ACKNOWLEDGEMENTS I express sincere gratitude to Dr. Paul Ragland for his guidance throughout the course of this study as well as his critical review of the manuscript. I am also thankful for the critical reviews of Part One of this study by Dr. Laura Cummins, Dr. David Whittington and Steven Campbell. Dr. Barry Cohn (Standard Oil) and Dr. Roy Odom were helpful in providing geochronologic data for this study. As the basement geology section expanded from two paragraphs into Part Two of this report, I am very thankful for the encouragement, patience and input from Dr. Thomas Scott and Dr. Walt Schmidt. I am also very grateful for the critical review of Part Two by Dr. Jim Tull, which along with fruitful discussions on Florida basement geology with Paulette Bond, Jackie Lloyd and George Winston (Petroconsultants, Ltd.), led to a more comprehensive and meaningful manuscript. David Allison is thanked for developing and providing computer graphics software used in this study as well as his technical assistance in customizing and running the programs. Special thanks are extended to Jim Jones, Ted Kiper and Melissa Doyle for preparing figures for this study and the associated Geological Society of America presentation (Arthur, et al., 1988), and to Cindy Collier for typing the manuscript. Finally, I gratefully acknowledge those staff members of the Florida Geological Survey who reviewed the manuscript: Ms. Paulette Bond, Mr. Ken Campbell, Dr. Ron Hoenstine, Mr. Ed Lane, Ms. Alison Lewis, Ms. Jacqueline Lloyd, Ms. Joan Ragland, Mr. Frank Rupert, Dr. Walt Schmidt, Dr. Thomas Scott, Mr. Steve Spencer and Mr. Bill Yon. A cooperative agreement between the Florida Geological Survey and the Department of Geology at Florida State University enabled all of the analytical work for this study to be completed quickly, efficiently and cost-effectively. Loss on ignition analyses were completed by Don Harris. viii