CORRELATION 583 



which is widely distributed farther east. These sections show the exteri- 

 sion of this series eastward to Pittsburgh. Many more sections couJd 

 be added if desired. 



Sections of critical series of the Lower Conemaugh from Pittshurg'ti, 

 Pennsylvania, to Maryland via West Virginia. — Two routes now present 

 themselves by which the beds can be traced from Pittsburgh to Marylanr], 

 one passing through West Virginia, the other through Pennsylvania. 

 The sections on the route through West Virginia will first be considered 

 and afterward those connecting Pittsburgh and Mar3dand via western 

 Pennsylvania. 



Morgantown, Monongalia Count}^, West Virginia. I. C. White and 

 his associates described an excellent section at Morgantown, West A^ir- 

 ginia/^ which comprises all the more significant members of the series 

 in their normal sequence, save that the Brush Creek coal was absent 

 in the drill record cited, though present in the vicinity. It comprises 

 the following : 



Ames limestone and fauna, Harlem coal, Ewing limestone, Pittslturgh 

 red beds, Saltsburg sandstone, coal, [Oamhridge] red beds, Cambridge 

 limestone and fauna, \_Meyersdale] red beds, Buffalo sandstone. Brush 

 Creeh limestone and fauna. Brush Creeh coal. 



The thickness is 195 feet. The section is in manifest agreement with 

 that at Pittsburgh, Pennsylvania. 



Preston County, West Virginia. I. C. White and his associates de- 

 scribed the following section in western Preston County,^^ 18 miles south- 

 east of the preceding : 



Ames limestone and fauna, Harlem coal, Eioing limestone, Pittsburgh 

 red beds, Saltsburg sandstone, coal, Albright limestone, Cambridge lime- 

 stone and fauna, [Meyersdale] red beds, Buffalo sandstone, Brush Creels 

 limestone and fauna. Brush Creelc coal. 



The thickness is 200 feet. This section evidently embraces the same 

 units as the preceding. 



We have now traced the critical series of beds containing marine 

 faunas in the lower Conemaugh from Meigs County, Ohio, to Preston 

 County, West Virginia. The number of the sections described is small, 

 but the list could have been greatly extended if desired. It is sufficient, 

 however, to show the persistence of the beds under consideration, and 



" I. C. White, R. V. Hennen, D. B. Reger i Geology of Marion, Monongalia, and Taylor 

 counties. W. Va. Geol. Survey, 191?>, p. 116. 



" I. C. White. R. V. Hennen, and D. B. Reger : Geology of Preston County. W. Va. 

 Geol. Survey. 1914. Section at Newberg, Lyon district, p. 90, and general section, pp. 

 113-114. 



XL — Bull. Geol. Soc. Am., Vol. 30. 1918 



