880 F. H. Bradley—Silurian age of the Southern Appalachians. 
banded with thin layers of quartz and hornblendic gneiss. As 
weapproach the synclinal, disturbed dips again appear, We here 
reach nearly the horizon of the marble, but pass the synclinal 
axis without its appearance, about a mile west of the Chestatee 
River, which we cross near Robbins’s mill. Dips of S. 25°-4 
E., in gneisses and schists, continue until we have passed Cross- 
ville, Smithville and Barretsville, and have crossed the Etowah 
at. Leadbetter's Ford. Somewhere in this s space the marble 
must occur; but it was not seen in passing along the road. 
About twelve miles south of asper, we reach the line of 
dips. or the next four miles northward, the rocks are mainly 
hydromica schists and gneisses, wit quartz and granite veins. 
crops, which pass south of P Murphy The Ries shale appears 
to have been locally wanting, since heavy-bedded gneisses, 
wiciats we must refer to the underlying sandstones, show con- 
siderable thickness along the western border of the Swamp; 
ut fine-grained mica slates occur near this horizon, from two 
to four miles north of Jasper. Hence to Duckstown, we fol- 
low nearly the general line of strike, and pass over pretty 
continuous lines of gneisses and schists with variable south- 
belt. The copper is on the left of the road, but has not been 
exploited, I believe, at any point south of the Mobile Mine, 
in Fannin County, five miles from Ducktown, where there were 
extensive works before' the war, which are now in ruins. 
To the southwestward, the copper-bearing strata appear, in 
Harraldson, Paulding and Carroll Counties, with nearly the 
regular northeast strike, but apparently broken up by faults, 
so as to show three approximately parallel lines of outcrop, 
