Some lakes are due to the blockade of ancient valleys by morainic debris, and this class includes many of the lakes of the Adirondacks, the mountain regions of New England, and the Laurentian area.
Terminal Moraine of a Glacier in Montana The ice has melted back from the morainic ridge on the left and is building another on the right.
A section of the valley may have been blockaded with morainic waste, and the lake formed behind the barrier may have found outlet over the country to one side of the ancient drift-filled valley.
Valley trains head in morainic plains, and their material grows finer down valley and coarser toward their sources.
The basins were left among the tangle ofmorainic knolls and ridges (Fig.
Morainic heaps of drift are dissected and carried away.
In almost every valley of the Sierras and the Rockies the records of these vanished ice streams may be found in cirques, glacial troughs, roches moutonnees, and morainic deposits.
Lagozza is the name given to a small natural "bacino torbosa" situated in an undulating plateau of morainic débris, about 4 miles from Gallarate in the province of Milan.
The strato archeologico lies under a thin covering of sand and gravel, which Cavazzocca explains to be the débris of the disintegrated morainic coast carried outwards by the boisterous action of the waves.
This morainic basin is situated in the vicinity of Ivrea, immediately to the south of the village of Giovanni, and it also has yielded, from time to time, antiquities which leave no doubt that it was a home of the lake-dwellers.
The Clay Morainic Belt occupies the region from just below Portage Lake to Ypsilanti.
The Clay Morainic District was originally dominated by forests of oak and hickory.
Tamarack bogs, some of large size, are abundant in the Interlobate Moraine District and occur commonly also in the Clay Morainic District, but are practically wanting in the Lake Plain District.
To the left are seen the great morainic accumulations at the border of the glaciated area on Long Island (298).
Whenever mountain glaciers push out their fronts beyond the borders of the mountain range by which they are nourished, they spread upon the foreland in broad aprons about which morainic accumulations are particularly heavy.
The morainic character is plainly recognizable, sometimes in curved ridges and walls falling steeply on both sides, sometimes in rounded hillocks rising one above another.
At length the river becomes as broad as a small lake, enclosed in morainic rubbish and driftsand.
Compass in hand, he followed the extraordinary ridges of morainic material lying between Bangor and Katahdin, to the Ebeene Mountains, at the foot of which are the Katahdin Iron Works.
After passing over very rough morainic ground with snow still lying in patches and quite devoid of vegetation, we reached Hveravellir, a perfect oasis in the desert.
After crossing the river the ground was very rough, being composed of morainic matter from the adjacent mountains and covered with large angular blocks of lava.
From this ridge, on which there were many "erratic" boulders, a fine view of Maelifellshnukr was obtained; at the foot of the peak beyond the Svarta there is a series of morainic hills.
We have a little difference of opinion as to whether this morainic material has been brought down in surface layers or pushed up from the bottom ice layers, as in Alpine glaciers.
To-day I walked round the shores of the North Bay examining the kenyte cliffs and great masses of morainic material of the Barne Glacier, then on under the huge blue ice cliffs of the Glacier itself.
The shifting of levels in the morainic material would account for the drying up of some lakes and the terrace formations in others, whilst curious trenches in the ground are obviously due to cracks in the ice beneath.
A great embankment of morainicmaterial with ice beneath, once part of the glacier, on the lowest slopes of Erebus at the landward end of C.
Thus arose the type of stratified drift variously known as overwash plains, outwash plains, morainic plains, and morainic aprons.
The morainic or outwash plain bordering the terminal moraine.
Devil's lake then occupies an unfilled portion of an old river valley, isolated by great morainic dams from its surface continuations on either hand.
At some points in this vicinity the ridge assumes the normal morainic habit, but this is true for short distances only.
Seen from the west, the moraine just north of the south quartzite range stands up as a conspicuous ridge twenty to forty feet above the morainic plain which abuts against it.
The bands on this berg were particularly well defined; they were due to morainic action in the parent glacier.
The spot was separated from the mountain-side by a low morainic bank, rising twenty or thirty feet above sea-level.
Also, there were built across the valleys a number of stony morainic ridges.
It has been suggested that the deposit may have been laid down in an extra-morainic lake, or in an extension of the North.
This is indicated by extensive moraines in the lower part of the valleys and by the existence of numerous lakes, attributable, like so many in Europe and North America, to the irregular deposition of morainic material by the ancient ice-sheet.
In other places, still, there were vast masses of ice covering many acres, and buried beneath a great depth of morainic material which had been swept down upon it while joined to the main glacier.
But the motion of the ice is very slow, and the ice coarse-grained in structure, and it bears a small amount only of morainic material.
The Tasman Glacier, described by Haas, is ten miles long and nearly two miles broad at its termination, "the lower portion for a distance of three miles being covered with morainic detritus.
These are probably remnants of a morainic accumulation which were made during a pause in the first advance of the ice, and were finally sculptured into their present shape by the onward movement of the ice.
Everywhere, however, over this area these morainic accumulations approximate pretty closely to the extreme boundary of the glaciated region.
Within the area in England and Wales covered by the Irish Sea Glacier all the phenomena point to the action of land-ice, with the inevitable concomitants of subglacial streams, extra-morainic lakes, etc.
When the ice finally melts away and removes the support from the overlying morainic débris, this settles down in a very irregular manner, leaving enclosed depressions to which there is no natural outlet.
The basins were left among the tangle of morainic knolls and ridges as the margin of the ice moved back and forth.
In almost every valley of the Sierras and the Rockies the records of these vanished ice streams may be found in cirques, glacial troughs, roches moutonnecs, and morainic deposits.
Some lakes are due to the blockade of ancient valleys by morainic delms, and this class includes many of the lakes of the Adirondacks, the mountain regions of New England, and the Laurentian area.
Mortillet that in the peat which has filled up one of the "morainic lakes" formed by the ancient glacier of the Ticino, M.
Some of the material in that morainic ridge was transported by the ice from northern New England.
Most common of all lake basins of glacial origin are those formed by accumulation of glacial débris or morainic materials acting as natural dams across valleys.
During the retreat of the ice heavy morainic accumulations were left as dams across the valley at each end of the lake.
The remarkable shift of the Sacandaga River from its preglacial channel was caused by the building up of a great morainic ridge across the valley in the vicinity of Broadalbin.
Several of the morainic areas were no longer visible, and it was possible to run between the rocks for a considerable distance.
The morainic boulders visible from the camp at the depot were now obscured behind a point to the west of Depot Bay.
The morainic accumulations of North America have been distributed upon the same principles as the similar deposits of our own Continent.
In the case of the erratics and morainic accumulations of the basin of the Rhone, the action of icebergs is entirely precluded.
Although the occurrence of such sub-aeerial products intercalated between separate morainic accumulations is evidence of climatic changes, still it does not tell us how far the glaciers retreated during an interglacial stage.
Julien has described the morainic accumulations of a large glacier that flowed from Mont Dore.
CN] This breccia rests upon old morainic accumulations, and is again overlaid by the later moraines of the great Inn glacier.
Frequently, too, one comes upon rounded cones and smooth banks of morainic gravel and sand, and heaps of coarse shingle and boulders, while erratics in thousands are scattered over the whole district.
At that place a bank of morainic matter at one time blocked up the valley of the Kale, and thus formed a wide and extensive lake that stretched up to and beyond Morebattle.
In the latter district, the conglomerates occur in such masses and so exactly resemble the morainic debris and ice-rubbish of modern glacial regions, that the late Sir A.
Some of them rest upon hard rock, others upon till, and yet others crown the tops and slopes of gravel and sand hillocks, or appear in low mounds of morainic origin.
Erratics and morainic materials which are unquestionably of Alpine origin have been followed a long way up the Seran valley--for two-thirds of its length at least.
After that glacier had retreated a prolonged period of erosion followed, when the morainic deposits were deeply trenched, and the underlying rocks cut into.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "morainic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
