Abstract
Abstract Some examples of polygenetic processes in the formation of soils in Antarctica are outlined. Two main types of polygenetic soils are found. The first are formed by additions of parent material either at the surface through the retreat of re-advanced ice over pre-existing soil surfaces, or by the addition of unweathered detritus at the base of profiles through accelerated moraine ablation. The second are formed by the redistribution and mixing of soil material by cryoturbic processes. The examples of polygenetic processes described, and their effects on soil development, are for the most part localised and are a result of possibly only small variations in local climatic or other conditions. Even on very ancient surfaces and on steep stable slopes there is little evidence of widespread pedogenetic discontinuity, and profiles appear to show the effects of cumulative weathering over prolonged periods of time. From the absence of evidence for extensive soil rejuvenation, it is inferred that there have...
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