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Geologic History of Kansas

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Figure 20

Figure 20--Electric-log cross section in southwestern Nebraska and northwestern Kansas showing possible correlation and stratigraphic relations of Cretaceous beds between Graneros Shale and Pierre Shale.

Set of electric logs showing how correlations may exist between rocks of 
Nebraska and Kansas.

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