This paper describes a cross section which shows the stratigraphic relationships between the subsurface rocks of Kansas and the Great Plains and the standard outcrop sections of the Front Range and eastern Kansas. The subsurface expressions and the appearance and disappearance of various elements are emphasized, together with certain facies changes which occur laterally along the line of the cross section. The stratigraphic relationships of the surface and subsurface sections are also shown in greater detail on a correlation chart.

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