1871.] 141 [Lesley. 
Fig. 3 is a special map of the ore-belt where it passes the Tuscarora 
forges, and has been most thoroughly tested. Here is the Sergeant shaft. 
The accompanying section will be of use, as it furnishes a carefully 
measured example of the numerous hill slopes which compose the surface 
of the country. 
Fi fr Sk i | 
\ Superintendant’s 
\ Re this 
\ ia=t 
> 
! “Engrhe house 
Sergeant Shy 
Thal trends t 
: Fe 
ae INES ee + = 
ais 
ae 
RS 
; SHE 
Old shaft. Approximalely accurale profile along ine AB: 
Ad. 107 fest 00 fret 
ana ua ‘ Mw 
i Seale 200 42 ca the incl ¢ (ean 3 or fog 
1th 
fazo (N00 seek 50 fF i yee ts yer 
‘PR Figs. 4and 5 continue the mapping of the ore-belt on to the head-waters 
of Deep River, to the southwest ; and to the northeast as far as the Haw 
| River. The general straightness of the outcrop for 15 miles, and more, is 
remarkable. The whole length surveyed was about 30 miles. 
This part of North Carolina is occupied by some of the oldest rocks 
known; the same rocks which hold the iron ore-beds of Harford Co., 
Md., and Chester Co., Pa., and the gold ores of Georgia, North Carglina, 
Virginia, and Canada. The gold mines of Guilford Co., N. C., are opened 
alongside of, and not more than ten or twelve miles distant from, the 
Tuscarora iron ore-belt. See figure 2 above. Both the gold and iron 
range continuously with the exception of one break, in New Jersey, 
from Quebec, in Canada, to Montgomery, in Alabama. The gold 
and iron-bearing rocks are : granites, gneissoid sandstones, and mica slates, 
all very much weathered and decomposed ; and that to a depth of many 
