kel.J GEOEGIA. 
Analyses of Chickamaugd limestones from Georgia. " 
129 
lica (SiO s ) 
umina (A1 2 3 ) 
)n oxide (Fe 2 3 ) 
ne carbonate (CaC0 3 ) 
ignesium carbonate (MgC0 3 ) 
« 
- 
:; 
2. 82 
8. 16 
1 1.80 
2. 23 
9. 50 
91.40 
94.37 
55. 17 
3. 75 
2.10 
25.33 
2.30 
.40 
95. 20 
2. 17 
South of Trenton, Polk County. J. M. McCandless, analyst. 
Cedartown, Polk County. W. J. Land, analyst. 
Near Trenton, in valley of Lookout Creek. J. M. McCandless, analyst. 
Devitte lime quarry, 5 miles northeast of Rockmart, Polk County. Chemist, Cherokee Iron Com- 
ly, analyst. 
BANG R L TM ES TONE. 
DISTRIBUTION. 
The Bangor limestone in Georgia occurs only in Dade, Walker, and 
northwestern portion of Chattooga counties. In this area it 
pears as a series of belts from one-half to almost 2 miles in width, 
lowing closely the trend of Sand, Lookout, and Pigeon mountains, 
d usually running up high on the Hanks of these mountains, as well 
occupying parts of the valleys at their feet. 
COMPOSITION. 
The Bangor limestone in its Georgia areas varies between 700 and 
) feet in thickness. The greater part of this is a rather heavy - 
ided blue limestone, commonly quite pure and low in magnesia, 
ward the top of the formation the limestone becomes more clayey, 
I interbedded shales become more and more frequent. 
Analyses of Bangor limestone from ( Georgia. 
ca(Si0 2 ) 
mina ( A1 2 3 ) 
n oxide (Fe 2 3 ) 
le carbonate ( CaC0 3 ) 
fjriesium carbonate (MgC0 3 ) 
0.95 
1. 00 
96. i:; 
2.05 
12. 70 
3.20 
80.60 
2. 45 
Rising Fawn, Dade County, J. M. McCandless, analyst, " Paleozoic Group of Georgia," p. 271. 
Side of Sand Mountain, Polk County, J. M. McCandless, analyst. Ibid., p. 271. 
'aken from a report by Prof. J. W. Spencer on the " Paleozoic Group of Georgia," issued by the 
•gia Geological Survey. The composition of No. 3 is very different from that of normal Chicka- 
ga limestones, and its reference may therefore be erroneous. 
Bull. 243—05 9 
