Figure 1--Chart showing cyclic arrangement of Pleistocene deposits in Kansas and major soil-forming intervals. The column at the right refers to surfaces that have been more or less continuously exposed to soil-forming processes. The vertical extent of each time division is arbitrary. (Frye, 1951, p. 406.)
Kansas Geological Survey, Pleistocene Geology
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Web version August 2005. Original publication date Nov. 1952.