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Geologic History of Kansas

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Figure 7

Figure 7--Isopachous map of Ogallala Formation in northwestern Kansas. Outcrop has been intricately dissected by westward-heading streams and almost severed in Kansas by Smoky Hill River in Wallace, Logan, and Gove Counties.

Ogallala in thick band through Greeley, Wichita, Scott, and Lane; another in Cheyenne, Rawlins, Decatur, Sherman, Thomas, Sheridan.

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