172 J. J. STEVENSON CARBONIFEROUS OF APPALACHIAN BASIN 



Feet 



6. Sandstone 280 



7. Slate 86 



8. Sandstone 87 



9. Slate 5 



giving 458 for the Lower Pottsville or Crandall's Rockcastle group. As 

 compared with both Lincoln and Dingess, one finds here the lower por- 

 tion of the section gone and the succession the same as that at Warfield, 

 The coal bed number 4 may be the Campbells Creek and number 2 the 

 Winnifrede, the intervals being very nearly those required by Doctor 

 White's identifications at Dingess. 



At 25 miles west of north from the Wayne locality is the record of a 

 boring near Catlettsbiirg, Kentucky, reported by Mr. Campbell, which 

 though giving little of detail, is extremely important as affording the 

 means of comparison with other sections in all directions. It is 



Feet 



1. Clay 40 



2. Sandstone and shale 100 



3. Slate and shells 100 



4. Sandstone 30 



5. Blue slate 1 50 



6. Sandstone [Sharon] '60 



7. Shale 40 



8. Sandstone 80 



9. Shale 35 



10. Sandstone 60 



to the Lower Carboniferous limestone, giving 275 feet for the Lower Potts- 

 ville and 420 feet for the overlying rocks. The especial value of the 

 record is that it shows the whole interval from the Kentucky coal 6 to 

 the Lower Carboniferous limestone to be barely 650 feet, so that in less 

 than half of the thickness of the Lower Pottsville at Nuttallburg, 70 

 miles south of east, one has here the whole Pottsville and a part of the 

 Allegheny. 



Mr Crandall's section at this locality shows Kentucky coal 6 at low- 

 water level, consequently just above number 2 of the record. This, the 

 first coal bed above the Ferriferous limestone, a Kittanning bed, evi- 

 dently the " Lower Kittanning," is 120 feet above Coal 4, the Tionesta, 

 and 50 feet below Coal 7. The interval from Coal 6 to the Sharon sand- 

 stone is somewhat more than 380 feet in the record. It is interesting 

 to observe that the Lower Pottsville is still thick, 275 feet at Catletts- 

 burg, whereas at Hanging Rock, only 10 miles farther down the Ohio 

 river, it is not more, possibly less, than 80 feet. At Ashland, Kentucky, 



