SECOND ANNUAL REPORT'—EUEEERS EARTH. 267 
ley. At the present time the river strikes the east bluff at three points 
known as Aspalaga Bluff, Rock Bluff, and Alum Bluff. An excellent 
natural section is obtained at each of these three points. At Chatta¬ 
hoochee Landing near the north line of the State the river channel 
approaches within about one-fifth mile of the bluff. A good section 
is obtained along the public road leading down to this landing. 
The measurements of the following sections have been checked, 
and are believed to be accurate within the limits necessary for correla¬ 
tion purposes. On March 5, 1909, the gauge on the railroad bridge 
at River Junction read 7J4 feet. As a matter of convenience and to 
facilitate comparison, the measurements of all sections are' given as 
of this stage of the river. 
Section at Chattahoochee Landing. 
The section at Chattahoochee Landing is made along the public 
road leading from Chattahoochee to the river. The exposure begins 
about one-fifth mile from the river, and is measured along the public 
road a distance of perhaps somewhat more than one-fourth mile to 
the top of the plateau. In the lower part of the section while crossing 
the Chattahoochee limestone the road runs in a direction northwest to 
southeast. At the top of this first part of the hill the road turns almost 
at a right angle to the northeast, again turning east as the top of the 
last hill is reached. 
12. Rich red sand containing, especially to¬ 
ward the base, an abundance of 
siliceous pebbles, light colored or 
stained brown by iron. The sand 
becomes coarser toward the bottom. 
Feeble cross bedding and stratifica¬ 
tion is seen. A layer of iron concre¬ 
tions occurs 13 feet from the base, or 
Thickness 
of stratum. 
Height above river 
(stage of Mar. 5, 1909). 
11. 
15 feet from the top.. 
Pinkish and purple sandy clays in hor¬ 
28 
feet 
154 
to 
182 
feet. 
izontal position .. 
9 
feet 
145 
to 
154 
feet. 
10. 
Covered and sloping .. 
42 
feet 
103 
to 
145 
feet. 
9. 
Marly limestone . 
4 
feet 
99 
to 
103 
feet. 
8 . 
7. 
Covered and sloping. 
Light colored clayey limestone, with 
14 
feet 
85 
to 
99 
feet. 
clay inclusions near the top. 
26)4 feet 
58)4 to 
85 
feet. 
6 . 
5. 
Sandy pale yellow limestone. 
Lime clay stratum similar in character 
4 
feet 
54)4 to 
58)4 
feet. 
to that found at Aspalaga Bluff, the 
top of which in that section lies at 
the north end of the bluff 19^4 Ret 
above the river at same stage of 
water . 
3^4 feet 
50^4 to 5454 feet. 
