CKEL.] 
GEORGIA. 
127 
Four series of limestones occurring in Georgia are worth consider- 
tion here. Beginning with the oldest formation, these four are: 
1. Metamorphic limestones (marbles) of uncertain age. 
2. Chickamauga limestone of Ordovieian (Lower Silurian ) age. 
3. Bangor limestone of Mississippian (Lower Carboniferous) age. 
4. Cretaceous and Tertiary limestones (so-called "marls"). 
The distribution of these limestones in the western portion of the 
tate is shown on the geologic map, PL U. 
METAMORPHIC LIMESTONES OR MARBLES.a 
DISTRIBUTION. 
Highly crystalline limestones, suitable for use as marble, occur in 
arts of northern Georgia, notably in the counties of Fannin, Gilmer, 
ickeris, and Cherokee. The principal outcrops in this district occur 
i a belt closely parallel to the line of the Murphy and North Georgia 
ailroad, extending from near Canton northward to the Georgia- 
orth Carolina line. Throughout the 'entire extent of this belt the 
larble has been quarried more or less extensively. 
COMPOSITION. 
As shown by the analyses quoted by S. W. McCallie, two quite 
istinct types of marble occur, so far as chemical composition is con- 
M'ned. One of these types rarely carries over 1 per cent of mag- 
3sia, and is therefore available as a Portland-cement material. The 
mlyses given in the following table are fairly representative of this 
:pe. The other type of marble carries 15 to 22 per cent of magnesia, 
id is therefore not worth considering in the present connection: 
Analyses of metamorphic limestones from Georgia. 1 ' 
lica (Si0 2 ) 
lamina (A1 2 3 ) , 
•on oxide ( Fe 2 ;i ) . . . 
ime (CaO) 
agnosia (MgO) 
arbon dioxide (C0 2 ) 
1 
2 
3 
4 
0.35 
1.62 
2.12 
1 . 43 
I •» 
.32 
.10 
3.28 
55. 00 
54.41 
54. 06 
52.77 
1.12 
.75 
. 90 
.82 
44.16 
43.13 
42.86 
41.85 
0.76 
.42 
54. 67 
1.01 
43. 49 
1. "Creole" marble, Georgia Marble Company's quarry, near Tate, Pickens County, 
2. " Etowah " marble, Georgia Marble Company's quarry, near Tate, Pickens County. 
3. Coarse white marble, Georgia Marble Company's quarry, near Tate, Pickens County. 
\. Haskins property, 1 mile southeast Red Clay, Whitfield County. 
5. Ellinger property, 1 mile east Varnells station, Whitfield County. 
a The composition, character, and distribution of these valuable building stones are described in 
ulletin No. 1, of the Georgia Geological Survey, by S. W. McCallie, entitled " Preliminary Report on 
ie Marbles of Georgia," To this bulletin reference should be made for details concerning the crys- 
lline limestones of Georgia. 
b Analyses 1 to 5 of the table are from the report by Prof . S. W. McCallie on the "Marbles of Georgia," 
sued as Bulletin No. 1 of the Georgia Geological Survey. All these analyses were made by Prof. 
I H. Emerson. 
