24:2 
GEOLOGY OF NORTH C4R0LINA. 
ore-beds locally. But there will always be a particular part of the forma- 
tion more generally and extensively charged with great quantities of iron 
than the rest. In other words, the iron of the formation as a whole, 
is concentrated along one or more lines. This is evidently the case with 
the Tuscarora Ore Belt, as is shown in the almost perfect straightness of 
the outcrop of the Sergeant Shaft ore bed, where its outcrop has been 
opened for half a mile northeast of the shaft. There are two principal 
beds cropping out on the Teague plantation, at the (southwest) end of the 
belt, both vertical, and about 300 yards asunder.” And not only does the 
number of ore beds vary, but they are often very irregular in position. 
This is illustrated by the following section, revealed “ in a trench, cut at 
right angles to the outcrop, 50 feet long and 4 to S feet deep.” It is on 
the widow McCawisten’s plantation. 
“ Similar irregularities are noticeable everywhere. The miners say 
that the pitch of the outcrop of the ore bed worked in the Sergeant Tun- 
nel and Shaft, was southeast for some distance down, after which it took 
its regular northwest dip, such as it now has in the shaft and tunnel at 
the depth of 100 feet. Besides which, there are in fact two beds cut in 
this shaft-tunnel, the smaller bed underlying the other, and with a dip 
which would carry the two beds together at some distance beneath the 
floor.” 
