CONTENTS 
Page 
Location, Area and Mineral Industries 79 
Climate : 79 
Vegetation 80 
Elevations 80 
Levels on Louisville and Nashville Road 82 
Mineral^ Industries 83 
Brickmaking Clays 83 
Limestone , t 84 
Phosphate 84 
Road Material ; 84 
Sands and Gravels 84 
Water Supply 85 
Springs 85 
Topography and Geology 86 
Rivers : 86 
Dead Lakes of Chipola River 86 
Description of Formations 88 
Eocene 88 
Claiborne Formation 1 88 
Structure 89 
Ocala Formation 89 
Structure 89 
Oligocene 90 
Marianna Formation 90 
Structure 90 
Chattahoochee Formation 90 
Structure 91 
Miocene 91 
Alum Bluff Formation 91 
Structure 92 
Choctawhatchee Formation 93 
Structure 93 
Miocene-Pliocene ? 94 
Sands and Gravels r 95 
Topographic and Physiographic Development 95 
Summary 97 
Structural Conditions Between Choctawhatchee and Aucilla Rivers 98 
Contours on the Chattahoochee Formation 99 
Contours on the Alum Bluff Formation 99 
ILLUSTRATIONS. 
Fig. 7. Chipola River 102 
Fig. 8. Sink South of Chipley 102 
MAP. 
Sketch Map, Between Choctawhatchee and Aucilla Rivers 80 
