Keokuk and Reeds Spring Formations and St. Joe Group (OKMkr;0)

State	Oklahoma
Name	Keokuk and Reeds Spring Formations and St. Joe Group
Geologic age	Phanerozoic \| Paleozoic \| Carboniferous Mississippian-Early
Original map label	Mkr
Primary rock type	chert
Secondary rock type	limestone
Other rock types	shale; carbonate
Lithologic constituents	Major Sedimentary > Carbonate > Limestone (Bed) Sedimentary > Chemical > Chert (Bed) Minor Sedimentary > Carbonate > Marlstone (Bed) Sedimentary > Clastic > Mudstone > Shale (Bed)
Map references	Heran, W. D., Green, G. and Stoeser, D. B., 2003, A Digital Geologic Map Database of Oklahoma: U. S. G. S. Open File Report 03-247
Unit references	Heran, W. D., Green, G. and Stoeser, D. B., 2003, A Digital Geologic Map Database of Oklahoma: U. S. G. S. Open File Report 03-247 Marcher, M.V., and Bingham R.H., 1971, Reconnaissance of the water resources of the Tulsa quadrangle, northeastern Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 2, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by M.V. Marcher, in 1969.) Cederstrand, J.R., 1996k, Digital geologic map of Tulsa quadrangles, northeastern Oklahoma: U.S. Geological Survey Open-File Report 96-380, (2 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology [http://ok.water.usgs.gov/gis/geology/tulsa.html] [http://ok.water.usgs.gov/gis/geology] Marcher, M.V., 1969, Reconnaissance of the water resources of the Fort Smith quadrangle, east-central Oklahoma: Oklahoma Geological Survey, Hydrologic Atlas 1, scale 1:250,000, 4 sheets. (Geology on sheet 1 compiled by M.V. Marcher, in 1967.) Cederstrand, J.R., 1996f, Digital geologic map of Fort Smith quadrangles, east-central Oklahoma: U.S. Geological Survey Open-File Report 96-375, (2 diskettes), URL address is: http://ok.water.usgs.gov/gis/geology [http://ok.water.usgs.gov/gis/geology/ftsmith.html] [http://ok.water.usgs.gov/gis/geology]
Geographic coverage	Adair - Cherokee - Craig - Delaware - Mayes - Ottawa - Sequoyah - Wagoner