Depressions Sentence Examples
South of the Bermejo the land is more elevated and drier, though large depressions covered with marshy lagoons are to be found, similar to those farther north.
The water-courses and depressions of the shingly steppes afford pasturage sufficient for the guanaco, and in places support a thorny vegetation of low growth and starved appearance.
Lake Torrens, the largest of these depressions, sometimes forms a sheet of water 100 m.
The cells belonging to any given thread may be recognized at an early stage of growth, because each cell is connected with its neighbors belonging to the same thread by two depressions or pits, one at each end.
They are due largely to sinkholes or depressions caused by solution of the limestone of the region.Advertisement
The depressions between the ridges are not filled up with cement.
There are, however, among these border-ranges several breaches of continuity - broad depressions or trenches leading from Lake Balkash and Lake Zaisan to the upper parts of the plateau.
All the valleys and depressions bear traces of immense post-Pliocene lakes.
According to Lecointe, the young wall consists partly of cellulose and partly of a substance which is not cellulose, the latter existing in the form of slight depressions, which mark the position of the future pores.
The primary distinction of the forms of the crust is that between elevations and depressions.Advertisement
These elevated masses are divided from one another by similar great depressions.
Within this space three depressions, all running S.W.
The depressions which gap the borders of the central plateau thus acquire a greater importance than the small differences in its vertical elevation.
Not a tree is to be seen, the few woods and thickets being hidden in the depressions and deep valleys of the rivers.
Innumerable clusters of wild cherries (Prunus Chamaecerasus), wild apricots (Amygdalus nana), the Siberian pea-tree (Caragana frutescens), and other deep-rooted shrubs grow at the bottoms of the depressions and on the slopes of the ravines, imparting to the steppe that charm which manifests itself in the popular poetry.Advertisement
Some rivers, notably the Kur (Kyros, Araxes) which flows into the Bakhtegan lake east of Shiraz, drain into inland depressions or lakes.
On the one hand he may make the line follow the natural inequalities of the ground as nearly as may be, avoiding the elevations and depressions by curves; or on the other he may aim at making it as nearly straight and level as possible by taking it through the elevations in cuttings or tunnels and across the depressions on embankments or bridges.
An embankment-bank, or fill, is the reverse of a cutting, being an artificial mound of earth on which the railway is taken across depressions in the surface of the ground.
The kavirs, or salt depressions, of the Persian desert are more frequently widespread deposits of mud and salt than water-covered areas.
Although for the purposes of geographical nomenclature, boundaries formed by a coast-line - that is, by depressions of the earth's solid crust below the ocean level - are most easily recog- Political nized and are of special convenience; and although such divisions.Advertisement
There are, it is true, mountain ranges which are formed of folded beds; but in many cases the direction of the chains is different from that of the folds, so that the ranges must owe their elevation to other causes; and the folds, moreover, are of ancient date, for the most part Archaean or Palaeozoic. The configuration of the region is largely due to faulting, trough-like or tray-like depressions being formed, and the intervening strips, which have not been depressed, standing up as mountain ridges.
Structurally, the folds of this region are of ancient date; but the area is crossed by a series of depressions formed by faults, and the intervening strips, which have not been depressed to the same extent, now stand up as mountain ranges.
The recognition of these, minute and fragmentary as many were, and the referring them to their proper place, rendered necessary an attentive study of the comparative osteology and myology of birds in general, that of the " long bones," whose sole characters were often a few muscular ridges or depressions, being especially obligatory.
The most striking feature in the structure of Syria is the existence of long Graben, or narrow depressions formed by faulting.
The faulting which formed the depressions is certainly later than the deposition of the Cretaceous beds and probably belongs to the later portion of the Tertiary era.Advertisement
The shores of all the lakes which filled the depressions during the Lacustrine period abound in remains dating from the Neolithic Stone period; and numberless kurgans (tumuli), furnaces and so on bear witness to a much denser population than the present.
In the larger depressions, like that of the Reconcavo of Bahia, there are large alluvial areas celebrated for their fertility.
Small springs of fresh water are frequent and there are 'several shallow lakes or pans - flat bottomed depressions with no outlet.
The surrounding tissue enlarges, so that the spots appear as if sunk in depressions, and bear a considerable resemblance to hailstone wounds.
It is, however, a region of past volcanic activity, and these salt depressions may be due to that cause.
Only for the intervention of man these rivers would at all times find their way into the adjoining depressions, which they would maintain as lakes of water.
Some are contained in alluvial depressions in the river valleys; others have been formed by volcanic eruptions, the ejecta damming the rivers until exits were found over cliffs or through gorges.
They owe their origin to depressions of the earth's crust of no very wide extent and not running very far into the continental mass, and geologically they are of recent age and still subject to change.
In these respects they contrast with the great oceans which owe their origin to the most extensive and the profoundest depressions of the crust, date back at least to Mesozoic times, and have perhaps remained permanently in their present position from still remoter ages.
The former are either the extensions of oceanic depressions, e.g.
Strong evidence of this is afforded by the association of some of the depressions, notably the Japan Trench and the Atacama Trench, with the origin of frequent submarine earthquakes.
Captain Sherard Osborn in 1870 was the first to recognize that the North Atlantic Basin was divided by a central rise running generally from north to south into two parallel depressions.
There are no depths, however, much exceeding 2500 fathoms amongst these depressions.
The greatest of the intercontinental seas, the Arctic, comes nearest to oceanic conditions in the extent and depth of its depressions.
It is a remarkable geographical fact that on the rises and in the basins of moderate depth of the open ocean the organic oozes preponderate, but in the abysmal depressions below 2500 or 3000 fathoms, whether these lie in the middle or near the edges of the great ocean spaces, there is found only the red clay, with a minimum of calcium carbonate, though sometimes with a considerable admixture of the siliceous remains of radiolarians.
Sir John Murray believes that no more than a few feet of red clay have accumulated in the deepest depressions since the close of the Tertiary period.
The northern half is more broken and irregular; elevations, usually rounded, mingle with depressions some of which are occupied by small shallow lakes or ponds, the characteristic physical features of this region being due to glaciation.
In formation it resembles the limestone Alps of Tirol and there are on its elevated plateaus a number of doline or funnel-shaped depressions into which the melted snow and the rain sink.
The principal rivers are the Mashkid and that of Bampur which flow away from the sea and are lost in depressions called hamuns.
To the east the valley is characterized by swamps and forests, but to the west the natural depressions freely carry off the surface drainage.
Large and valuable deposits of the sand have been obtained in sinks and depressions on the surface of the chalk.
In numerous depressions, some of which may have been the beds of lakes formed by beaver dams, the soil is deep and largely of vegetable formation.
Behind the Tell is a lofty table-land with an average elevation of 3000 ft., consisting of vast plains, for the most part arid or covered with esparto grass, in the depressions of which are great salt lakes and swamps (Arabic, shats) fed by streams which can find no outlet to the sea through the encircling hills.
To the Pliocene period the marine deposits of the Sahel of Algiers and of the Sahel Jijelli must be attributed; also the lacustrine marls and limestone of the basin of Constantine, and the ancient alluviums of the basins and depressions which bear no relation to the existing valleys.
The average depth varies from 1500 to 2500 fathoms, and from this level innumerable volcanic ridges and peaks rise almost or quite to the surface, their summits for the most part occupied by atolls and reefs of coral formation, while interspersed with these are depressions, mostly of small area, among which the deepest soundings recorded have been obtained.
The Hohe Tauern contains many high lying valleys, traversed by the streams which flow into the Salzach, as well as numerous depressions and passes, here called popularly Tauern.
Deperet points also that we owe to Cuvier the first clear expression of the idea of the increasing organic perfection of all forms of life from the lower to the higher horizons, and that, while he believed that extinctions were due to sudden revolutions on the surface of the earth, he also set forth the pregnant ideas that the renewals of animal life were by migration from other regions unknown, and that these migrations were favoured by alternate elevations and depressions which formed various land routes between great continents and islands.
The two noteworthy depressions in its surface, the Valley of Mexico and Bolson de Mapimi, once contained large bodies of water, of which only small lakes and marshy lagoons now remain.
They may be divided into two classes; those of the plateau region which occupy lacustrine depressions and receive the drainage of the surrounding country; and the tide-water lagoons of the coast formed by the building up of new sand beaches across the indentations in the coast-line.
In the northern region are large marshy depressions, in which the water is often salt.
The best known of these depressions, Ngami, lies to the north-west and is the central point of an inland water system apparently in process of drying up. To the north-east and connected with Ngami by the Botletle river, is the great Makari-Kari salt pan, which also drains a vast extent of territory, receiving in the rainy season a large volume of water.
The arrangement of the Great Lakes is thus seen to he closely synipathetic with the course of the lowlands worn on the two belts of weaker strata on either side of the Niagara cuesta; Ontario, Georgian Bay and Green Bay occupy depressions in the lowland on the inner side of the cuesta; Erie, Huron and Michigan lie in depressions in the lowland on the outer side.
Here and there faint depressions occur, occupied by marshy sloughs, or floored with a rich black soil of pestglacial origin.
If this be true, the southern district will furnish a good illustration of an advanced stage of the cycle of arid erosion, in which the exportation of waste from enclosed depressions by the wind has played an important part.
The tilting of the mountain mass was presumably not a simple or a single movement; it was probably slow, for Pitt river (headwaters of the Sacramento) traverses the northern part of the range in antecedent fashion; the tilting involved the subdivision of the great block into smaller ones, in the northern half of the range at least; Lake Tahoe (altitude 6225 ft.) near the range crest is explained as occupyilig a depression between two block fragments; and farther north similar depressions now appear as aggraded highland meadows.
In the north, the Strait of Juan de Fuca and the intricately branching waterways of Puget Sound between the Cascade and the Olympic ranges occupy trough-like depressions which were filled by extensive glaciers in Pleistocene times; and thus mark the beginning of the great stretch of forded coast which extends northward to Alaska.
Yet Tsaidam is geographically but a northern extension of the great Tibetan plateau, and in most of its essential physical features it is more closely allied to the Chang-t'ang of the south than to the great sandy depressions of Chinese Turkestan or Mongolia on the north.
It may be compared directly with that of the pure solvent, as the vapourpressure of a pure liquid is determined, by placing solvent and solution respectively above the mercury in two barometer tubes, and comparing the depressions of the mercury with the height of a dry barometer at the same temperature.
In the depressions of the dunes and on' the geest grounds at their foot, small woods have been planted in places, and in this sheltered strip market-gardening and horticulture are practised.
A portion of this is carried away by the wind before it is consolidated; a larger portion accumulates in hollows and depressions of the region.
The spots at which they were crossed are called passes (this word is sometimes though rarely applied to gorges only), and are the points at which the great chain sinks to form depressions, up to which deep-cut valleys lead from the plains.
They thus form a single connected whole as contrasted with the plains at their base, and nature has made no breaks therein, save at the spots where they sink to comparatively low depressions or passes.
The bottom of the border as well as that Cymbidium Cypripedium Cyrtopodium Dendrobium Diacrium Disa Epidendrum Eulophia Eulophiella Galeandra Gongora Grammatophyllum Habenaria Houlletia lonopsis Ipsea Laelia Laelio-Cattleya* Leptotes Lissochilus Lycaste Masdevallia Miltonia Mormodes Odontoglossum Odontioda* Oncidium Peristeria Pescatorea Phaj us Phaio - calanthe* Phalaenopsis Pilumna Platyclinis Pleione Pleurothallis Polystachya Promenaea Renanthera Restrepia Rodriguezia S accolabium Schomburgkia Scuticaria Sobralia Sophro-cattleya* Sophronitis Spathoglottis Stanhopea Thunia Trichopilia Trichosma Vanda Zygo - colax* of the drain must be kept lower than the general level of the subsoil, else the soakage will gather in all the little depressions of its surface.
It must be further remarked that both the " dunepans," or depressions, which are naturally marshy through their defective drainage, and the geest grounds - that is, the grounds along the foot of the downs - have been in various places either planted with wood or turned into arable and pasture land; while the numerous springs at the base of the dunes are of the utmost value to the great cities situated on the marshy soil inland, the example set by Amsterdam in 1853 in supplying itself with this water having been readily followed by Leiden, the Hague, Flushing, &c.
But in the latter case their edges still determine the effective profile of the furnace walls because the depressions at the back of these edges become filled with carbon and scoriaceous matter when the furnace is in normal working.
The surface is by no means a uniform plain, but is a broad undulating tract, furrowed throughout by numerous depressions, with precipitous banks, serving as water-courses, though rarely traversed by any considerable stream.
In a few localities the surface depressions hold water for the greater part of the year but there is only one permanent lakeKeilat, which is some four miles by two.
All three were dry or marshy depressions previously to the cutting of the Suez Canal, at which time the waters of the Mediterranean and Red Sea were let into them (see SUEZ CANAL).
Oases.In the western desert lie the five large oases of Egypt, namely, Siwa, Baharia, Farafra, Dakhla and Kharga or Great Oasis, occupying depressions in the plateau or, in the case of the last three, large indentations in the face of limestone escarpments which form the western versant of the Nile valley hills.
In Polysiphonia they cover the joints of the so-called leaves; in Chondria they arise on flattened disks; in the more massive forms they arise in patches on the ordinary surface; in a few cases (Gracilaria, Corallina, Galaxaura) they line the walls of conceptacle-like depressions.
But the dominant cause in the determination of the topographical prominences and depressions of the district has been the relative hardness and softness of the rocks.
Though on the whole transverse, these depressions furnish another notable example of that independence of geological structure already referred to.
The earliest rain that fell upon these ridges would run off them, first in transverse watercourses down each short slope, and then in longitudinal depressions wherever such had been formed during the terrestrial disturbance.
They are depressions in the valleys, not due to local heaping up of detritus, but true rock-basins, often of great depth.
Then the ocean gradually retired into the great Central Asian depressions.
The former of these, representing the bottommoraine of the ice-sheet, are covered with Glacial and post-Glacial clays (partly of lacustrine and partly of marine origin) only in the peripheral coast-region - or in separate areas in the interior depressions.
In fact, its course lies through a string of depressions formerly filled with wide lakes, all linked together.
Jungle will not grow on these depressions, and they are covered either with water, reeds, high grasses or rice cultivation.
It slopes toward the south, and its lower levels are filled with lakes and with depressions where lakes formerly existed.
Below the Bio-Bio river there is a line of large picturesque lakes extending from the province of Cautin, south through that of Llanquihue, corresponding in character and position to the dry lacustrine depressions extending northward in the same valley.
During heavy rains and when the snows on the hills melt, thousands of streams flow from all directions into the innumerable depressions of inner Persia, or help to swell the perennial rivers which have no outlet to the sea.
In the broader depressions between the mountain ridges the beds are said to be but little disturbed.
The plateau is bleak and inhospitable in the north, barren and arid toward the south, containing great saline depressions covered with water in the rainy season, and broken by ridges and peaks, the highest being the Cerro de Tahua, 17,454 ft.
They fill slight depressions and are caused by defective drainage.
Collecting in the central depressions, which have a mean elevation of scarcely more than 500 ft.
Dr Sven Hedin explored the central depressions in 1906.
These are commonly called lakes, but are in reality shallow depressions receiving water from the overflow of the rivers in times of flood, and in return feeding them when the floods have subsided.
The westward prolongation of the great south-western promontory of England, occupied by the county of Cornwall, continues as a rugged ridge broken by a succession of depressions, and exceeds a height of Boo ft., nearly as far as the point where it falls to the ocean in the cliffs of Land's End.
The elevated land is divided into three masses by depressions, which furnish ready means of communication between east and west.
The chief paths of depressions are from southwest to north-east across England; one track runs across the south-east and eastern counties, and is that followed by a large proportion of the summer and autumn storms, thereby perhaps helping to explain the peculiar liability of the east of England to damage from hail accompanying thunderstorms. A second track crosses central England, entering by the Severn estuary and leaving by the Humber or the Wash; while a third crosses the north of England from the neighbourhood of Morecambe Bay to the Tyne.
While these are tracks frequently followed by the centres of barometric depressions, individual cyclones may and do cross the country in all directions, though very rarely indeed from east to west or from north to south.
Inasmuch as the streams entering the basin have no outlet to the ocean, their waters disappear by evaporation, either directly from alluvial slopes over which they pass, or from saline lakes occupying depressions between the mountain ranges.
The surface region which yields a continuous spectrum is called the photosphere; it possesses optically a sharp boundary, which is generally a perfect sphere, but shows occasionally at the rim slight depressions or more rarely elevations.
The positions of springs are determined by permeable depressions in the surface of the ground below the general level of saturation, and frequently also by the holding up of that level locally by comparatively impermeable strata, sometimes combined with a fault or a synclinal fold of the strata, forming the more permeable portion into an underground basin or channel lying within comparatively impermeable boundaries.
Immediately to the north of Wharton deep is the smaller "Maclear deep," and the long narrow "Jeffreys deep" off the south of Australia completes the list of depressions below 3000 fathoms in the Indian Ocean.
As the teeth of the upper and the lower jaws work against each other in masticating, there is a general correspondence or harmony between them, the projections of one series, when the mouth is closed, fitting into corresponding depressions of the other.
The surface is generally rolling and undulating, comprising, with the Upper Peninsula of Michigan, a swelling elevation of land between the three depressions represented by Lakes Michigan and Superior and the Mississippi and the St Croix rivers.
Immense fresh-water lakes, in which were deposited layers of plants (now yielding coal), filled up the depressions of the country.
There are also two other depressions which lie at a lower altitude than the Kara-koshun, but they lie, one (Kulja or Ili) among the Tianshan ranges and the other (Dzungaria) beyond them.
The sori are developed in depressions and are thus protected within the resistent outer wall of the sporocarp. There are usually four sori in Pilularia, while in Marsilia they form two longitudinal rows.
This range, the slopes of which are clothed with Coniferae between the altitudes of 6000 and 9000 ft., separates the valley of Kulja (Ili) on the south from the depressions of Zairam-nor (6820 ft.) and Ebi-nor (670 ft.) in the valley of the Borotala on the north, the said valley opening out eastwards into the wider valley of Dzungaria.
It is formed by a widening out of the eastern axis of high ground, which becomes subdivided into a number of zones running north and south and consisting in turn of ranges, tablelands and depressions.
In the upper teeth, as the depressions are deeper, this obliteration does not take place until about two years later.
The water-partings are characteristically level uplands, often with shallow depressions, once lakes, and some of them still so.
The apertures of the tracheal system are placed in the depressions between the papillae or ridges of the skin.
This resistance is due to the roughness of the surfaces; the minute projections upon each enter more or less into the minute depressions on the other, and when motion occurs these roughnesses must either be worn off, or continually lifted out of the hollows into which they have fallen, or both, the resistance to motion being in either case quite perceptible and measurable.
This depression is occupied in great part by a series of lakes, some of these filling transversal breaches in the range, whilst others are remains of glacial reservoirs, bordered by morainic dams, extending as far as the eastern tableland and corresponding in these cases with transversal depressions which reach the Atlantic Ocean.
The surrounding matrix will of course show the mould of the cast, with its elevations and depressions reversed.
Its greatest depth is about 700 fathoms, the deepest parts (over Soo fathoms) occurring in three depressions in the northern portion - one close under the European shore to the south of Rodosto, another near the centre of the sea, and a third at the mouth of the Gulf of Ismid.
The coarser materials settle nearer the land, and the shallower portions of the sea floor are strewn with gravel and sand, except in occasional depressions and near the mouths of rivers where mud may gather.
This theory, however, is not universally accepted, some authorities preferring to assume a succession of more strictly local elevations and depressions, connected with the recent volcanic activity of the Jaulan and Lija districts on the east bank, which brought the contours finally to their actual form.
High pressure areas are called an anticyclones, and low pressure areas, cyclones, or more commonly depressions.
Your psychosis, depressions, murderous impulses, short sighted narrow minded and utterly primitive barbarism is tearing into me.
Back to top Rain spotting Cause Depressions or surface blemishes in the paint film.
It is often found in damp depressions, often with the insectivorous butterwort.
The shell was prepared by first filling any larger depressions or rough areas with a flexible filler.
It is indeed a real pity, about Bob's depressions.
It then shrinks on drying out and distorts the paint surface with shallow saucer shaped depressions known as cupping.
Around bog pools there may sometimes be patches of 7150 Depressions on peat substrates of the Rhynchosporion.
Other forms show no indication of ever having been attached, while some that had been moored by means of a peduncle during the early portion of their existence have become detached at a more advanced stage of life, the opening becoming gradually cicatrized, as is so often seen in Leptaena rhomboidalis, Orthisina anomala, &c. Lastly, some species adhere to submarine objects by a larger or smaller portion of their ventral valve, as is the case with many forms of Crania, Thecidium, Davidsonia, &c. Some Cranias are always attached by the whole surface of their lower or ventral valve, which models itself and fills up all the projections or depressions existing on either the rock, shell or coral to which it adhered.
In the southern part of the Basin Range province the ranges are well dissected and some of the intermont depressions have rock floors with gentle, centripetal slopes; hence it is suggested that the time since the last dislocation in this part of the province is relativel remote; that erosion in the current cycle has here advanced muc farther than in the central or northern parts of the province; and that, either by outwash to the sea or by exportation of wind-borne dust, the depressions-perhaps aggraded for a time in the earlier stages of the cyclehave now been so deeply worn down as to degrade the lower and weaker parts of the tilted blocks to an evenly sloping surface, leaving the higher and harder parts still in relief as residual ranges.
The anterior part of the penis is formed by the glans, a bell-shaped structure, apparently continuous with the corpus spongiosum, and having the conical ends of the corpora cavernosa fitted into depressions on its posterior surface.
This may be due to rising ride maintenance costs, decreasing park attendance, or larger economic issues such as depressions or recessions that limit tourism and keep guests from enjoying a day at the park.
In addition to softening and reducing fine lines and wrinkles, this skin care moisturizer cream adds fullness and suppleness and plumps depressions, leading to a more youthful complexion.
These minor ranges, excepting the Zenta, are separated from the Andean masses by comparatively low depressions and are usually described as distinct ranges; topographically, however, they seem to form a continuation of the ranges running southward from the Santa Victoria and forming the eastern rampart of the great central plateau of which the Puna de Atacama covers a large part.