PETROLEUM POSSIBILITIES OP FLORIDA 
91 
well the Ocala limestone, according to Cushman, lies below 350 feet, 
and from 550 to 770 the formations are of Lower Cretaceous age. 
PORT MYERS AREA. 
The Ft. Myers area may be regarded as including De Soto, Hardee, 
Highlands, Charlotte, Glades and Lee Counties. The surface formations 
in the northern part of this area are chiefly Pliocene shell marls and in 
the southern and eastern parts of the area Pleistocene shell marl and 
limestone. 
A deep well was drilled at Ft. Myers in 1914, from which a represen¬ 
tative set of samples was obtained. This well reached a total depth of 
950 feet.* 
Description of samples from the city well, Ft. Myers, Florida; drilled, 1914; 
driller, Ohio Well Drilling Company, Jacksonville, Florida. Size, 10 to 8 inches; 
casing 10-inch, 14 feet; 8-inch, 203 feet; principal water supply 875 feet; flowing, 
yields 650 gallons per minute; depth, 950 feet; in charge of drilling, G. P. Peppard. 
Depth in feet . 
Light-colored limestone with fragments of fossils, also some sand and 
dark, shiny phosphate pebble. Fossils include bryozoa, broken shell 
fragments, etc.... 200 
Much the same rock. Shark’s tooth, some phosphate pebble, broken shells, 
some echinoderm spines and many bryozoa. ... 210 
Similar light-colored limestone. Some fine, black phosphate pebble im¬ 
bedded in the rock.... 220 
Similar light-colored limestone .... 230 
Similar light limestone consisting of broken shell fragments, together with 
fragments of rock containing minute black phosphate pebble. 280 
Similar light-colored limestone consisting of broken fragments of different 
shells, together with some pieces of hard, dark-colored rock. 300 
Similar light-colored limestone consisting of shell fragments. 320 
A similar light-colored limestone containing also small shiny black phos¬ 
phate pebbles....... 360 
Similar light-colored limestone with an abundance of small shiny black 
phosphate pebbles .... 340 
Similar light-colored limestone consisting of a mass of broken shell frag¬ 
ments, rather more finely broken up than the preceding. Phosphate 
pebbles somewhat less abundant than in last sample. ...... 380 
Similar light-colored limestone consisting of a mass of shell fragments 
broken up finely..... 400 
Similar light-colored limestone, some phosphate pebble as in preceding... 420 
Similar light-colored limestone, including phosphate pebble, also one small 
oyster shell ..... 440 
Similar light-colored limestone, although not so finely broken up and in¬ 
cluding pieces of rock with the small phosphate pebbles imbedded. 460 
Buff calcareous clay, some phosphate pebble and some shell fragments...... 480 
*Fla. Geol. Surv., 7th Ann. Rept., pp. 51-52, 1915. 
