Vietnam or Thailand ? Vote for the TOP Country of the Week !
Clawbonny wanted to consider this phenomenon nearer, but the ice prevented them approaching the coast; although the temperature had a tendency to rise, it was easy enough to see that the icebergs and ice-streams were accumulating to the north of Baffin's Sea. The land offered a very different aspect from that of Uppernawik; immense glaciers were outlined on the horizon against a greyish sky.
This is the other extreme. But in the case of ordinary glaciers ice-streams the bowlders of the terminal deposit are mixed; the angular or upper-formed predominating in the small existing glaciers of temperate climates, but the rounded or nether-formed greatly predominating in the grand old glaciers of which we have been speaking.
There the difficulty of navigating amongst the ice grew greater. The sea is narrower there, and the line made by Crozier, Young, Day, Lowther, and Garret Islands, like a chain of forts before a roadstead, forced the ice-streams to accumulate in this strait.
By running north for the first two days I hoped to get warmer weather and also to avoid lines of pack that might be extending beyond the main body. We needed all the advantage that we could obtain from the higher latitude for sailing on the great circle, but we had to be cautious regarding possible ice-streams.
Thus, all the land, for three or four miles back from the Lake-margin, both north and south of Rubicon Point, is composed of confluent glacial deltas, and on these deltas the moraine ridges are the natural levees of these ice-streams. e. Parallel Moraines. The moraines described above are peculiar and almost unique.
I should like now to offer some nearer views of a few characteristic specimens of these wonderful old ice-streams, though it is not easy to make a selection from so vast a system intimately inter-blended.
The brig instantly obeyed; her prow was directed towards the point indicated; the sea foamed under the screws, and the Forward, with all speed on, entered between two ice-streams. The road was found, Hatteras descended upon deck, and the ice-master took his place. "Well, captain," said the doctor, "we are in the famous strait at last."
In the large ice-streams of some darker glacières, this ice assumed a rather lighter colour by candle-light, but always presented the same granular appearance, and cut up into the same prismatic nuts, and was evidently free from constitutional opacity.
However, although the Forward had nothing to fear from the collision of the ice-streams, which were still pretty far apart, they made very little progress northward, for contrary winds often forced them to stop. They passed Capes Spencer and Innis slowly, and on Tuesday, the 10th, cleared 75 degrees to the great delight of Clifton.
Although the direction of the ice-streams in Greenland may coincide in the main with that which separate glaciers would take if there were no more ice than there is now in the Swiss Alps, yet the striation of the surface of the rocks on an ice-clad continent would, on the whole, vary considerably in its minor details from that which would be imprinted on rocks constituting a region of separate glaciers.
Word Of The Day