Some solifluction surfaces and terraces in the ice-free valleys of Victoria Land, Antarctica

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Abstract
Extensive areas of flattened debris in the beds of the Onyx River and other streams of the ice-free valleys of southern Victoria Land, Antarctica are attributed not to flood plain formation but to solifluction. Flattening of the debris sheet is the result of slow flowage of saturated materials above a permafrost table and the presence of boulders on the surface of the deposit is attributed to preferential growth of ice crystals beneath them. The streams are incapable of moving the coarse debris. Solifluction terraces on slopes with a relatively high snowfall are also described.

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