In the general subaerial denudation of a country, innumerable minor features are worked out as the structure of the rocks controls the operations of the eroding agents.
As an eroding agent it must to some extent effect chemical decompositions in the rocks and sediments over which it spreads; but these changes have not yet been satisfactorily studied.
According to one school ice is a more powerful eroding agent than water; according to another its action is largely conservative, and its power of erosion is slight as compared with that of water.
At a still later stage the land surface has been so worn by the eroding forces that the whole process of erosion is slackened, and an uplift must occur before the erosive forces regain their lost strength.
Let us next proceed to consider how the eroding agents act upon the surface of the land as soon as it is exposed.
According to the other school, for whom ice is a more powerful eroding agent than water, the cirque was produced by the ice, its presence or absence, in e.
Long gorges or canyons tend to occur in regions where river erosion is not greatly assisted by the other eroding agents.
Eroding here and depositing on the inner side of the bend, it gradually reaches first the open bend (Fig.
Extending its graded course upstream by cutting away barrier after barrier, it comes to have a widened and mature valley over its lower course, while its young headwaters are still busily eroding their beds.
Here is what the chief justice of the United States wrote: "Judicial vacancies cannot remain at such high levels indefinitely without eroding the quality of justice.
Recession and inflation are eroding the money of millions more.
It is eroding the unity of what was once a Stalinist empire.
Much the greater part, however, of the earthy matter which rivers convey in such quantity to the ocean, is furnished by other means than the erodingaction of the river itself.
But he knew that they were only a stopgap, only a temporarily shoring of a constantly-eroding dam.
The attraction of her mass produced tides in the ocean of correspondingly greater magnitude, and capable of effecting results, both in eroding the surface and in transporting masses of rock, far beyond the bounds of our every-day experience.
Rivers eroding displacement along the and written their glacial fall line of the rivers.
The abettors of glaciers can urge the elevation of the surface, the supposed powers of glaciers as eroding agents, and the transport of boulders.
This street may have been much wider in times of yore--for it seemed to be quite an old village--and the encroachments of the eroding river during freshets may have reduced it to its present narrowness.
Aneurysm of the descending aorta may, after eroding the bodies of the vertebræ (Fig.
It may extend beneath the clavicle into the neck, or, extending inwards may form adhesions to the chest wall, and, after eroding the ribs, to the pleura.
The great eroding power of glacial ice is strikingly illustrated in this glacier, which seems to have cut down and carried away on the northeastern side of the mountain, fully a third of its mass.
Indeed, so intense and so long-continued has been the eroding action of the ice that the cone is now deeply ice-scarred and furrowed.
It is now known that cirques are produced primarily by the eroding action of the ice masses embedded in them.
The cold wave of winter may pass right through a thin glacier, or the constant temperature may be too low to permit of the ice melting at the base, in which cases the glacier is "dry" and has great eroding power.
It is but one phase of the long controversy between opposing schools, which have advocated on the one hand the efficiency of glacier ice as an eroding agent, and upon the other its supposed protection from the weathering processes.
To gain some conception of the importance of wave cutting as an eroding process, we may consider the late history of Heligoland, a sandstone island off the mouth of the Elbe in the North Sea (Fig.
As already pointed out, the inefficiency of the American Fall as an erodingagent is amply attested by the wall of blocks already appearing above the water below it.
After the cessation of volcanic activity, the eroding agencies of the Quaternary Period carved out the valley of the Lamar River through these accumulated flows, and laid bare the remains of their vegetable growths.
After the flow had ceased, the ordinary atmospheric and aqueous agencies began work, eroding the surface in some places and depositing the products of erosion in others, while vegetation rapidly covered the newly-formed soil.
An instance that fell under my own observation, in 1857, will serve to show something of the eroding and transporting power of streams which, in these respects, fall incalculably below the torrents of the Alps.
Their eroding action also is most powerful at the same period, both because their mechanical force is then greatest, and because the loose earth and stones of freshly cleared forest-ground are most easily removed.
Occasionally they have been found in pipes of gravel, let down into the chalk by means of water charged with carbonic acid eroding its upper surface.
We may also, for the purposes of the argument, take the position of the coast-line as permanent, instead of its constantly receding in consequence of the eroding power of the sea upon the cliffs.
The annular propagation of the ring-worm, and its continuing to enlarge its periphery, is well accounted for by the acrimony of the ichor or saline fluid eroding the skin in its vicinity.
Professor Heim and others have frequently asserted that glaciers have little or no eroding power, since at the lower ends of existing glaciers we find no evidence of such erosion being in operation.
The eroding power of such a glacier-mass must be enormous, and Dr.
But, as one should expect, such erosion is most marked in the hilly regions--in those areas where steep slopes induced more rapid motion of the ice, and where projecting crags and hills opposed the advance of the eroding agent.
The eroding and degrading forces have ages since passed the meridian of their day's work, and grass and verdure hide their footsteps.
The Sierra lies beyond the southern limit of the great continental ice-sheet of late Tertiary times, but it nursed and reared many local glaciers, and to the eroding power of these its Yosemites are partly due.
The type is found eroding out of several predominately Woodland shell middens in the Wheeler Basin of the Tennessee River.
Two vast eroding bends covering several miles of distance gradually approach each other until the water forces a passage across the narrow neck.
The appearance of the head, neck, body and wings is preserved, but the tail and four limbs have been carried away by eroding waters which even now have not quite forsaken the cañon.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "eroding" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: corrosive; corrupting; damaging; injurious
