ABSTRACT
The glaciofluvial deposits of the ‘slump’ facies, appear as variable sediments dominated by the clay and silt fractions, such as poorly sorted sand, containing pebbles and detrital grass mixtures. These ‘slump’ deposits are, for the most part, characterised by large-scale cross bedding. The glaciolacustrine deposits may be classified into different groups of facies of rhythmically-bedded deposits on the basis of their structure. Combinations of the facies determine the internal structure of the meltwater land-forms. The forms of the meltwater deposits are generally controlled by the distribution and morphology of features formed by glacial or meltwater erosion, i.e. valleys, hollows and small gullies in which the sediments were deposited. The sediment fillings of proglacial basins were formed either between the glacial margin and extra-glacial (preglacial) topography, between active and dead-ice, or in valley-like depressions that existed before glaciation.
