Main
        Copyright
    Front Cover
        Front Cover 1
        Front Cover 2
    Title Page
        Title Page
    Introduction and geology
        Page 1
        Page 2
        Page 3
        Page 4
    Aquifer confinement zone map
        Page 5
        Page 6
    Geologic cross-sections
        Page 7 (MULTIPLE)
        Page 8
        Page 9
        Page 10
        Page 11
    References
        Page 12
    Appendix I: Lithologic summaries of wells used to construct geologic cross section
        Page 13
        Page 14
        Page 15
        Page 16
        Page 17
        Page 18
        Page 19
        Page 20
        Page 21
        Page 22
        Page 23
        Page 24
        Page 25

FLRD GEOLOSk ( IC SUfRiW


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State of Florida
Department of Natural Resources
Tom Gardner, Executive Director




Division of Resource Management
Jeremy Craft, Director




Florida Geological Survey
Walt Schmidt, State Geologist and Chief









Open File Report 21


Geologic Interpretation of the Aquifer
Pollution Potential in Alachua County, Florida


by
Milena Macesich
Milena Macesich


Florida Geological Survey
Tallahassee, Florida
1988


























3 1262 04545 4179



91


/- 0, V

\fWst
LITRD\y








Florida Bureau of Geology Library
903 W. Tennessee Street
Tallahassee, Florida 32304



State of Florida
Department of Natural Resources
Tom Gardner, Executive Director


Division of Resource Management
Jeremy Craft, Director


Florida Geological Survey
Walt Schmidt, State Geologist





Open File Report 21


Geologic Interpretation of
Pollution Potential in Alachua


The Aquifer
County, Florida


By
Milena Macesich


Florida Geological Survey
Tallahassee, Florida
1988






GEOLOGIC INTERPRETATION OF THE.AQUIFER
POLLUTION POTENTIAL IN ALACHUA COUNTY, FLORIDA
INTRODUCTION
This project was initiated at the request of the Alachua County
Department 6f Environmental Services for the purpose of providing a hasic
overview of the sediments overlying the Floridan aquifer system In Alachua

County. Using well sample lithology data from 21 wells on file at the
Florida Geological Survey as well as topographic map analysis of land sur-
face physiography, geologic cross sections were constructed and three major
zones of relative aquifer confinement were delineated. Such information is
essential to future land use planning and pollution control.

GEOLOGY
The following is a general overview of the Cenozoic geology of Alachua

County. Information presented is condensed from work by Purl and Vernon
(1964), Clark et al., (1964), Wilfams et al., (1977), and Scott (1988, in

press). Figure 1 shows the generalized Cenozoic stratigraphic section in
Alachua County.
ATa-chua County is underlain by thick sequences of Paleocene and Eocene

age marine limestones and dolomites ahd by Miocene to Holocene age mostly
marine siliciclastic sediments. The Upper Paleocene to Lower Eocene Cedar
Keys Formation and the Lower to Middle Eocene Oldsmar Limestone are deep
carbonate units known only from oil test wells. They are generally not

used as a source of consumptive water.
The oldest formation penetrated by water wells within the county is

the Middle Eocene Avon Park Formation. In the Alachua County area, the
llthology of the Avon Park is typically a hard, dense, tan to dark brown
dolostone or dolomitic limestone, occasionally containing beds of cream






C


STEM SERIES STAGE UNIT UTHOLOGY

WalD SBBB we 5Mo gra1wiy to bIown sa"3 a3d cSae5 sand. conSam3ug organs
IS AY | ASD CLAYVEY SAAI ad locafMnd pMt srWs
u t at ram Sams Tom" me



oM ACUA FMATION? white. gray. orut ctayey phopbalc sands mosSt MAy reseankfn
rMworted NHawtio Group semdiis.




Ye owish gray to grleem gray to oae gray cIaey. phospbolic. and
smas II. HMTHOMW GROUP careoas sands and plO pabc. sandy lays. iYarbaCddeo wi sandy.
phosphatic mMstoane and dolomitas.



z

0 ^SMUMWAEE LPMNT(M. While to tan catcarmehc mar inW ames. in part losealtarous and
SScontaila"g wariaboe amounts of doakido.


OCALA GROUP While to crm to tan poWrou fossidarous man wmto. rqualny
Sdolvdtnm ti Me or part. gradng upwad Wto sort chaky Clcaranits
Wand oram"nuar coquna.

AM zu an to dai b wn. 5 ardnd Wai padrWodoli. Mlareddad w ith tao -
I U T ON PAJK FORMATION m snminae and daolmitin aI anem.
OLDSMAR ESTO Tan to light brown. poron o t de. fosilarous limassou and
crys taline doloa e.

Lght brown to lght grayish browWn riaby porous. gypsirous, and
>-- -- CEDAR KEYS FORMATION mcrocryllrs dolorta.







FIGURE GENERALIZED STRATIGRAPHIC COLUMN FOR ALACHUA COUNTY, FLORIDA
(modified after A.A.P.G., in preparation, and Haq et al., 1987)








colored limestone. This unit underlies all of Alachua County. It is thin-

nest and shallowest in the southwestern part of the county, where it occurs

within 150 feet of the surface. Thickness of the Avon Park Formation may

exceed 500 feet under eastern Alachua County.

Upper Eocene marine limestones of the Ocala Group unconformibly over-

lie the Avon Park Formation. The typical Ocala Group lithology grades from

alternating tan to brown limestones and dolostones in the basal portion
(Inglis and parts of the Williston Formations) to soft, white to tan fossi-

liferous limestone in the upper portion (upper part of Williston and the

Crystal River Formations). The thickness of the Ocala Group sediments in

Alachua County is approximately 200 feet. Both the Avon Park Formation and

the Ocala Group are major components of the Floridan aquifer system.

Silicified boulders of the Oligocene age Suwannee Limestone occur in a

few areas of northwestern and western Alachua County. This marine lime-

stone may have been deposited unconformibly on Ocala Group sediments in

most of what is now western Alachua County. Post-Oligocene erosion has re-

moved all but a few isolated remnants of the Suwannee Limestone in this

area. Well W-324, situated about three miles northwest of Gainesville,

penetrated 21 feet of Suwannee sediments. The lithology of these sediments

consisted of white chalky limestone containing macrofossil molds. This is

the only well in Alachua County known to have penetrated Oligocene age sec-

tion, and probably represents a local erosional remnant. Lithologically,

the Suwannee Limestone is similar to the Ocala Group and is generally dif-

ferentiated on fossils.

Clastic sediments of the Miocene age Hawthorn Group unconformibly

overlie the Ocala Group sediments in central and eastern Alachua County.

The Hawthorn Group sediments are predominantly green, blue, or gray clays








and sandy clays, sometimes containing Interbeddded phosphatic limestone and

dolostone. In eastern Alachua County, Hawthorn sediments are generally

sandier and more phosphatic, with dolostone common in the basal portions.

Thickness of the Hawthorn sediments ranges from zero where It pinches out

on Ocala Group limestone in west-central Alachua County, to almost 150 feet

in the north-east corner of the county. Anomalously thick occurences of
Hawthorn throughout the perforated area are most likely sinkhole fill

deposits. The clays, clayey sands and carbonates In the Hawthorn Group

serve to confine the Floridan aquifer system.

In a small area in southwestern Alachua County, adjacent to the

Brooksville Ridge, localized sinkhole and channel fill deposits of what has

previously been called the Alachua Formation lie directly on the Ocala

Group limestone. These white, gray, or buff sands frequently contain

clays, phosphate pebbles, and vertebrate fossils, and most likely represent
weathered and reworked Hawthorn Group deposits (Scott, 1988 in press).

The Plio-Pleistocene age Cypresshead Formation forms the core of the

Brooksville Ridge, situated in extreme southwestern Alachua County. These

variably-colored, red to pink to orange clayey and gravelly sands are

11thologically similar to the Citronelle Formation of the Florida

Panhandle. Where present, they overlie the Ocala Group, and are in turn

overlain by undifferentiated Pleistocene sands.

Undifferentiated sands and clayey sands of Pleistocene to Holocene age

form a thin veneer over most of Alachua County. In the western portion of

the county, these relatively porous sands lie directly on Ocala Group lime-

stones or Cypresshead Formation. In central and eastern Alachua County,

these sands overlie the Hawthorn Group sediments. Karst features (sink-

holes and caves) developed in the Ocala Group limestone may contain sub-

stantial thicknesses of fill composed of these sands.








AQUIFER CONFINEMENT ZONE MAP

The aquifer confinement zone map illustrates three primary zones of

relative aquifer confinement. These zones were derived and delineated

based on the sediment types and thicknesses overlying the Floridan aquifer

system as well as the geomorphology.

These three zones, in terms of potential connection to the Floridan
aquifer system, are as follows:.. 1) the confined zone, 2) the perforated

zone, and 3) the unconfined zone.


Confined Zone
A zone of relative aquifer confinement stretches from north-central

Alachua County southeastward comprising most of the eastern half of the

county. This zone is characterized by generally higher elevations under-

lain by phosphatic clayey sands, sandy clays, and carbonates of the

Hawthorn Group. For the purposes of this study, areas underlain by at

least ten feet of Hawthorn Group sediments were included in the confined

zone. In general, the Hawthorn ranges in thickness from 0 feet in western

Alachua County to approximately 150 feet in the northeastern part of the

county. Topographic quadrangle maps covering Alachua County were analyzed

to ascertain the areal extent of the physiographically high areas which do

not show signs of karst development. The boundary between the confined and

perforated zones delimits the areas of continuously confining clays from

those with significant perforations by karst features.


Perforated Zone
The perforated zone trends southeastward in a variable, one-to-five
mile wide band roughly parelleling Interstate 75. Sediments underlying the

perforated zone may contain substantial thickness of clays, but are per-




FLORIDA
LEGEND --.
YWVMIC 1 PL
mrrc mO ru emen
FLORDA STATE ROaD OEPARTleNT
Cross Section Location. E OF CON,
Well Location -S.,,, o9,,A= --NO

Confined Zone 0 -

Perforated Zone -

Unconfined Zone .


CONFINED ZONE- A reion of hher elvatons
underlain by at least 0t feet of clay or clyey
sands which form an equiclude to the Floprldm
Aquifer System.


PERFORATED ZONE- Primarily confined with
numerous sinkhole* afllwlng hydrologic acres r. -
to the Floridan Aquifer System.


UNCONFINED ZONE-A region of low and flat .
terrain where porous sands overie the F7lrlden
Aquifer System.





FLORIDA






Location of Map Arem
DEGREE OF CONFINEMENT OF THE
FLORIDAN AQUIFER SYSTEM
ALACHI'" COUNTY, FLORIDA







forated by numerous karst features. These features allow.direct hydrologic

access to the aquifer. The western boundary of the perforated zone re-

flects the areal limit of Hawthorn Group clays.

Small, isolated areas of perforated zone occur in the north-central

portion of the county near Cooter Pond, and in southeastern Alachua County

in the vicinity of Hawthorne. Both areas occur within the confined zone

but are mapped as perforated because they contain significant karst develop-

ment or lakes with hydrologic connection to the Floridan aquifer system.


Unconfined Zone

The Floridan aquifer system in western and southwestern Alachua County

is overlain by highly permeable and generally thin, undifferentiated sands.

These porous sands comprise an area of high aquifer recharge and allow

pollutants direct access to the aquifer. Within this zone, the terrain is

low and flat. Well sample logs indicate that little or no clay is present

in the sediments.


GEOLOGIC CROSS-SECTIONS

Three geologic cross-sections through Alachua County were constructed

using lithologic and formational data from wells on file at the Florida

Geological Survey. Horizontal scale is the same as that of the Aquifer

Zone Map, and cross section location lines are provided as an overlay to

that map. Vertical scale is exaggerated 250 times to show the necessary

strata. Surface relief was obtained from USGS topographic quadrangle maps.

The yellow strata represents the Plio-Pleistocene undifferentiated sands

and clayey sands. Green represents the mostly Miocene age Hawthorn Group

sediments and blue represents Eocene limestones of the Floridan aquifer

system. In most water wells, the Ocala Group limetones are the deepest







water-bearing units tapped. A few wells however penetrate limestone of the

deeper Avon Park Formation.
Figure 2 shows the three cross-section locations in Alachua County.

Cross-section A-A' runs west to east through Gainesville to just east of

Hawthorne. Section R-R' trends west to east across northern Alachua County

from High Springs to just east of Waldo. Cross-section C-C' runs north to

south from LaCrosse to south of Micanopy. Wells used in the cross sections

are numbered according to the Florida Geological Survey accession numbers;.

these numbers consist of a "W-" followed by a one-to-five-digit number uni-

que to each well.

Well Location
Wells are located according to the Township-Range System. The basic

units of this system area townships, which are numbered consecutively both

north and south of the Tallahassee Base Line. Ranges are numbered conse-

cutively both east and west of the Principal Meridan. Each township is

divided Into 36 equal one-square-mile pieces called sections. Sections are

in turn divided Into quarter-quarter sections. The two letters following

each section number listed in Table 1 reflect the quarter-quarter section

location of the well. The letter A designates the NW quarter, R the NE

quarter, C the SW quarter, and 0 the SE quarter. Quarter-quarter sections

are designated the same way. For example, the location of a well in

section 32AD would be In the northwest quarter of the southeast quarter of

section 32. Table 1 lists the wells used to construct each cross-section,

and Appendix I is a series of lithologic summaries for these wells.



~. *




FIGURE 2:
NALACHUA COUNTY MAP
CROSS SECTION
w-8 LOCATIONS







Tahle 1; WPls IIsed in Conqtructing Cross Sections


Cross
Section


A-A'


8-B'


c-C'


Well No. Townshlo/Rance/Section


W-1505
W-1703
W-2190
W-3140
W-3740
W-4031
W-4039
W-11486
W-12487
W-12613

W-875
W-3143
W-3147
W-3551
W-4034
W-7681

W-2504
W-2580
W-3143
W-3144
W-4044
W-5621
W-13898


oIDS
105S
10S
10S
los
10S

los
10S
10S
9S
9s

8S
85
75
8S
8S
8S

11US
7S
8S
9S
9S
10S
85


22E
20E
20E
19E
17E
19E
20E
22E
18E
18E

20E
19E
17E
18E
22E
21E
20E
19E
19E
19E
19E
20E
19E


2688
11CA
06AA
0308
04AO
06BC
03CR
31C8
278C
278C

328C
17AD
3400
098C
21CC
270A
25CD
22CC
17AD
2300
360R
33C0
26AC


Elevation
(Feet


161
138
147
90
77
159
146-
100
100
100

177
145
65
92
158
154

98
136
145
163
127
65
180


Depth
(Feet)


126
79
258
100
250
165
194
145
85
219


802
130
150
328
154
306


70
175
130
160
175
90
3400


Date


6-20-47
2-18-48
6-20-50
1-25-54
N/A
9-24-54
N/A
8-7-72
2-75
2-75


11-28-44
10-12-53
9-22-53
5-22-55
... 12-1-54
10-23-65

8-29-51
11-19-51
10-12-53
10-9-53
12-7-54
N/A
12-31-77


(Feet) Oate


- -- --- I-IYL~Y-_-W--L









ALACHUA.COUNTY CROSS SECTION A-A'


ALACHUA COUNTY CROSS SECTION C-C'


C'


Horizontal Scale in Miles

0 2 4


LEGE?


Undifferentiated Sands and Clays

Hawthorn Group Sediments

Ocala Group LImestones-Florldan Aquifer


GEOLOGIC CROSS SECTIONS
ALACHUA COUNTY, FLORIDA


-150


ND





I: '
i"
ir'
i
?,


REFERENCES


A.A.P.G., (in preparation), Correlation of stratigraphid units in north
America-Gulf Coast Region correlation chart: ruddlestun, P., and
81el, R., coordinators.

Clark, W., Musgrove, R., Menke, C., and Cagle, J., 1964, Water resources of
Alachua, Bradford, Clay, and Union Counties, Florida: Florida
Geological Survey Report of Investigation no. 35, 170 p.

Haq, B. U., Hardenbol, J., and Vail, P. R., 1987, Chronology of fluctuating
sea levels since Triassic (250 million years ago to present):
Science, v. 235, p. 1156-1166.

Purl, H. S., and Vernon, R. 0., 1964, Summary of the geology of Florida and
a guidebook to the classic exposures, Florida Geological Survey Spe-
cial Publication no. 5, 312 p.

Scott, T. M., 1988 (in press). The lithostratigraphy of the Hawthorn Group
(Miocene) of Florida: Florida Geological Survey Rulletin no. 59.

Williams, K., Nichol, D., and Randazzo, A., 1977, The geology of the
western part of Alachua County, Florida: Florida Bureau of Geology
Report of Investigation no. 85, 98 p.


I- '% .. I .. __ .























APPENDIX I:

Lithologic summaries of wells used to construct
geologic cross section
























Croms section A-A'







WELLi NUMBER ::;i W' 1505 COUNTY: ALACHUA
,TOTAL':~DEEH::. 126 .FT. LOCATION: T10S, R22E, S26
'13 SAMPLES PROM1- 0 TO 126 FT. LAT. N 29D 35M
/ 0. : LON W 482b0 4M
COMPLETION DATE 20/06/47 ELEVATION: 161 FT.
OTHER TYPES OF LOGS AVAILABLE GEOLOGIST

OWNER/DRILLER: FL; FOREST AND PARK SERVICE, (E.R. BENEDICT)

WORKED BY: CALDWELL


0. 40.
40. 115.
115. 126.


090UDSC
122HTRN
124CLRV


WELL NUMBER: W-1703
TOTAL DEPTH: 79 FT.
4 SAMPLES FROM 25 TO 79 FT.

COMPLETION DATE 18/02/48
OTHER TYPES OF LOGS AVAILABLE -


UNDIFFERENTIATED SAND AND CLAY
CHAWTHORN GROUP
CRYSTAL RIVER FM.


COUNTY: ALACHUA
LOCATION: TO1S, R20E,
LAT N 29D
LON = W 82D
ELEVATION: 178 FT.
NONE


Sl1 C
30M 20
17M 10


OWNER/DRILLER: JOE E. BAUKNIGHT, ACME DRILLING AND EQUIPMENT -
DRILLER

WORKED BY: GEORGE M. OGDEN, JR,, 10-23-75
SAMPLE QUALITY AND SAMPLE INTERVAL POOR


25.
79.
80.


000NOSM
122HTRN
124CLRV


NO SAMPLE
HAWTHORN GROUP
CRYSTAL RIVER FM.


0. -
25. -
79. -






WELL NUMBER: W-2190
TOTAL DEPTH: 258 FT.
26 SAMPLES FROM 0 TO 258 FT.

COMPLETION DATE 20/06/50
OTHER TYPES OF LOGS AVAILABLE NOI


COUNTY: ALACHUA
LOCATION: T10S, R20E, S06:A
SLATV= N: 29D.38M:15
LON: W 82D30M 12
ELEVATION: 147 FT.


OWNER/DRILLER: MRS. BAKER, LIBBY AND FREEMAN--DRILLERS

WORKED BY: GEORGE M. OGDEN, JR., 10-28-75
SAMPLE QUALITY GOOD


0. 30.
30. 80.
80. 180.
180. 258.


090UDSC
122HTRN
124CLRV
124WLSN


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
CRYSTAL RIVER FM.
WILLISTON FM.


WELL NUMBER: W-3140
TOTAL DEPTH: 100 FT.
10 SAMPLES FROM 10 TO 100 FT.

COMPLETION DATE 25/01/54
OTHER TYPES OF LOGS AVAILABLE NON


COUNTY: ALACHUA
LOCATION: TO1S, R19E, S05 D
LAT N 29D 36M 06
LON = W 82D 23M 20
ELEVATION: 77 FT.
IE


OWNER/DRILLER: CITY OF NEWBERRY (LIBBY AND FREEMAN)

WORKED BY: NEIL COOK -- JAN. 6, 1975
MOST SAMPLES INCLUDE CAVINGS


0. 5.
5. 40.
40. 135.
135. 250.


090UDSC
124CLRV
124WLSN
124AVPK


UNDIFFERENTIATED SAND AND CLAY
CRYSTAL RIVER FM.
WILLISTON FM.
AVON PARK LIMESTONE


WELL NUMBER: W-4031 COUNTY: ALACHUA
TOTAL DEPTH: 165 FT. LOCATION: T1OS, R19E, S06 B
31 SAMPLES FROM 3 TO 165 FT. LAT N 29D 29M 00
LON W 82D 26M 58
COMPLETION DATE 24/09/54 ELEVATION: 159 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: GEO NO. 15, MR. BUCKLEY, (GAINESVILLE EQUIP CO.)


'







WORKED BY: NEIL COOK, JAN. 3, 1975
45-165 LIMESTONE


0.
45. -
65. -


45.
65.
165.


090UDSC
122HTRN
124CLRV:


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
CRYSTAL RIVER FM.


WELL NUMBER: W-4039 COUNTY; ALACHUA
TOTAL DEPTH: 194 FT. LOCATION: T10S, R20E, S03 C
42 SAMPLES FROM 2 TO 194 FT. LAT = N 29D 39M 10
LON = W 82D 17M 45
COMPLETION DATE //55 ELEVATION: 146 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: R. C. LEARY, GAINESVILLE EQUIPMENT -- DRILLER

WORKED BY: GEORGE M. OGDEN, JR., 11-25-75
SAMPLE QUALITY GOOD


0. 30.
30. 135.
135. 165.
165. 194.
194. 195.


090UDSC
122HTRN
124CLRV
124WLSN
124AVPK


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
CRYSTAL RIVER FM.
WILLISTON FM.
AVON PARK LIMESTONE


WELL NUMBER: W-11486 COUNTY: ALACHUA
TOTAL DEPTH: 145 FT. LOCATION: T10S, R22E, S31 C
14 SAMPLES FROM 0 TO 145 FT. LAT = N 29D 34M 54
LON = W 82D 08M 07
COMPLETION DATE 07/08/72 ELEVATION: 100 FT.
OTHER TYPES OF LOGS AVAILABLE CALIPER

OWNER/DRILLER: DNR CORE HOLE HAWTHORNE #1

WORKED BY: T. SCOTT 8/79


10.
134.
44.5
104.5
134.
145.0


090UDSC
122HTRN
122COOS
122MKHD
122PNFM
124CLRV


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
COOSAWHATCHIE FM.
MARKS HEAD FM.
PENNEY FARMS FM.
CRYSTAL RIVER FM.


0. -
10. -
10. -
45.5-
104.5-
134. -






WILL NUMBER: W-12487 COUNTY: ALACHUA
TOTAL DEPTH: 85 FT. LOCATION: T098- RI8E, S27BC
LAT W 29D 40M.23,
LON N 82D 30M 04.
COMPLETION DATE: //84 ELEVATIONz: 100 FT.
OTHER TYPES OF LOGS AVAILABLE GEOPHYSICAL

OWNER/DRILLER: FLORIDA GEOLOGICAL SURVEY

WORKED BY: R. HOENSTINE 1984

0. 25. UNDIFFERENTIATED SAND AND CLAY
25. 85. OCALA GROUP UNDIFFERENTIATED


WELL NUMBER: W-12613 COUNTY: ALACHUA
TOTAL DEPTH: 219 FT. LOCATION: T09S, R18E, S27BC
LAT N 29D 40M 20
LON W 82D 29M 59
COMPLETION DATE //84 ELEVATION: 100 FT.
OTHER TYPES OF LOGS AVAILABLE GEOPHYSICAL

OWNER/DRILLER: FLORIDA GEOLOGICAL SURVEY

0. 23. NO SAMPLES
23. 25. ALACHUA FORMATION / HAWTHORN GROUP
UNDIFFERENTIATED
25. 175.5 OCALA GROUP UNDIFFERENTIATED
171.5- 219.5 AVON PARK LIMESTONE


U

























Cross section B-B'







WELL NUMBER: W- 875 COUNTY: ALACHUA
TOTAL DEPTH: 802 FT. LOCATION: TOSS, R20E, S32
24 SAMPLES FROM 10 TO 802 FT. LAT N 29D 45M 02
LON W 82D 19M 18
COMPLETION DATE 28/11/44 ELEVATION: 177 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: NATIONAL TURPENTINE AND PULPWOOD CORP.
(LIBBY AND FREEMAN)

WORKED BY: NEIL COOK
NOTE: THIS WELL IS UNRELIABLE SAMPLE INTERVALS ARE TOO LARGE
SAMPLES SEEM TO BE MISLABELLED


0. 20.
20. 150.
150. 620.
620. 735.
735. 802.


090UDSC
122HTRN
1240CAL
124AVPK
124CLRV


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
OCALA GROUP
AVON PARK LIMESTONE
CRYSTAL RIVER FM.


WELL NUMBER: W- 3143 COUNTY: ALACHUA
TOTAL DEPTH: 134 FT. LOCATION: T09S, R19E, S17
12 SAMPLES FROM 0 TO 130 FT. LAT N 29D 47M 20
LON W 82D 25M 51
COMPLETION DATE 12/10/53 ELEVATION: 143 FT.
OTHER TYPES OF LOGS AVAILABLE GEOLOGIST

OWNER/DRILLER: S.B. CULLEN, J.J. HARE -- DRILLER

WORKED BY: CALDWELL 3/7/87


0. 20.
20. 90.
90. 130.


090UDSC
122HTRN
124CLRV


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
CRYSTAL RIVER FM.


WELL NUMBER: W- 3147 COUNTY: ALACHUA
TOTAL DEPTH: 160 FT. LOCATION: T07S, R17E, S34 B
14 SAMPLES FROM 0 TO 150 FT. LAT N 29D 49M 53
LON = W 82D 35M 45
COMPLETION DATE 25/09/53
OTHER TYPES OF LOGS AVAILABLE GEOLOGIST

OWNER/DRILLER: MRS. PEARL CARRAWAY, J.J. HARE -- DRILLER

WORKED BY: GREEN 3/9/87


0. 150.


124CLRV


CRYSTAL RIVER FM.


(2







WELL NUMBER: W- 3551
TOTAL DEPTH: 328 FT.
24 SAMPLES FROM 0 TO 238 FT. .

COMPLETION DATE 22/05/55
OTHER TYPES OF LOGS AVAILABLE NON


COUNTY: ALACHUA
LOCATION: T08S, R18E,
LAT = N 29D
: LON = W 82D
ELEVATION: 92 FT.
FE


OWNER/DRILLER: ALACHUA CO. BD. OF PUB..INSTR. (ACME DRLG. AND
EQUIP.)

WORKED BY: NEIL COOK FEB. 4, 1975


0. 80.
80. 180.
180. 248.


090UDSC
124CLRV
124WLSN


UNDIFFERENTIATED SAND AND CLAY
CRYSTAL RIVER FM.
WILLISTON FM.


WELL NUMBER: W- 4034
TOTAL DEPTH: 154 FT.
28 SAMPLES FROM 10 TO 154 FT.

COMPLETION DATE 01/12/54
OTHER TYPES OF LOGS AVAILABLE NOV


COUNTY: ALACHUA
LOCATION: TOSS, R22E, S21 C
LAT = N 29D 46M 42
LON W 82D 06M 26


OWNER/DRILLER: ROD REESE, GAINESVILLE EQUIPMENT -- DRILLER

WORKED BY: GEORGE M. OGDE, JR., 11-14-75
SAMPLE QUALITY GOOD, SAMPLING INTERVAL POOR


0. 55.
55. 154.


090UDSC
122HTRN


UNDIFFERENTIATIED SAND AND CLAY
HAWTHORN GROUP


WELL NUMBER: W- 7681 COUNTY: ALACHUA
TOTAL DEPTH: 306 FT. LOCATION: TOSS, R21E, S27
27 SAMPLES FROM 0 TO 290 FT. LAT N 29D 46M 05
LON W 82D 11M 20
COMPLETION DATE 23/10/65 ELEVATION: 154 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: CITY OF WALDO (J. J. HARE -- DRILLER)

WORKED BY: NEIL COOK, FEB. 18, 1975


0. 40.
40. 190.
190. 290.


090UDSC
122HTRN
124CLRV


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
CRYSTAL RIVER FM.


S09 B
48M 22
31M 26


















Cross section C-C'


(.







WELL NUMBER: W- 2504 COUNTY: ALACHUA
TOTAL DEPTH: 70 FT. LOCATION: TilS, R2
14 SAMPLES~~FROM' 0 TO 70 FT. LAT N
LON = W
COMPLETION DATE 29/08/51 ELEVATION: 98 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: MRS. J. CLARK, J. C. GLENN -- DRILLER

WORKED BY: GEORGE M. OGDEN, JR., 11-3-75.
SAMPLE QUALITY FAIR

0. 65. 122HTRN HAWTHORN GROUP
65. 70. 124CLRV CRYSTAL RIVER FM.


OE, S25 C
29D 30M 01
82D 15M 43


WELL NUMBER: W- 2580 COUNTY: ALACHUA
TOTAL DEPTH: 175 FT. LOCATION: T07S, R19E, S22 C
35 SAMPLES FROM 0 TO 175 FT. LAT = N 29D 51M 32
LON = W 82D 24M 31
COMPLETION DATE 19/11/51 ELEVATION: 136 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: FLORIDA FOREST SERVICE, J. C. GLENN -- DRILLER

WORKED BY: GEORGE M. OGDEN, JR., 11-4-75
SAMPLE QUALITY FAIR

0. 20. 090UDSC UNDIFFERENTIATED SAND AND CLAY
20. 150. 122HTRN HAWTHORN GROUP
150. 175. 124CLRV CRYSTAL RIVER FM.


WELL NUMBER: W- 3143 COUNTY: ALACHUA
TOTAL DEPTH: 134 FT. LOCATION: TOSS, R19E, S17
12 SAMPLES FROM 0 TO 130 FT. LAT = N 29D 47M 20
LON = W 82D 25M 51
COMPLETION DATE 12/10/53 ELEVATION: 143 FT.
OTHER TYPES OF LOGS AVAILABLE GEOLOGIST

OWNER/DRILLER: S.B. CULLEN, J. J. HARE -- DRILLER

WORKED BY: CALDWELL, 3/7/87

0. 20. 090UDSC UNDIFFERENTIATED SAND AND CLAY
20. 80. 122HTRN HAWTHORN GROUP
80. 130. 124CLRV CRYSTAL RIVER FM.







WELL NUMBER: W- 3144 COUNTY: ALACHUA ;
TOTAL DEPTH: 163 FT. LOCATION; T09S, R19E, S23
16 SAMPLES FROM 10 TO 163 FT. : LAT/LON- :NO ENTRY
COMPLETION DATE 9/10/53 ELEVATION: 163 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: BURNHAM & HARTMAN, J. J. HARE -- DRILLER

WORKED BY: THOMAS SEAL, 6/4/88, CONTACT BETWEEN HAWTHORN AND
OCALA GROUP AT 90-100 FT., SUWANNEE MISSING TERRA ROSA
HORIZON AT 100 FT.


0. 30.
30. 110.
110. 163.


090UDSC
122HTRN
124CLRV


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
CRYSTAL RIVER FM.


WELL NUMBER: W- 4044 COUNTY: ALACHUA
TOTAL DEPTH: 175 FT. LOCATION: T09S, R19E,
30 SAMPLES FROM 3 TO 175 FT. LAT N 29D
LON = W82D
COMPLETION DATE 07/12/54 ELEVATION: 127 FT.
OTHER TYPES OF LOGS AVAILABLE NONE


S36 D
40M 13
21M 25


OWNER/DRILLER: G.H. BLACK, JR., GAINESVILLE EQUIPMENT -- DRILLER

WORKED BY: GEORGE M. OGDEN, JR., 12-2-75
SAMPLE QUALITY GOOD


0. 12.
12. 55.
55. 140.
140. 175.


090UDSC
122HTRN
124CLRV
124WLSN


UNDIFFERENTIATED SAND AND CLAY
HAWTHORN GROUP
CRYSTAL RIVER FM.
WILLISTON FM.


WELL NUMBER: W- 5621 COUNTY: ALACHUA
TOTAL DEPTH: 90 FT. LOCATION: T10S, R20E,
9 SAMPLES FROM 10 TO 90 FT. LAT = N 29D
LON = W 82D
COMPLETION DATE N/A ELEVATION: 69 FT.
OTHER TYPES OF LOGS AVAILABLE NONE


S33CD
33M 45
16M 11


OWNER/DRILLER: JAMES MARTALERO, MALURE GARDENS, GAINESVILLE

WORKED BY: MIKE KNAPP, 10-20-75
SAMPLE QUALITY GOOD


0. 40.
40. 90.


090UDSC
124CLRV


UNDIFFERENTIATED SAND AND CLAY
CRYSTAL RIVER FM.


'.
.4..








WELL NUMBER: W-13898 COUNTY: ALACHUA
TOTAL DEPTH: 3400 FT. LOCATION: T08S, R19E, S25 A
:.SAMPLES NONE LAT = N 29D 45M 42
.:..'.""'- '".<.'-' .: .""" .. .. : ""' "LON = W 82D 23M 18
COMPLETION DATE 31/12/77 ELEVATION: 180 FT.
OTHER TYPES OF LOGS AVAILABLE NONE

OWNER/DRILLER: DEERHAVEN DEEP STRAT TEST ALSAY-PIPPIN CORP.

WORKED BY: MIKE KNAPP, SAMPLES DESCRIBED JAN.-APR. 1978
INTERVAL FROM 172-318 FT. CONTAINS WILLISTON-INGLIS CONTACT.
PALEOZOICS WERE PICKED ON THE FIRST OCCURRENCE OF SILICIC S.S.


110..
172.
318.
330.
515.
1020.
1540.
1827.
2010.
2191.
2641.
2720.
3400.


122HTRN
124CLRV
000NOSM
124WLIG
124AVPK
124LKCT
124OLDM
125CDRK
211LWSN

211TYLR
211ASTN
3600DVC


HAWTHORN GROUP
CRYSTAL RIVER FM.
NO SAMPLE
WILLISTON-INGLIS
AVON PARK LIMESTONE
LAKE CITY LIMESTONE
OLDSMAR LIMESTONE
CEDAR KEYS LIMESTONE
LAWSON LIMESTONE
LAWSON LIMESTONE LOWER MEMBER
TAYLOR GROUP
AUSTIN GROUP
ORDOVICIAN


0.
110.
172.
318.
330.
515.
1020.
1540.
1827.
2010.
2191.
2641.
2720.