Fissures Sentence Examples

It often fills cracks and fissures in the rock.

The great interest in connexion with a dwarf West African race of elephant is in relation to the fossil pigmy elephants of the limestone fissures and caves of Malta and Cyprus.

The deposits near Caylus and in Quercy occupy fissures and pockets in Jurassic limestone, and have yielded a remarkable assemblage of the relics of Tertiary mammals and other fossils.

In Scandinavia a thick turpentine oozes from cracks or fissures in the bark, forming by its congelation a fine yellow resin, known commercially as "spruce rosin," or "frankincense"; it is also procured artificially by cutting off the ends of the lower branches, when it slowly exudes from the extremities.

Minute cracks are sometimes produced by the contraction; they are often more or less straight, but in other cases a very perfect system of rounded fissures arises.

Prairie fires or spontaneous combustion have ignited many coal seams. Some have already burnt out; others still emit smoke and sulphurous fumes from the crevices in the hillsides, and through the fissures may be seen the glowing coal and rock.

The free acid is found native in certain volcanic districts such as Tuscany, the Lipari Islands and Nevada, issuing mixed with steam from fissures in the ground; it is also found as a constituent of many minerals (borax, boracite, boronatrocalcite and colemanite).

Artificial soffioni are sometimes prepared by boring through the rock until the fissures are reached, and the water so obtained is occasionally sufficiently impregnated with boric acid to be evaporated directly.

At the close of the Eocene period great eruptions of augite-andesite took place from two fissures which ran along the west coast.

The present volcanoes lie along a line (with offshoots) which runs parallel to the west coast, but some distance to the east of the fissures from which the early Tertiary lavas were poured.

The surface of this table-land slopes from west to east, as indicated by the direction of the drainage of the country, - the great rivers, the Cauvery, Godavari, Kistna and Pennar, though deriving their sources from the base of the Western Ghats, all finding their way into the Bay of Bengal through fissures in the Eastern Ghats.

These fissures with the basalt that solidified in them now form the vast assemblage of dykes which cross Scotland, the north of England and the north of Ireland.

Almost enclosing it on three sides are rose-coloured mountain walls, divided into groups by deep fissures, and lined with rockcut tombs in the form of towers.

A large region was sunken, enormous fissures were opened in the earth, the surface soil was displaced 3 In 1804, the District of Louisiana, in the administrative system of the Territory of Indiana; in 1805, an independent government, renamed the Territory of Louisiana; in 1812, the Territory of Missouri; in 1816, another grade of territorial government.

On the other hand, some rocks in mountain districts, notably the granites, owing to the great quantity of water stored in their numerous fissures or joints, commonly yield a much higher proportion of so-called dry weather flow.

Wherever, below the surface, there are pores or open fissures, water derived from rainfall is (except in the rare cases of displacement by gas) found at levels above the sea determined by the resistance of solids to its passage towards some neighbouring sea, lake or watercourse.

They are the head slits cephalic fissures, " Kopfspalten ") so characteristic of this subdivision (figs.

Certain varieties, notably some from Russia, possess a beautiful metallic sheen, referable to the presence of either microscopic fissures or enclosures.

Valley gravels .border the Thames, and Pleistocene mammalia have been found in fissures in the Hythe beds at Ightham, where ancient stone implements are common.

This is explained by the fact that the Chalk fissures are almost invariably rounded and enlarged by the erosion of carbonic acid carried from the surface by the water passing through them.

The loss of water by leakage through such joints or fissures below the puddle wall may or may not be a serious matter in itself; but if at any point there is sufficient movement of water across the base of the trench to produce the slightest erosion of the clay above it, that movement almost invariably increases.

The bones of Pleistocene mammals, the rhinoceros, mammoth, bison, hyaena, &c., have been found at numerous places, often in caves and fissures in the limestones, e.g.

The shape of the hills and ridges is necessarily influenced by the inclination of the strata, by the relative hardness of different rock-beds, and by the presence of folds and fissures and other lines of weakness.

But beyond the sphere of irrigation, where the land is dependent on the rainfall, there is much rough stony ground broken by great fissures cut by flood-water from the border hills.

In some places the fissures open directly into the air, but in other parts of the district they are covered by small muddy lakes (lagoni).

It likes fibrous peat in fissures of the rocks.

With the true pipes are associated dykes and fissures also filled with diamantiferous blue ground.

The limestones of which they are mostly composed act like a sponge, absorbing the rain-water through their innumerable pores and fissures, and thus storing it up in the interior, afterwards to allow it to well forth in springs at various elevations lower down.

The water from the melted snow forms a small lake at the bottom of the crater, from which it filters through fissures to the heated rocks below and thence escapes as steam or through other fissures to the mineral springs at the mountain's base.

Mountain areas of io,000 acres and upwards, largely covered with moorland, upon nearly imper meable rocks with few water-bearing fissures, yield in temperate climates, towards the end of the driest seasons, and therefore solely from underground, between a fifth and .a quarter of a cubic foot per second per 1000 acres.

In the New Red Sandstone, the Greensand and the upper Chalk, we find the opposite extremes; while the igneous rocks are for the most part only permeable in virtue of the open fissures they contain.

In practice it is usual in chalk formations to imitate artificially the action of such underground watercourses, by driving from the well small tunnels, or " adits " as they are called, below the water-level, to intercept fissures and water-bearing beds, and thus to extend the collecting area.

Imagine for a moment that the sand grains were by any means rendered immobile without change in the permeability of their interspaces; we could then dispense with the iron or brickwork lining of the well; but as there would still be no cracks or fissures to extend the area of percolating water exposed to the open well, the yield would be very small.

Wherever the base of a puddle wall cannot be worked into a continuous bed of clay or shale, or tied into a groove cut in sound rock free from water-hearing fissures, the safest course is to base it on an artificial material at once impermeable and incapable of erosion, interposed between the rock and the puddled clay.

These fissures are in vertical planes stretching entirely across the puddle trench, and reaching in one case, aa, nearly to the highest level at which the reservoir had been worked for seventeen years after the leakage had been discovered.

Thereafter, in papers published by the Cambridge Philosophical Society and the Geological Society of London, he entered largely into mathematical inquiries connected with geology, dealing with the effects which an elevatory force acting from below would produce on a portion of the earth's crust, in fissures, faults, &c. In this way he discussed the elevation and denudation of the Lake district, the Wealden area, and the Bas Boulonnais.

Moreover, there are gigantic fissures, running for several miles, caused by subsidences of the underlying sections.

Sometimes, however, the lava-streams are vomited straight out of gigantic fissures in the earth without any crater being formed.

Evidently the flint has accumulated along fissures, such as bedding planes, joints and other cracks, after the chalk had to some extent consolidated.

The Danube after leaving Donaueschingen flows south-east in the direction of Lake Constance, and below Immendingen a considerable quantity of its waters escapes through subterranean fissures to the river Ach in the Rhine basin.

Each segment is again divided by lateral fissures, which do not extend quite to the posterior border of the organ; of the central lobes thus cut off, the right is rather the larger, and has two fissures in its free border dividing it into lobules.

The entire island is an old coral reef upheaved 200 ft., honeycombed with caves and seamed with fissures.

The round ligament and the remains of the ductus venosus are hidden in the depths of their fissures.

No extra-pigmental eyes; insertion plates with pectinations between the fissures.

An early observation of the diffusion of gases was recorded by him in 1823 when he noticed the escape of hydrogen from a cracked jar, attributing it to the capillary action of fissures.

The number of parts forming such a corolla can be determined by the divisions, whether existing as teeth, crenations, fissures or partitions, or if, as rarely happens, the corolla is entire, by the venation.

Similar residual clays sometimes occur on the surface of areas of limestone in hollows and fissures formed by weathering.

This brown striated coal glows with fissures of opal, brilliant insights of purple amethyst.

They often grow in a tufted habit in small crevices or fissures on rock faces.

At Hele Bay, good crevice communities are to be found in the fissures and crevice communities are to be found in the fissures and crevices in the extensive bedrock on the shore.

Some cracks in old pipe can leak for decades causing large fissures running through the ground.

The Earthquake is the name given to a series of narrow fissures running along the west side of the island.

The dark brown bark has deep vertical fissures which often spiral up the trunk.

Inch by painful inch, she dragged herself through the broken rock fissures.

In turn each cerebral hemisphere is divided by fissures into five lobes.

Cresswell Crags ' is a limestone gorge honeycombed with caves and smaller fissures.

These thermal waters dissolving limestone well had extended the narrow fissures into cave passages through thousands of years.

The sub-horizontal fissures in the breccia are infilled with laminated shale of identical lithology to the overlying basal bed of the Blue Lias Formation.

Fissures, filled with calcite and sand, were pointed out, thought to be due to brittle fracture, as tectonic uplift occurred.

On the eastern side of the range, after a steep descent, the granite formation speedily gives place to slates of vast depth, intersected here and there by fissures of quartz containing gold, and in many places covered by limestone which has been superimposed upon the slates.

The shingle therefore stood some feet higher than it does now, and it is supposed that a shock or jar, such as that of an earthquake, broke up the stalagmite, and the pebbles and sand composing the shingle sunk deeper into the fissures in the limestone.

The larch remains free from parasitism so long as its covering is intact, but as soon as this is punctured by insects, or its continuity interfered with by cracks or fissures, the Peziza penetrates, and before long brings about the destruction of the branch.

The chief source of boric acid for commercial purposes is the Maremma of Tuscany, an extensive and desolate tract of country over which jets of vapour and heated gases (soffioni) and springs of boiling water spurt out from chasms and fissures.

Any cracks were thus, no doubt, temporarily closed; and as the structure of the rest of the dam was porous, no opportunity was given for the percolating water to accumulate in the horizontal fissures to anything like the head in the reservoir.

Cornwall only has minor aquifers; groundwater is kept in cracks and fissures in the rocks and is replenished by rainfall.

Many geologists fear catastrophic results, especially as construction is on a substructure weakened by geothermal fissures.

It is rarely seen in good health in gardens, and is best in limestone fissures, filled with peat, loam, and sand, mixed in about equal proportions.

Epoxy fill is used to patch natural pits and fissures in the stone.

All granites are prone to pits, fissures and other surface marks.

The polishing process normally masks these imperfections, but occasionally a stone with severe fissures will still show up.

These fissures may be filled with an epoxy resin to mask their presence.

These finishes reveal the fissures, pits and other natural markings within the granite to enhance its natural beauty.

Pay attention to the quality of the corks that you buy and avoid corks that appear cracked or have fissures.

Plaque adheres to the crevices and fissures of the teeth and generates acids that, when not removed on a regular basis, slowly eat away, or decay, the protective enamel surface of the teeth, causing holes (cavities) to form.

Tooth decay in pits and fissures may be differentiated from dark shadows in the crevices of the chewing surfaces by a dye that selectively stains parts of the tooth that have lost mineral content.

Craniosynostosis-A premature closure of one or more of the joints (fissures) between the bones of the skull, which causes an abnormally shaped skull.

When picking a jar to make a candle holder from, check first to make sure that there are no visible cracks or fissures in the glass which may cause the jar to crack when it gets hot.

It has been suggested that these spurs represent the sites of vents or fissures of eruption.

From these structural and palaeontological evidences, geologists suppose that the formation of the cave was carried on simultaneously with the excavation of the valley; that the small streams, flowing down the upper ramifications of the valley, entered the western opening of the cave, and traversing the fissures in the limestone, escaped by the lower openings in the chief valley; and that the rounded pebbles found in the shingle bed were carried in by these streams. It would be only at times of drought that the cave was frequented by animals, a theory which explains the small quantity of animal remains in the shingle.

It was in this lofty rock-girt hollow that the gladiator Spartacus was besieged by the praetor Claudius Pulcher; he escaped by twisting ropes of vine branches and descending through unguarded fissures in the crater-rim.

The volcanic fissures that allowed of the upwelling of basalt are represented by numerous dykes, many cutting the earlier lava-flows as well as all the beds below them.

The portal fissure has been slightly opened up to show the vessels passing through it; the other fissures are represented in their natural condition - closed.

Some observers report that steam is to be seen rising from fissures in the bottom of the crater, and all are united in speaking of the fumes of burning sulphur that rise from its depths.

The eruptions were connected with innumerable fissures up which the basalt rose and from numerous points on which it flowed out at the surface.

When there are fissures radiating in several directions it is called "star shake."

It used to be said that, if this narrow passage were blocked up, escape would be impossible; but an intricate web of fissures, called the Corkscrew, has been discovered, by means of which a good climber, ascending only a few hundred feet, lands 1000 yds.

The so-called "iron roses" (Eisenrosen) of Switzerland are rosette-like aggregates of hexagonal tabular crystals, from fissures in the gneissose rocks of the Alps.

This change of direction corresponds to a curve in the line of volcanic fissures which have contributed their products to the building of the islands.

Characteristic of the country are the enormous fissures which divide it, formed in the course of ages by the erosive action of water.

The whole region abounds with fissures from which steam highly charged with hydrochloric acid is continually issuing, and in many places boiling water is found at a very few feet below the surface.

They hold water like a sponge, but part with it under pressure to fissures by which they are intersected, and, in the case of the Upper Chalk, to ducts following beds of flints.

These fissures take the place of the streams in an impermeable area, and those beneath the valleys must obviously be called upon to discharge more water from the surface, and thus be brought in contact with more carbonic acid, than similar fissures elsewhere.

With the exception of the Red Marls forming the upper part of the Keuper, most of the New Red Sandstone is permeable, and some parts contain, when saturated, even more water than solid chalk; but, just as in the case of the chalk, a well or borehole in the sandstone yields very little water unless it strikes a fissure; hence, in New Red Sandstone, also, it is a common thing to form underground chambers or adits in search of additional fissures, and sometimes to sink many vertical boreholes with the same object in view.