DUNKARD FORMATION 97 



Washington formation: 



Blacksville limestone. 



Washington A coal bed. 



Middle Washington limestone. 



Jollytown coal bed. 



Franklin limestone. 



Canton coal bed. 



Upper Washington coal bed. 

 Greene formation : 



Boyd coal bed. 



Ten-mile limestone. 



Pursley coal bed. 



Rogersville limestone. 



Jollytown limestone. 



Dunkard coal bed. 



Fish Creek sandstone. 



Hostetter coal bed. 



Nineveh limestone. 



Nineveh coal bed. 



Nineveh sandstone. 



Limestone XI. 



Limestone XII. 



Baresville coal bed. 



Jackson limestone. 



Gilmore sandstone. 



Windy Gap coal bed. 



Windy Gap limestone.* 



The Cassville shale (I. C. White, 1891), 5 to 10 feet thick and rest- 

 ing directly on the Waynesburg coal bed, carries an important flora at 

 many places. The type locality is in Monongalia coiinty of "West Vir- 

 ginia, where were obtained the plants described by Fontaine and White. 

 This shale was removed from much of the area during deposit of the 

 overlying Waynesburg sandstone. Limestone is persistent in it within 

 western Washington county and thence across Ohio of West Virginia 

 into Belmont of Ohio, but it is wanting in eastern Washington as well 

 as in Greene and in the small areas of Fayette and Westmoreland. 



The Waynesburg sandstone (J. J. Stevenson, 1872) is persistent 

 around the borders of the area. In Maryland, Westmoreland, Fayette, 

 eastern Washington, and Greene of Pennsylvania, as well as southward 

 to Harrison county of West Virginia, it is a sandstone, usually massive 



* While preparing ttiis description the writer learned that not all of the original note 

 hooks had been lost in the fire which destroyed the state capitol at Harrisburg. By 

 request of Messrs A. S. McCreath and B. V. d'Invilliers, search was made and those 

 covering Greene and 'Washington counties were discovered. By means of these It has 

 been possible to remove some misconceptions due to incomplete publications of sections 

 and to correct some errors of correlation due to rapid preparation of the report on that 

 area. 



