THE KANSAS FIELDS 687 



separately. In order to s^'stematize the discussion along definite lines, 

 the writer shall briefly consider the subject by States. 



Kansas 



LOCATION OF THE FIELDS 



The northernmost of the Mid-Continent fields are in the southeastern 

 portion of Kansas and are coextensive with a ])road zone of disconnected 



fields in Oklahoma. The oil-producing formations lie in the Pennsylva- 

 nian series and accumulation has taken place mainly on local structures 

 ah)ng the west flank of the Ozark Arch (see figure 1). 



STRATIGRAPHY 



The following is a general stratigraphic section of rocks in the oil- 

 bearing region of Kansas^ showing the horizons of the principal oil-pro- 

 ducing sands. 



The following general stratigraphic section in the oil and gas region 

 of Kansas is given in descending order : 



Permian series. Peet 



1. Red and gray sandstone strata with beds of red and vari- 



colored shale. Includes salt and gypsum in upper por- 

 tion. Much like Upper Permian in Oklahoma 1,000-1,500 



2. Wellington shale 75- 150 



3. Marion limestone 100- 200 



4. Winfield formation ; limestone and shale 20- 30 



5. Doyle shale 50- > 70 



6. Fort Riley limestone, outcrops at Augusta 40- 50 



7. Florence flint 15- 25 



8. Matfield shale 60r 70 



9. Wref ord limestone 35- 55 



(Base of Permian according to Prosser.) 



10. Neosho formation and Florence shale 140- 150 



11. Cottonwood limestone 5 - 10 



12. Eskridge shale 30- 40 



13. Neva limestone 5- 15 



14. Elmdale formation ; shale and lime 120- 140 



(Base of Permian according to Beede.) 



Pennsylvanian series. 



1. Americus limestone 6- 10 



2. Admire shale, probably includes oil sand at a depth of 



about 650 feet at Eldorado 275- 325 



3. Emporia limestone 5- 10 



4. Willard shale 60- 190 



5. Burlingame limestone 6- 12 



6. Scranton shale 160- 180 



