It’s all ocean bottom. http://digital.library.okstate.edu/encyclopedia/entries/L/LI004.html says it’s all over the state. Remember, when you dig down through the thin soils (and anything less than 35 feet of glacial till topped by 25 feet of topsoil is ‘thin’) there’s limestone all over the place. OK doesn’t have the glacial till, but it does have plenty of ancient lakebeds and even a salt flat or two ~ but underneath it’s limestone ~
Sorry, but I worked in the OKC area as a hydrogeologist for over 10 years (and a bit as a petroleum geologist in the western portion of the state). I know the area. The limestone that you reference is at or near the surface in the NE portion of the state (where I now live), and exposed in the mountains in the SE (Ouachitas) and S (Arbuckles and Wichitas).
Look up the Anadarko Basin. OKC is on the eastern perimeter of this basin, with Permian shales and sandstone exposed at the surface, and at depth. The limestone that you referenced are more than 25,000 feet deep in the deeper portions of the basin. Above is shale, sandstone and some thin, discontinuous limestone, mostly shale.
Underneath the OKC area are the Garber and Wellington Formations, mostly sandstone and interbedded shale, up to a depth of several thousand feet. This is the main aquifer of the area.
Try this link for the state geologic map: http://pubs.usgs.gov/of/2003/ofr-03-247/OK_map.pdf.