Beach sands of the Atlantic coast of the United States, from Charleston, South Carolina, southward to Cape Florida, near Miami, were studied. South of that point they are of small extent and almost wholly calcareous.
Although the primary consideration was the mineral composition, attention was given also to the texture and to the geologic factors which influence the various characteristics. As the gathering of information on mineral composition progressed, it became apparent that the problem of explaining the variations is complex. The writer realizes that the field work and sampling are inadequate to solve the whole problem, and, therefore, this paper must be regarded as a preliminary study.
The sands studied were collected while the writer was in the employ of the Florida State Geological Survey, from 1927 to 1929. The completion of the laboratory work and the preparation of this report was made possible by a grant from . . .