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The friction caused some of the bottom ice to melt and released more liquid water, and a cycle had begun.

It was thought that the water quickly flowed between ice and rock and out to sea, with little impact on the bottom ice layers.

Again, can the fact of the weir which had a wall of this bottom- ice three feet high in a single night, be accounted for by radiation?

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.