376 FE. H. Bradley—Silurian age of the Southern Appalachians. 
calcareous mica schist forms another high ridge, which comes 
sharply to the river bank on both sides. Those two belts of 
marble are apparently broken off toward the northeast, though 
each has been traced some distance into the mountains, by 
lines of sink-holes. They probably reach the more southern 
branches of Vengeance’s Creek, but do not appear on its more 
northern ones. ‘Their southwestern continuations have not 
been traced continuously ; but outcrops of marble, representing 
one at least and probably both, occur on Notla River, about at 
the State line. The marble of Jasper, Pickens County, Ga., is 
probably on the continuation of one of these belts. 
In passing on up Brasstown Creek, we find principally mica 
and hydromica slates and schists, with many staurolites and 
small garnets, and increasingly numerous quartz veins which, 
as we approach the Georgia line, become pyritous and frequently 
auriferous. On both sides of the line, veins rich in gold have 
een opened, though none has yet been extensively wor 
Two small stamp-mills are now running, in this neighborhood. 
In some of these veins, argentiferous: galenite occurs in consid- 
erable quantities. 
Somewhere near this point, both Emmons and Kerr indicate 
a great fault, separating the so-called ‘ Taconic” or *‘ Huronian,” 
on the northwest, from the ‘Azoic” or ‘ Laurentian,” on the 
ing found any appearance of unconformability or any ver 
plorations, I am not sure that this may not mark an approach to 
another series of rocks; but the character of the material does 
not indicate this, and I am inclined to believe that the north- 
easterly dips are only local, and that the limestone reported by 
Dr. Curtis as existing in considerable quantity on the western 
slope of the Cowee Mountains, about eight miles east of Frank- 
lin, is really the southeastern edge of the synclinal of which 
the Nantahala and Valley River outcrop is the northwestern. — 
At least, I have found no definite boundary to the Silurian in 
this direction. . 
f there are any non-Silurian beds in this region, they are 
those which form the higher portions of the Valley River 
