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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.
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Kansas Geological Survey, Geologic History of Kansas
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Web version April 2006. Original publication date Dec. 1963.
URL=http://www.kgs.ku.edu/Publications/Bulletins/162/fig020.html