Abstract
Former wave action on small flutes and adjacent surfaces in the proglacial region of Austre Okstindbreen, Nordland, Norway, has removed the finer fraction of diamictons revealing a skeletal arrangement of boulders that survive on the present land surface. Analysis of the patterns of these boulders, in relation to the outline of the flutes, indicate a concentration of boulders within the diamicton that formed the flute relative to the adjacent unfluted surface. Within each skeletal flute the pattern of boulders indicates a large boulder or cluster of large boulders at the ice-proximal end, a preferred orientation of elongate blouders which are not in contact with other boulders, and the clustering of packs of randomly orientated boulders at other locations. On the basis of this evidence, along with evidence from detailed particle size and fabric studies of diamicton in adjacent flutes (Rose, 1989), it is suggested that flutes are formed by the transfer of new sediment directly from the glacier, and the transfer of existing sediment from adjacent erosional troughs. Because of their large size, boulders are most susceptible to this process, and are therefore transferred preferentially.
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