PETROLEUM POSSIBILITIES OE ELORIDA 89 
Depth in feet. 
Tight-colored, sandy, phosphatic limestone. This is very similar to the 
rock above the blue clay. A few fossils, including fragments of pec- 
ten. Also one flattened water-worn pebble of the same material as 
the rock above.............. 272 
The greater part of the material of this sample is the bluish gray, sandy, 
phosphatic limestone similar to that already described. With this is 
found a light-colored, compact limestone, very slightly phosphatic, 
as shown by test. The sample also contains several pieces of red iron 
ore. Of fossils, only a few fragments were seen... 275 
Light-colored, phosphatic and slightly sandy marl or limestone. The 
phosphate is in the form of smooth, dark pebbles imbedded in the marl. 
The rock is fossiliferous, although the fossils are badly broken.. 320 
Light-colored, phosphatic marl or limestone, more or less sandy. One 
small fragment of chalcedony holding cast of shell. A few fossils, 
mostly broken bivalves and gastropods. The sample includes some 
bluish gray, sandy, phosphatic limestone...,,.... 350 
Light-colored, phosphatic, sandy marl; also some bluish gray, sandy, 
phosphatic marl or limestone. Some broken fossils are included. 360 
Light-colored, finely powdered marl or limestone. Fragments of echino- 
derm spines are present and other small or broken fossils. A few 
phosphatic pebbles are seen, being black and shiny in appearance. A 
clear-grained quartz sand occurs sparingly. This material is less 
phosphatic than that which lies above and resembles the Chattahoochee 
limestone as seen at Newland Spring, near Falmouth, in Suwannee 
County, and near Bass, in Columbia County. Test showed this pow¬ 
dered material to contain a small amount of phosphate.. 400 
Light-colored, finely powdered marl or limestone. Fragments of echino- 
derm spines are seen, and also other small fossils, including a few 
bryozoa. This material is similar to that at 400 feet, although there 
seem to be no phosphatic pebbles and little, if any, sand.... 410 
Light-colored, nearly white limestone, not so finely powdered as the pre¬ 
ceding two samples. Fragments of broken shells are abundant. Bry¬ 
ozoa are numerous. Some foraminifera are present, the most common 
being orbitoides. This limestone is, with little doubt, the Ocala. Test 
shows it to be not phosphatic.. 420 
The limestone at this depth is practically the same as that at 420 feet. It 
is light-colored or nearly white, fragments of broken shell are abun¬ 
dant, among which pecten is recognized. Small foraminifera are 
numerous, and there are also broken pieces of larger specimens. Bry¬ 
ozoa are present........ 450 
Foraminifera abundant, chiefly orbitoides, including large specimens, 
most of which are broken by the drill....... 500 
Foraminifera abundant. The material is similar to that at 500 feet. 550 
At this depth foraminifera are abundant. The predominating form is 
nummulites. Orbitoides present, but not abundant. The sample in¬ 
cludes also some pieces of a soft, granular marl... 600 
Limestone, probably hard and compact, the sample being finely powdered 
by the drill. Both nummulites and orbitoides are present, although 
only the small specimens escaped being powdered by the drill. This 
compact limestone has a slightly brownish cast. 630 
Hard, compact limestone with brownish cast, powdered exceedingly fine 
by the drill. Few fossils escaped being powdered up, although some 
foraminifera and bryozoa are present...... 636 
This sample shows a mixture of finely powdered material with brownish 
cast, together with coarser material from a softer rock. With the 
coarser material is included some small pieces of bluish-colored chert. 
Foraminifera are present.....'. 650 
