Ice-cored moraines in the Kebnekajse area
DOI:
https://doi.org/10.26485/BP/1962/11/31Keywords:
moraine ridges, resistivity measurements, pogrzebany lód, północna SzwecjaAbstract
As a result of a study of air photographs from the Kebnekajse district in northern Sweden it was obvious that the size and shape of moraine ridges did not correspond with the size of the adjacent glaciers. Very large moraines often occurred beside small glaciers and vice versa. The shapes of the moraine ridges also suggested that they consisted of ice cores covered by relatively thin layers of morainic material. Seismic and electric resistivity measurements proved that ice cores were preserved in many moraines, and a map was compiled of such features in this area. The earth resistivity method was also used for locating frozen ground under thawed surface material. By digging in a frozen lateral moraine ridge, it was possible to obtain core samples from the buried ice. A crystallographic analysis of this ice proved that it must have formed from in situ snow, not from glacier ice.
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