PETROLEUM AND NATURAL GAS. 



The Oil and Gas Horizons of West Virginia. 



Monongahela Series 

 Conemaugh Series 



Allegheny Series 



Pottsville Series 



Mauch Chunk Red Shale 

 Greenbrier Limestone 



Pocono Sandstones 



Catskill Red Beds 

 Chemung and Portage Beds 



| Carroll Sand (Uniontown) 



[Minshall Sand (Connellsville) 



I Murphy (Morgantown) 



J Moundsville Sand (Saltsburg) (Buffalo) 



| First Cow Run (Little Dunkard) Sand 



; Big Dunkard Sand (Mahoning) 



( Burning Springs (Upper F'reeport) 

 [ Gas Sand (Lower Freeport) 



[ Gas Sand of Marion and Monongalia 

 Counties (Homewood), Second Cow 

 Run of Ohio 



| Gas Sand of Cairo 



j Salt Sand of Cairo 



j Cairo? 



| Gas Sand of Rosedale 



[Salt Sand of Rosedale 



j Maxton, Dawson, Cairo 

 [ Little Lime 



| "Big Lime," not generally productive 



f Keener Sand and Beckett Sand of Mil- 



| ton 



J Big Injun Sand 



] Squaw Sand 



j Weir Sand 



[ Berea Sand 



[ Gantz Sand 



| Fifty-foot Sand 



| Thirty-foot Sand 



| Gordon Stray Sand 



-j Gordon Sand 



| Fourth Sand 



McDonald or Fifth Sand 



Bayard or Sixth Sand 

 j Elizabeth or Seventh Sand 



f Warren First or Second Tiona, Speech- 

 's ley Sand. No well defined oil or gas 

 [ horizons yet discovered in West Va. 



To this classification as originally given by Hennen in 

 the Report mentioned, the writer has added the Gas and Salt 

 Sands of Rosedale, the Little Lime and the Weir Sand of the 

 rocono Series, described by Krebs as being productive in the 

 Blue Creek Field of Kanawha County. 3 In Lewis and Gilmer, 



8 C. E. Krebs, Kanawha Report, W. Va. G. S., p. 302; 1914. 



