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Geologic History of Kansas

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Figure 23

Figure 23--Isopachus map of beds between top of Dakota and base of Cretaceous. Inasmuch as the upper surface was essentially flat and horizontal and the lower surface is erosional, countours show position and shape of pre-Cretaaceous topographic features. Contour interval 100 feet.

Greatest thickness of 800 contoured in eastern Finney; that rise stretches north through western sides of Lane and Gove; 800 also in central Trego oand southern Graham.

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Kansas Geological Survey, Geologic History of Kansas
Comments to
Web version April 2006. Original publication date Dec. 1963.