370 FH. Bradley—Silurian age of the Southern Appalachians. 
Art. XL.—On the Silurian age of the Southern Appalachians ; 
by Frank H. BRADLEY. 
[Continued from page 288.] 
east dips. The Maryville outcrop of Knox dolomyte is thus 
shown to be the same one met with at Middle Creek and 
vicinity. | 
5. The Marble Belt. 
Three or four miles to the southwest of Dehart’s, on Silver 
Creek, a tributary of the Nantahala, a heavy bed of marble is 
reported, which is supposed to carry silverores. Farther south- 
west, perhaps ten miles from the Little Tennessee, its outcrop 
strikes the main valley of the lower Nantahala, not far below 
the Blowing Spring, and follows it, perhaps four miles, to Red 
Marble Creek, which it ascends to its eri at Red Marble Gap, 
and thence descends Valley River. From the Blowing Spring 
- to the Red Marble Gap the bed shows considerable quantities 
of a bright pink or flesh-colored marble, more or less variegated, 
in a patchy way, with various light shades of green and green- 
ish-white, due mainly to the presence of more or less tale, which 
is sometimes in pieces large enough to make considerable flaws, 
or “dries,” as the marble-workers call them. The value of the 
