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Geologic History of Kansas

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Figure 29

Figure 29--Clastic-percentage map of Morrison Formation (Jurassic) in western Kansas. Distribution of clastics suggests that beds were deposited by northwestward-flowing streams and that source of sediments was southeast (from Merriam, 1955a).

Map shows location and clastic ratio; less than 70% in Sherman and Cheyenne; grades to 100% in boundary from Hamilton, Gove, to Phillips.

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