A PRELIMINARY REPORT ON CLAYS OE ELORIDA 
145 
exposure is to be seen. There are two bluffs, each about 500 feet long 
and 65 feet above the river. The northern bluff is termed the Upper 
Bluff and the southernmost one the Tower Bluff. A generalized section 
made at the lower end of the Lower Bluff is as follows: 
Generalized. Section near South End of Lower Dexland Bluff. 
Sand, cross-bedded with some clay lentils (Pleistocene). 30-35 feet 
Unconformity, ercsional, separating Citronelle formation from 
Pleistocene .... 
Clay, gray sandy. 10-15 feet 
Clay, red, very plastic (Dexland No. 2, Lab. Sample No. 0-18). 6-8 inches 
Sand parting . 1-2 inches 
Clay, gray, very plastic (Dexland No. 3, Lab. Sample No. 0-13). 2-4 feet 
Sand, cross-bedded, containing coarse quartz pebbles. ? 
In this section Dexland clay No. 2 (Lab. Sample No. 0-18) very 
closely resembles the red clay at Gull Point (Gull Point No. 3, Lab. 
Sample No. 0.31), but contains a slight amount of sand. 
The Upper Dexland Bluff has essentially the same section as the 
one just given, with an additional stratum about six feet above the river 
level consisting of a black plastic clay about six inches in thickness (Dex¬ 
land No. 6, Lab. Sample No. 0-25). 
At the upper end of the Lower Dexland Bluff is a ten-foot exposure 
of a gray mottled plastic clay (Dexland Nb. 1, Lab. Sample No. 0-82) 
which is probably the same as the Barrineau Bros, clay at Quintette 
(Lab. Sample No. 0-68) only six or seven miles farther up the river. 
It is here, however, not associated with limonite. 
The qualities of these clays are similar, but their raw color, which 
is lost in firing, is variable. These clays are desirable for terra-cotta, 
stoneware, some grades of pottery and roofing tile. 
From a commercial point of view, however, the clays exposed on 
Escambia Bay and at Dexland Bluff, on the Escambia River, offer very 
little. The beds are thin and variable and are overlain by a heavy over¬ 
burden which is as much as forty feet in places. Some of these clays are 
now being used in a small pottery in south Florida which specializes in 
ornamental articles. The amount of clay needed for this kind of demand 
is not great and can be procured at natural exposures without extensive 
excavation. 
Gull Point Clay No. 1, the gray jointed clay uppermost in the sec¬ 
tion and overlain by only about two feet of soil, has the following physi¬ 
cal properties: 
