694 J. H. GARDNER THE MID-CONTINENT OIL FIELDS 



Feet 



6. Dewey limestone 15- 25 



7. Skiatook formation ; sandstone, shale, and thin limestone 



beds. Includes Hogsliooter limestone and Layton oil 



sand 350- 400 



8. Lenapah limestone 10- 20 



Tulsa group : 



1. Nowata shale ; includes the Wayside oil sand and its cor- 



relations 75- 150 



2. Oolagah limestone or "Big Lime" of the drillers 20- 50 



3. Labette shale (local coal bed, Dawson coal) 75- 100 



4. Claremore formation. Sandstone, .shale, and beds of thin 



limestone. Contains at the base the Fort Scott or Os- 

 wego limestone. Includes the Cleveland and Peru oil 



sands 275- 350 



Muskogee group : 



Beds of shale, sandstone, and thin limestone correlating 

 with the Cherokee shale (Boggy and Winslow forma- 

 tions at Muskogee). Includes the main oil sands of 

 Oklahoma; the Red Fork, Bartlesville, ( Glenn ), Tucker, 

 Taneha, Booch, Morris, and Muskogee sands, the latter 

 lying at the unconformable base of the Pennsylvanian 

 series 450-1,500 



( Unconformity. ) 



Mississippian series. 



1. Morrow limestone 100- 200 



(Unconformity.) 



2. Pitkin limestone 40- GO 



3. Fayetteville formation. Sandstone, shale, and limestone. 



Contains the Mounds oil sand and a deep sand near 



Sapulpa 20-200 



( Unconformity. ) 



4. Boone formation. Massive white limestone and massive 



beds of chert 200- 400 



Devonian system. 



1. Chattanooga formation. Black fissile shale 30- 50 



2. Sylamore sandstone ; clear quartz sandstone 0- 25 



(Unconformity.) 



Onlovician system. 



1. Tyner formation; thin sandstone and limestone in shale. 60- 100 



2. Burgen (St. Peter) sandstone; massive quartz sandstone. 5- 100 

 Camhrian system. 



Massive limestone beds shown in Harrington well at 



Joplin, Missouri 1,165 



The lower portion of the Pennsylvanian series and older rocks thicken 

 in the southeast portion of Oklahoma at the rate of appropriately 100 

 feet per mile from Muskogee southward. The following is the general 

 section for the McAlester-Coalgate- Atoka region. 



