70 GEOLOGICAL SURVEY OF ALABAMA. 



down the valley. It has been eroded away, and the ends of 

 the Clinton formation covered over by Sub Carboniferous 

 Chert. 



In Seo. 27, T. 12, R. 2, East, this formation comes again 

 prominently to the surface, and the following section was 

 obtained here: 



Section of Clinton Strata. S. 27, T. 12, R. 2, E. 



Top bed. No. 1, round grained, rough ore 4 ft. in. 



Rock soft yellow 3 ft. 7 in. 



2d Bed. No. 2, Fossiliferous ore ft. 3 in. 



3d Bed, not seen, rock and clay 15 it. in. 



4th Bed, or No. 4, blue colored, soft ore 3 ft. in. 



Rock hard 1 ft. 6 in. 



5th Bed (No. 5), soft, dark brown ore 4 ft. in. 



Total Clinton strata 31 ft. 4 in. 



And carrying 11 feet 3 inches of iron ore. From base of 

 5th bed to Black Shale was 50 feet only, while between the 

 4th and 5th bed was a bar of rock 18 inches thick. Below 

 bed No. 5 the rocks were covered up, so that the position of 

 the Clinton to the underlying strata could not be seen. This 

 was probably near the fault line. Only silt and clay covered 

 the surface along the base of the Clinton for some miles. 

 This was the only place, for many miles, that the 5th bed 

 was clearly seen. Nor was it seen, or supposed to exist, in 

 the Red Mountain opposite to this place. But this need not 

 excite surprise ; the ore beds are driven identical on both 

 sides of the valley, at right angles with the strike. 



The Clinton ores on this side of the valley are all con- 

 tained in the long strip of reversed strata heretofore describedy 

 cut off by a deep fault and sunk on the N. W. side. They 

 hence dip to the N. W. at a high angle, usually 30 to 45. 

 Where these ores show close to the line of the fault, they 

 extend under ground but a short distance, only till the fault 

 is reached. In the adjoining section 34 a good show of ore 

 existed a few years ago. A bed four feet thick stood up on 

 the bank of a little stream. It was just at the fault, the 

 stub end of a bed. During a freshet this was undermined 



