i62 J. J. STEVENSON— CARBONIFEROUS OF APPALACHIAN BASIN 



Rogers refers to it as occurring in separated masses farther down the 

 river, on Rider and Hughes creeks, where it underlies yellow shales with 

 nodular iron ore. 



The variability of the interval between the " Campbells Creek" and 

 Eagle coal beds is shown by the following measurements by Doctor 

 White at Cannelton and Brownstown, 16 miles apart: 



Feet. Inches. Feet. Inches 



1. Campbells Creek coal bed 



2. Sandstone and shales 40 74 



3. Broivnstown coal bed and partings 20 6 2 



4. Shales and sandstone 40 70 



5. Limestone . 1 1 



6. Shales 10 45 6 



7. Eagle coal bed and partings 26 2 3 



Total 137 8 195 6 



At Brownstown the Eagle coal bed is 98 feet above the Nuttall sand- 

 stone, but at Armstrong creek the vertical distance is 290 feet. Three 

 miles below Brownstown, 6 miles above Charleston, the whole interval 

 from Campbells Creek coal bed to the Nuttall is but 132 feet, a decrease 

 of 34 feet per mile. The contrast between conditions above and below 

 the Eagle at Armstrong and Brownstown is worthy of notice ; for while 

 the interval to the Nuttall decreases almost two-thirds in 16 miles, that 

 above to the Campbells creek increases almost one-half. The Browns- 

 town coal bed is unimportant and disappears at a little way below the 

 Brownstown locality. 



The Campbells Creek coal bed is one of the most persistent as well as 

 most variable beds in the formation. Like the coals below, it is a soft 

 coking coal, showing no splint, except a thin streak in one of its divis- 

 ions. On Gauley mountain, in Fayette county, near the eastern out- 

 crop, it is 11 feet thick, with thin partings. On Armstrong creek, in 

 Fayette, it is in six benches, distributed through 22 feet 4 inches, and 

 the top of the bed is 568 feet below the Black Flint. Near Cannelton, 3 

 or 4 miles lower down the river, Doctor White's section shows the lower 

 portion of the bed 5 feet thick at 541 feet below the Flint, with the over- 

 lying 500 feet concealed. The bed here was described by Professor 

 Rogers as Stockton's 7-foot seam. Mr Ridgway's section at the same 

 place, made upward of sixty years ago, when exposures were almost 

 complete, shows the bed in seven benches, distributed in 85 feet of ver- 

 tical section, the thick coal at the bottom being at about 550 feet below 

 the Flint. At Coal valley, a short distance lower down the river, the 

 interval to the thick coal at the bottom is 640 feet. Professor Ansted's 



