Recent studies in the midwest have confirmed a relationship between the thickness and distribution of the loess and the morphological, chemical and physical properties of soils developed from loess. In southwestern Iowa studies by Hutton (2) and Ulrich (6) showed increased differentiation of soils as the distance from the loess source increased and the thickness of the loess decreased. Hunter (1) reported similar relationships between the properties of the loess and soils developed in southeastern Iowa. This paper presents the results of a preliminary study regarding the possibility of similar relationships in northwestern Iowa. Profile sites were selected on loess of varying thickness and samples were brought into the laboratory for analys...
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