The genesis of stratified ice of the Triglav glacier has not been clarified yet. Probably, it was similar to that of other glaciers (Wilchelm, 1972, pp. 159-l60), where the origin of strata is explained with unequal sliding at contacts between strata. Such sliding of strata of the glacier mass in the Triglav glacier can be concluded upon rare personal observations in which it was noted that the upper stratum at the lower edge was projecting over the lower one by some centimeters, and upon Fig. 11 from Šifrer (1976, p.225), where darker bands which mark thc ends of individual strata slightly undulate above the obstacle - an isolated roche moutonee.
Fig. 3 - On the part of the lower icefield (the picture of which was taken on September 24, 1994), there is ice (seen in the middle of the upper third of the photograph), tossed with and partly covered with rubble. Since glacier water deposits humus particles on the soaked snow, the ice is separated from the snow with a dark band. When it freezes at night, it gradually changes into more or less dense water-ice.
The bands normally run in the west-east direction, and they usually curve most strongly downwards in the western part of the glacier where the upper icefield depression is the widest. The unequal sliding of the upper ice strata has also been demonstrated by the recent, mostly unsuccessful experiments with the iron marker poles hammered into the ice, which were ejected next summer (Meze, 1955, 29/30). The movement of the ice has also been confirmed by the coloured stones which were, wrapped in the PVC foil, inserted on the glacier's surface in two profiles in the west-east direction. Between the summers of 1981 and 1982, the stones moved downward in the lower profile of the glacier, from 0.45 to 2.85 m (by 1.6 m on average). In the upper profile the result was void since stones slid unequally over the steeper surface (Gams, 1983).
The melting of snow on the surface of the glacier is not only limited to the melting season. In clear, late September or early October days with warm noons and cold nights, surveyors of the glacier observed that water murmur under the snow cover of the glacier only ceased to be heard late in the evening.
The average daily minimum temperature at Kredarica amounts to 1.40C in September, and the maximum 6.70C. The most favorable climatic conditions necessary to form ice occur in May when the average daily minimum temperature is -2.50C, and the maximum is 2.30C, and at that time, the sun is already strong (see tables 1,2,3). A considerable number of days with positive maximums occur, besides in October and in spring, particularly in April, when the mean daily maximum temperature amounts to 1.80C. At the peak of daily temperature and insolation the surface snow intensely melts, and during the night or in colder weather this water freezes on the cooler basis. In late summer, when the weather is anticyclonic, less water freezes because most of it is drained into the rocky base.
