8 
CONTKNTS. 
Stratigraphic geology—Continued. page 
Structure . 140 
Local details .. 140 
Pliocene (?) . 141 
Lafayette formation . 141 
Stratigraphic position . 141 
Lithologic character . 142 
Thickness . 143 
Physiographic expression . 143 
Paleontologic character . 143 
Structure .. 143 
Local details . 143 
Quaternary . 145 
Pleistocene . 146 
Fossiliferous marls . 146 
General . 146 
Local details .. 148 
Gray sand . 152 
Planorbis rock . 153 
Coquina . 153 
Vermetus rock . 154 
Yellow sand . 155 
Stratigraphic position . 155 
Thickness . 156 
Physiographic expression . 157 
Paleontologic characters .;... 157 
Structure . 157 
Recent . 157 
Alluvial deposits . 157 
Lacustrine deposits . 158 
Vermetus rock .. 158 
Beach deposits ....... ‘ 158 
Aeolian deposits . 159 
Chemical deposits . 159 
Human remains . .. 160 
General Geologic History . 162 
TOPOGRAPHY AND GEOLOGY OF SOUTHERN FLORIDA, by 
Samuel San lord. 
Introduction . 177 
Acknowledgments . 178 
Object of Report . 178 
Topography . 179 
General features . 179 
Shape of the land mass. 180 
Features of the mainland. 180 
Pinelands .:.. 181 
Dunes . 182 
Rolling sand plains . 185 
Flat lands . 186 
Rock ridges . 186 
Swamps . 188 
Everglades ..:. 189 
Elevation . 190 
