The Madison oil field is a part of one of the "shoestring" lines of production in Greenwood County, Kansas, which produce from Bartlesville sand lenses of great linear extent. The pattern and shape of the lenses, their double convex cross section, and their distribution with respect to paleogeography indicate that they represent sand bars and tidal delta bars formed by waves, currents, and tides near shore lines. Some of them may represent stream-channel deposits.

Structure as represented by surface beds, the base of the Kansas City formation, and the top of the "Mississippi lime" seem to conform but to be without definite relation to Bartlesville sand deposits except that these lenses occur between and on the sides of "Mississippi lime" buried hills, with the exception of the Seeley, Clark-Wick, and Shambaugh pools. Inasmuch as Bartlesville sand bodies are lenticular and are surrounded by shale which may have been the source rock, they are excellent oil reservoirs.