A PRELIMINARY REPORT ON CLAYS OF FLORIDA 
219 
There are isolated occurrences of the sedimentary kaolin lying 
thirty or more miles from any other known deposits. . 
DESCRIPTION 
The deposits themselves consist of a bed of white clay-bearing 
sand, which appears gray in its crude form, ranging from six to more 
than thirty feet in thickness and overlain by a deposit of loose surface- 
sand or soil which varies from six to twenty feet in thickness. Often 
where it has been exposed to weathering, the upper foot or so of the 
clay is stained with iron oxide. The deposit is very frequently cross- 
bedded, but as the stratification and laminations are of the same ma¬ 
terial and color, the cross-bedding is often indistinct. Some of these 
layers are conglomeratic and others have a much higher proportion of 
clay substance than the average. 
The clay-bearing sand is underlain at different times by various 
materials, such as green clay, limestone, flint, fuller’s earth, marl, or 
red-streaked clay. In some localities fuller’s earth is reported to lie 
immediately underneath the green clay. 
U 
Fig. 38. —Removing overburden. Edgar Plastic Kaolin Company, 
Putnam County. Photo by H. Ries. 
