CONWAY COUNTY 59 
2. The limonitic buckshot clays. 
3. The leached clays of the slashes. 
4. The alluvial chocolate clays of the second bottoms along Arkan- 
sas River. 
Clay shales. — The clay shales are interbedded with the sandstones 
and are, in the main, similar in character and distribution to those of 
Faulkner, White, and Pulaski counties. Where they have the proper 
composition they are available for the manufacture of paving bricks, 
sewer pipe, and fire-clay products. No chemical analyses have been 
made of specimens of shales of White County, but the analyses of the 
Round Mountain shales of White County and of the Little Rock 
shales of Pulaski County may be accepted as indicating in a general 
way the character of the clay shales to be found in Conway County. 
Buckshot clays. — The buckshot clays cover a large part of the 
higher valleys of the county. These are used for making common 
bricks, but owing to the presence in them of the buckshot or small 
nodules of iron the bricks are often covered with dark-brown spots. 
These spots are likely to be produced in any well-burned bricks made 
of the buckshot clays. 
Leached clays. — The leached clays are probably only modifications 
of the buckshot clays. Both the leached clays and the buckshot 
clays are derived indirectly from clay shales, and chemically altered 
by weathering and leaching. Where waters charged with organic 
acids stand for a long time in shallow pools in the slash lands, the 
underlying clays are often leached of their iron and made available for 
the manufacture of coarse pottery. Such clays are found in Conway 
County in the wet places on the second bottoms of the Arkansas River, 
Point Remove Creek, and Cadron Creek. 
The alluvial chocolate clays of Conway County are in every respect 
similar in character and topographic position to those of Faulkner 
County. 
Old Lewisburg terrace clay. — At Old Lewisburg, 1 mile south of 
Morrillton, a red clay caps all the elevations. This clay has a maxi- 
mum thickness of about 20 feet and shows four distinctly colored 
beds. As seen at a point 250 yards southeast of the ferry, the expo- 
sures in a deep gully are as follows, beginning at the top: 
Section at Old Lewisburg. 
Feet. 
1. Flesh-colored clay containing much sand 7 
2. Dark-red plastic clay containing a few small siliceous concre- 
tions 4_5 
3. Pinkish clay, with numerous small siliceous concretions 3-4 
4. Yellowish and mottled sandy clay overlying the black shale that 
outcrops along the river south of the ferry 4-5 
The dividing line between these beds of clay is fairly distinct, 
though they grade slightly into one another. Bed No. 2 contains 
