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FLORIDA GEOLOGICAL SURVEY—I4TH ANNUAL REPORT 
PALM BEACH COUNTY 
Palm Beach County is on the Atlantic coast, in south Florida. In the 
western part of the county, as indicated by the shell marls brought to 
the surface in the St. Lucie Drainage Canal, the Pliocene is very near 
the surface, being covered only by muck accumulation. In the eastern 
part of the county is found Pleistocene shell marls and a limited develop¬ 
ment of limestones. 
A well drilled at Palm Beach indicated Eocene limestone at a depth 
of 915 or 1,000 feet. The formations above the Eocene probably include 
Pleistocene, Pliocene and Miocene. A log of this well has already been 
given. (See Miami Area.) 
PASCO COUNTY 
Pasco County is located on the Gulf coast and extends inland to the 
Withlacoochee River. In the northern part of this county the Ocala 
Eocene is found at the surface, while near the south side is found the 
Tampa formation. The Alum Bluff Miocene is found capping many 
of the hills of the interior of the county. 
In 1917 a well located about four miles east of Dade City was drilled 
by Mr. J. M. Critchlow to a depth of 2,200 feet as a test for oil. Of this 
well no log is available, but it is reported by Mr. Critchlow that no shows 
of oil were encountered. 
PINELLAS COUNTY 
Pinellas County occupies the Pinellas peninsula and lies between Hills¬ 
borough Bay and the Gulf of Mexico. The Caloosahatchee (Pliocene) 
has been collected from a drainage ditch about three miles east of 
Largo.* The Alum Bluff formation (Miocene) is exposed in this 
county near Indian Rock, on the Gulf coast. Although but little exposed, 
this formation probably underlies much of the county. The Tampa 
formation (Oligocene) has been determined from exposures near Tar¬ 
pon Springs, in the northern portion of the county.f Some Pleistocene 
deposits are to be expected in this county near the coast. 
A well was begun November 24, 1921, by Mr. R. V. Hill near Olds- 
mar, in the extreme eastern part of the county, as a test for oil. 
The following is a log of a well at Clearwater: 
^Collection made by Herman Gunter. Determinations by Miss Julia Gardner, 
U. S. Geol. Surv. Letter of C. Wythe Cooke, March 29, 1922. 
fFrom letter of C. Wythe Cooke, March 29, 1922. 
