EASTERN COUNTIES OF ALLEGHENY PLATEAU 61 



studies of I. C. White farther south under the same axes make clear 

 that much of the great sandstone of the Youghiogheny section is rather 

 to be regarded as Upper Connoquenessing, so that the persistent coal 

 bed under the Connoquenessing of this description is most probably the 

 equivalent of the Quakertown. The Cheat river, flowing northwest- 

 wardly, cuts the Viaduct, Laurel Hill, and Chestnut Hill anticlines in 

 Preston county of West Virginia. Doctor I. C. White studied the sec- 

 tion in the several gaps and his results may be given in reverse order 

 (toward the southeast), that the western condition may be compared 

 directly with that already given for the east side of the Allegheny moun- 

 tains. The Cheat River gap through Chestnut hill is perhaps 15 miles 

 from the National road. The succession on the westerly side of the 

 mountain on Quarry run is 



Feet. Inches 



1 . Sandstone 25 



2. Concealed 40 



3. Massive pebbly sandstone 75 



4. Coal bed 14 



5. Black slaty shale 10 



6. Gray massive sandstone 20 



7. Shales and coal streaks 10 



8. Sandstone 15 



9. Shales with iron ore ... 20 C 



Total J97 



Doctor White places number 9 in the Mauch Chunk ; but in view of 

 the presence of the iron ore, evidently representing the " Big Bottom " 

 bed of Fayette and Westmoreland counties, it is included here with the 

 Pottsville for the sake of uniformity with sections previously given. 

 The Mount Savage coal bed should be in the concealed interval. Doctor 

 White regards numbers 6 and 8 as representing the Lower Connoquenes- 

 sing sandstone, so that the only representative of the Sharon would be 

 in number 9. The little coal bed, number 4, is that which has been 

 observed at so many localities toward the north, where it immediately 

 underlies the second sandstone of those sections, and there is little reason 

 to question the identification with the Quakertown. On the east side of 

 this fold the section is 



Feet. Inches 



1. Sandstone, more or less pebbly 160 



2. Dark shale, plants 10 



3. Coal bed, Quakertown 16 



4. Black fissile shale 15 



5. Concealed 90 



IX— Bull. Geol. Soc. Am., Vol. 15, 1903 



