582 COAL MEASURES OF MARYLAND 



the outcrop of the Conemaugh in Ohio. Condit describes the following 

 sequence in this county:^ 



Ames limestone and fauna, Harlem coal, Pittshurgh red beds, Por- 

 fersviUe limestone and fauna, Anderson coal, Cambridge limestone and 

 fauna. Brush Creek limestone and fauna. Brush Creek [Mason'] coal. 



The section displays the normal sequence, save that the Saltsburg and 

 Buffalo sandstones are absent. The thickness of the section is 145 feet, 

 which is less than that of the eastern sections. 



Muskingum County, Ohio. This area is northeast of Meigs County. 

 Condit describes the following general sequence in this county : ^ 



Ames limestone and fauna, Harlem coal, Ewing limestone, [Saltsburgl 

 sandstone, Anderson coal, [Albright ?] limestone, Cambridge limestone 

 and fauna, Bujfalo sandstone. Brush Creek limestone and fauna. Brush 

 Creek [Mason^ coal. 



The thickness is 150 feet. The section, as sho^vn by Condit, is clear jy 

 the same as the preceding. 



Wheeling, AVest Virginia. I. C. White has described an excellent 

 section furnished by a diamond drill core at Glenova, near Wheeling, 

 West Virginia, in which the following sequence was observed : ^^ 



Ames limestone and fauna, Pittsburgh red beds, Saltsburg sandstone, 

 [Porter^sville] limestone and fauna, coal, [Cambridge] red beds, Brush 

 Creek limestone and fauna. Brush Creek coal. 



The thickness is 210 feet. The section is manifestly a continuation 

 of that described by Condit in Ohio. 



Pittsburgh, Pennsylvania. The following generalized section is based 

 upon a number of local sections described by Eaymond ^^ and upon drill 

 records interpreted by the senior author: 



Ames limestone and fauna, Harlem coal, Pittsburgh red beds, Salts- 

 burg sandstone, coal, Cambridge limestone and fauna, Meyersdale red 

 beds, Buffalo sandstone. Brush Creek limestone and fauna. Brush Creek 

 coal. 



The thickness is 205 feet. The section embraces the standard ele- 

 ments of the western area and adds to them the Meyersdale red shale, 



s D. D. Condit : Conemaugh formation in Ohio. Bull. 17, Geol. Survey Ohio. 1913, p. 

 92. See plate of columnar section. The members are enumerated in descending order 

 in all the following sections. 



D. D. Condit : Conemaugh formation in Ohio. Bull. IT. Geol. Survey Ohio. 1913. p. 

 146. Names in brackets [ ] added by senior author. 



10 I. C. White : Report on Ohio, Brooke, and Hancock counties. W. Va. Oeol. Survey, 

 1906. pp. xii-xv. The names of members in brackets [ ] are supplied by the senior 

 author. 



" Percy Raymond : Ann. Carnegie Mus.. vol. v. 1908-1909. p. 173 et seq. 



