Abstract
Soils formed on dune summits in a small section of a northeast Colorado dune field reveal striking variability in development that is due in part to episodic dune formation but also to spatial variation in the supply of windblown material. Deposits from at least four periods of eolian activity display a pedogenic sequence that commonly includes the development of soil lamellae. With increasing dune age, the lamellae increase in number and coalesce into argillic horizons as the percentage of clay and silt increase in the illuvial horizons. Disparate soil development on similar age deposits reflects erosion of the soil surface at windward locations and material addition along a corridor of more recent sand movement.
Published Version
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