98 
Florida geological survey—14TH annual report 
cene and Miocene are probably present, although thin, as the Eocene is 
entered near the coast at a depth of from 190 to 220 feet. Some wells in 
this county have a depth of about 1,000 feet. (See page 40.) Following 
is a log of a well drilled on Melbourne Beach: 
Log of Well at Melbourne Beach * 
Depth in feet. 
Surface sands and soil....... 0-3 
Yellow sand .. 3 - 11 
Coquina rock . 11 - 21 
Fine gray sand . 21 - 51 
Shell and sand .. 51 - 56 
Hard shell rock . 56 -119 
Greenish clay . 119 -173 
Dark-colored rock, sharks’ teeth....... 173' -173^4 
Greenish clay . 173^4-174^4 
Dark-colored rock, sharks’ teeth. 174^4-175 
Greenish clay .. 175 -221 
Eocene limestone. Increase of flow with depth. A pressure of 17^4 
pounds at this depth was shown by the gauge March 15, 1910. 
Mild sulphur water . 221 -318 
BROWARD COUNTY 
Broward County is on the Atlantic coast, in southern Florida. The 
surface formations are of Pleistocene age, the western part of the county 
being within the Everglades. No records of deep wells have been ob¬ 
tained in this county. 
CALHOUN COUNTY 
Calhoun County lies west of the Apalachicola River and extends 
south to the Gulf of Mexico. Near the north line of the county, on the 
Chipola and Apalachicola Rivers, the Chattahoochee formation is ex¬ 
posed at the surface. Farther to the south the Lower and Upper Mio¬ 
cene shell marls come into the section. The Lower Miocene shell marls 
are seen at Bailey’s Ferry, on the Chipola River, while the Upper Mio¬ 
cene is found at Abe’s Spring, farther down the same river, the dip of 
the formations being toward the Gulf. In the southern half of the coun¬ 
ty the exposures consist of sandy clays and sands of undetermined age. 
Following is the log of a well near Clarksville, in the northern part 
of Calhoun County: 
*Fla. Geol. Surv., 5th Ann. Rept., p. 240, 1913. 
