth of several hundred feet.

A drift or entry is a horizontal passageway starting from the outcrop and following the deposit.

If the outcrop of the vein or bed is accessible the shaft may be inclined and sunk to follow the deposit.

When the deposit lying below the surface is horizontal, or nearly so, or when the outcrop of an inclined deposit is not accessible, a vertical shaft will be necessary.

This derangement being carefully noted, another bore to the outcrop on the same principle is put down for the purpose of proving the seam C; the nature of the strata at first is found to agree with the latter part of that bored through in No.

The evidence therefore of these bores (3 and 4) indicates some material derangement, which is then proved by other bores, either towards the dip or the outcrop, according to the judgment of the borer, so as to ascertain the best position for sinking pits.

In the early days of coal-mining, open working, or quarrying from the outcrop of the seams, was practised to a considerable extent; but there are now few if any places in England where this can be done.

The Thanet beds resting on chalk form a narrow outcrop rising into cliffs at Pegwell Bay and Reculver, and consist (1) of a constant base bed of clayey greenish sand, seldom more than 5 ft.

After dipping below the London Clay at Canterbury, it sends out an outcrop which forms the greater part of Thanet.

This is succeeded by an outcrop of the Lower Greensand - including the Folkestone, Sandgate and Hythe beds with the thin Atherfield Clay at the base - which extends across the country from west to east with a breadth of from 2 to 7 m., and rises into the picturesque elevations of the Ragstone hills.

During the heroic Boleslawic period there had been a premature outcrop of civil life.