112 CEMENT MATERIALS AND INDUSTRY. [hull. 243 
Saline Landing una. 
10. Saline Landing, Howard County, Ark. Sec. 35, T. 11 S., R.28 W., from the middle of the chal 
bluff. 
11. NW. corner of the NE. \ of SW. i sec. 30, T. 11 S., R. 27 W. White chalk from very near th 
top of the chalk formation. 
12. Near the center of the SE. I of SW. * sec. 21, T. 11 S., It. 27 W., from near the middle of th 
white chalk. 
VS. Near the base of the knob 1 mile N. 15° E. from Saratoga, Ark. Chalky blue marl 100 fei 
above the top of the white chalk. 
14. Near the center of the east side of the SW. ± of NW. } sec. 22, T. 11 S., R. 27 W., from the lowe 
part of the white chalk. 
Washington avi a. 
15. North cut on the railroad, about 3 miles north of Washington, Ark. Chalky blue marl in fe< 
below the base of the Saratoga chalk-marl. 
16. Middle cut on the railroad, about 2^ miles north of Washington, Ark., from the center of th 
cut in the lower part of the Saratoga chalk-marl. 
17. South cut on the railroad, about 2 miles north of Washington, Ark., from the green sand ma 
in the center of the cut. 
18. SE. 1 sec. 25, T. 10 S., R. 25 W., head of Morisett ditch, from bluish chalky marl, about 150 fet 
below the Saratoga chalk-marl. 
Okolona area. 
19. Forks of road, 1| miles south of Okolona, Ark., from middle of Saratoga chalk-marl. 
20. SE. I sec. I, T. 9 S., R. 22 W., about £ mile southwest of Okolona, from sandy marl bed at bas |>f 
of the Whitecliffs chalk formation. 
21. 2\ miles south of Okolona, on the Mat. Hardin place, from the lower 15 feet of the Saratog \ 
chalk-marl. 
22. Same locality as 21. Saratoga chalk-marl 16 feet above the base. 
23. SE. \ sec. 4, T. 9 S., R. 22 W., about \\ miles south of Okolona, yellowish chalky marl aboi 
midway between the Whitecliffs and Saratoga formations. 
Decipt r an a. 
2 1. I. L. Bozeman's place, f mile northeast of the house, in the NW. £ of sec. 28, T. 7.S., R. 20 W 
from the bluish chalky marl 4 feet below the base of the Saratoga chalk-marl. 
25. Same locality as 21. from Saratoga chalk-marl 10 feet above the base. 
26. Little Deciper Creek at Okolona-Arkadelphia road, from Saratoga chalk-marl about 10 fe 
above the base. 
TERTIARY AND CARBONIFEROUS CLAYS AND SHALES. 
The information below on clays is from a publication on Cemer 
Materials of Southwest Arkansas, by Doctor Branner." 
In no case are the surface clays found in the immediate vicinity c 
the chalk deposits to be depended upon. Such clays are, as a ruli 
too sandy, and are not of uniform composition. Reference is hei 
made especially to the sandy clays overlapping the chalk beds to tt 
north and east of Rocky Comfort, and the clays of the bottom lane 
south and west of Whitecliffs, and those south, north, and west of tt 
chalk exposures at Saline Landing. Fortunately the Tertiary rod 
which- overlap the Cretaceous ones to the south and east contain a 
abundance of excellent clays available for the manufacture of cemen 
Some of these clay beds are utilized for the manufacture of pottery i 
Benton and Malvern (Perla switch). There are many other deposi 
on and near the railway about Arkadelphia, Malvern, between Ma 
vern and Benton, between Benton and Bryant, at 01 sens switch, ar 
at Mabelvale. At Little Rock there are extensive beds of both cla^i 
and clay shales, while beds of shale may be found along the line of tl 
Little Rock and Fort Smith road to Fort Smith and beyond. 
The Tertiary clays at Benton, Bryant, Olsens switch, Mabelvale, an 
Little Rock are all nearly horizontal beds, dipping gently toward tl 
southeast. The}^ can be had in many places by stripping off a few f e | 0II 
of post-Tertiary gravel and soil; but in places the covering is too thi< 
to be removed, and the clays can be obtained only by a system of drift 
a Trans. Am. Inst. Min. Eng., vol. 27, 1897, pp. 42-63. 
