Assume first, however, that there is no uplift from intrusive water.
Extensive and deep-seated crumpling was necessarily accompanied by vertical uplift throughout the zone affected, but once at least since their birth the mountains have been worn down to a lowland, and the mountains of to-day are the combined product of subsequent uplift of a different sort, and dissection by erosion.
The ores of the Joplin district, in the Ozark uplift in the Mississippi Valley, are remarkable in that they are specially adapted to mechanical concentration.
The rivers are shallow and more or less broken by rapids in the notches; rapids occur also near the outer border of the crystalline belt, as if the rivers there had been lately incited to downward erosion by an uplift of the region, and had not yet had time to regrade their courses.
An uplift, increasing to the south, revealed part of the shallow sea bottom in the widening coastal plain, from its narrow beginning at New York harbour to its greatest breadth of 110 or 120 m.
The coastal plain, however, is the result, not of a single recent uplift, but of movements dating back to Tertiary time and continued with many oscillations to the present; nor is its surface smooth and unbroken, for erosion began upon the inner part of the plain long before the outer border was revealed.
Then came a broad uplift followed by the erosion which carved out the valleys, leaving hard rocks as mountain ridges which rise about to the level of the old erosion plain.
Marine deposits were laid down over the south of the state after a submergence of the region; an uplift afterwards made of these deposits a coastal plain.
All the higher lands of this area are covered by forests; but the Red Valley, lying between the outer ridges and the main uplift, is treeless.
Although the Coast Prairie is a sea bottom of very modern uplift, it appears already to have suffered a slight movement of depression, for its small rivers all enter embayments; the larger rivers, however, seem to have counteracted the encroachment of the sea on the land by a sufficiently active delta building, with a resulting forward growth of the land into the sea.
As far north as the gorge of the Missouri river in Montana, the Front range, facing the Great Plains, is a rather simple uplift, usually formed by upturning the flanking strata, less often by a fracture.
With the renewal of uplift by which the earlier cycle of erosion was interrupted and the present cycle introduced, inequalities of surface due to renewed faulting were again introduced; these still appear as cliffs, of more nearly rectilinear front than the retreating escarpments formed in the previous cycle.
The few rivers of the region must have reached the quiescence of old age iii the earlier cycle, but were revived by uplift to a vigorous youth in the current cycle; and it is to this newly introduced cycle of physiographic evolution that the deep canyons of the Plateau province are due.
This epoch of relative uplift and active erosion is sometimes called the Sierran or Ozarkian epoch.
The sloping surface is gently rolling, and has resulted from the uplift and dissection of a nearly level plain of erosion developed on folded, crystalline rocks.
Arizona itself is mostly included in the great arid mountainous uplift of the Rocky Mountain region, and partly within the desert plain region of the Gulf of California, or Open Basin region.
After the uplift which caused the rivers to cut below the general " uplands," and develop well marked valleys for themselves, came the period of the great continental glaciation.
After the subsidence came another period of uplift, possibly still in progress.
The elevations of the crest in Missouri (the highest portion of the uplift is in Arkansas) vary from 1100 to 1600 ft.
Until the post-Mesozoic uplift of the Rocky Mountain region the north-western portion of the state drained westward.
Copper occurs in various localities, but is of economic importance only in the Ozark uplift; it was first mined in small quantities in 1837.
Three physiographic regions may be distinguished within the state - the first, a small portion of the Ozark uplift in the extreme south-east corner; the second, the Prairie Plains, covering approkimately the east third of the state; the third, the Great Plains, covering the remaining area.
The Triassic beds rest on the various Carboniferous series in turn, indicating, as in England, the amount of denudation that followed on the uplift of the Hercynian' land.
Denudation, consequent on the renewed uplift of the country, affected the Jurassic beds until the middle of Cretaceous times.
The Turonian is also sandy, but in most areas was not deposited, or has been denuded away during a local uplift that preceded Senonian times.
This uplift has brought up submarine deposits of sand, &c., to form little coastal plains at some points along the coast, providing good land for settlement and clay for brick and pottery.
The Ozark uplift tempers very agreeably the summers in the south, but does not affect the climate of the state as a whole.
Further evidence of this uplift is found in old beach lines now well above sea-level.
The postTertiary uplift, giving the present altitude of 1000 or 1500 ft.
In numerous instances clear evidence of recent movements along the fault planes has been discovered; and frequent earthquakes testify with equal force to the present uplift of the mountain blocks.
English Christianity seemed to have no power to uplift the people.