STATE OF FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION David B. Struhs, Secretary DIVISION OF RESOURCE ASSESSMENT AND MANAGEMENT Edwin J. Conklin, Director FLORIDA GEOLOGICAL SURVEY Walter Schmidt, State Geologist and Chief OPEN-FILE REPORT 80 TEXT TO ACCOMPANY THE GEOLOGIC MAP OF FLORIDA Thomas M. Scott, P.G. #99 FLORIDA GEOLOGICAL SURVEY Tallahassee, Florida 2001 ISSN 1058-1391 .Aftg'