CENOZOIC. 
THE SOILS OF FLORIDA. 
9 
TABLE OF GEOLOGICAL FORMATIONS IN FLORIDA. 
Period. 
• 
Formation. 
Lithologic Description 
of the Formation. 
Recent. 
Sand dunes. Shell mounds. 
Beach Sands. Coquina. Lacus¬ 
trine deposits. Chemical depos¬ 
its. Alluvial deposits. Muck and 
Peat. Residual material. 
Pleistocene... 
Anastasia formation. 
Palm Beach limestone.... 
1 
Miami oolite. 
Key Largo limestone..... 
Key West oolite. 
Lostmans River limestone 
Unclassified clayey sandsi 
and sandy clays of Plio-j 
cene or Pleistocene age. 
Coquina. 
( Light colored limestone, with 
l sandy beds and loose sand. 
( Light gray to white oolitic 
) limestone, sandy in places. 
Coralline limestone; reef rock. 
( Light gray to white oolitic 
/ limestone. 
( Dark to light, hard to friable 
< limestone, sandy or marly in 
( places. 
Pliocene. 
Dunnellon formation. 
Bone Valley gravel. 
Alachua clay. 
Nashua Marl.. 
Caloosahatchee marl. 
Hard rock phosphate. 
^ Light colored gravel and mar 1 
l containing phosphatic pebbles. 
( Greenish sandy clay, weather- 
1 ing yellow or red. 
Light colored sandy shell marl. 
Light colored sandy shell marl. 
Miocene. 
Choctawhatchee marl (W. 
Florida and St. Johns 
Valley) 
Jacksonville form a t i o n 
(East Coast) 
( Greenish to light gray sandy 
< shell marl or greenish gray 
( clay. 
r Light gray to white limestone, 
1 weathering light yellow. Light 
] gray to yellow clay and gray 
l, sand. Some chert beds. 
Oligocene. 
Alum Bluff formation.... 
Hawthorne formation 
(Central Florida). 
Chattahoochee formation 
(West Florida). 
Tampa formation (South 
Florida). 
Vicksburg formation. 
( Gray to green sands, fossilifer- 
< ous marls, clays and fullers 
( earth. 
( Yellow limestones, often phos- 
< phatic. Greenish or reddish 
( sands. Green clays. 
(' Light yellow to gray earthy and 
1 siliceous limestones, sometimes 
( cherty. Sand and clay rare. 
( Yellow limestones and greenish 
-< clays. Some chert nodules and 
( layers. 
( Soft, porous, light gray to white 
< limestone containing marl beds 
/ and layers of chert. 
