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Surficial and Bedrock Geology of the Southern Portion of the U.S.G.S. 1:100,000 Scale Crestview Quadrangle, Northwestern...
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Permanent Link: http://ufdc.ufl.edu/UF00099552/00001
 Material Information
Title: Surficial and Bedrock Geology of the Southern Portion of the U.S.G.S. 1:100,000 Scale Crestview Quadrangle, Northwestern Florida ( FGS: Open File Map Series 90 )
Physical Description: Map
Language: English
Creator: Green, R.C., Means, G.H., Evans, W.L. III, Paul, D.T., Scott, T.M., Campbell, K.M., and Gaboardi, M.M.
Publisher: Florida Geolological Survey
Place of Publication: Tallahassee, FL
Publication Date: 2001
Copyright Date: 2001
 Record Information
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management:
The author dedicated the work to the public domain by waiving all of his or her rights to the work worldwide under copyright law and all related or neighboring legal rights he or she had in the work, to the extent allowable by law.
System ID: UF00099552:00001

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OPEN


FILE


MAP


SERI


SURFICIAL


AND


BEDROCK


GEOLOGY


OF


THE


U.S.G.


S.


100,000


SCALE


NORTHWESTERN

BY


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GUY


THOMAS


MABRY


WILLIAM


L.


DAVID


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SCOT

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AND


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2001


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FLORIDA GEOLOGICAL SURVEY
OPEN-FILE MAP SERIES
(O.F.M.S.) PRODUCED
UNDER THE
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260 -- 85
250-
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230-- 75
220-
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200 65
190 -
180-- 60
170-- 55
160 -
150-- 50
140- 45
130 -
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110- 35
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-200 -65
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B.L.S.=BELOW LAND SURFACE


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6

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260 -- 85
250-
240- 80
230-- 75
220-
210-- 70
200-- 65
190 -
180-- 60
170- _55
160-
150-- 50
140 45
130 -
120- 40
110- 35
100 -
90 -- 30
80- -25
70-
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-150 -50
-160 -
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-180 ---60
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-200 --65
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FEET METERS
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250-
240-- 80
230-- 75
220-
210-- 70
200-- 65
190 -
180-- 60
170-- 55
160 -
150-- 50
140- 45
130 -
120- 40
110- 35
100 -
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160
150-- 50
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120 40
110- 35
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70
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50 15
40
30-- 10
20 5
10
0 0
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-20-
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-40
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-60 --20
-70
-80 --25
-90 --30
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-80 --25
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90


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TD=645'
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0 0.5 1


@W-14577


DIW-18168

10


SCALE
2


FEET METERS


3 4 5 MILES


0 1 2 3 4 5 6 7 8 KILOM


S


200 -
190 -
180 -
170 -
160 -
150 -
140 -
130 -
120 -
110-
100 -
90 -
80 -
70 -
60 -
50 -
40 -
30 -
20 -
10-
0-
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-20 -
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-50 -
-60 -
-70 -
-80 -
-90 -
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-120 -
-60 -
-70 -
-80 -
-90 -
-100 -
-110-
-120-


- 65

- 60

- 55

- 50

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- 40

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-15

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-35

-40

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-30

-35


CORE TD=1500'
"=B.L.S.
CUTTINGS-NUMBER
REPRESENTS CUTTINGS INTERVAL
ETERS TD=TOTAL DEPTH OF WELL
DIETERS B.LS.=BELOW LAND SURFACE

VERTICAL EXAGGERATION=222 TIMES HORIZONTAL SCALE


FEET METERS
270-- 90
260 -- 85
250-
240-- 80
230-- 75
220-
210-- 70
200-- 65
190 -
180-- 60
170- _55
160 -
150-- 50
140- 45
130 -
120-- 40
110- 35
100:
90 -- 30
80 -_ 25
70-
60 -- 20
50 15
40-
30-- 10
20-
10-
0-- 0
-10- --5
-20 -
-30 ---10
-40-
-50---15
-60 ---20
-70-
-80 ---25
-90 ---30
-100-
-110- --35
-120 ---40
-130-
-140---45
-150 -50
-160 -
-170 ---55
-180---60
-190
-200 --65


W-254**


PEARL JUNIPER
CREEK A CREEK


W-405


TEN MILE
CREEK


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LEGEND


E CORE
CUTTINGS-NUMBER
REPRESENTS CUTTINGS INTERVAL IN FEET
TD=TOTAL DEPTH OF WELL
B.L.S.=BELOW LAND SURFACE

**NOTE: PICKS MADE FROM GEOLOGIST'S LOG
(NO SAMPLES AVAILABLE)


0 0.5 1


SCALE
2 3


TD=524'
B.L.S.
5 MILES


0 1 2 3 4 5 6 7 8 KILOMETERS

VERTICAL EXAGGERATION=166.7 TIMES HORIZONTAL SCALE


FEET METERS
270 --90
260 -- 85
250-
240-- 80
230-- 75
220-
210-- 70
200-- 65
190 -
180-- 60
170-- 55
160 -
150-- 50
140- 45
130 -
120- -40
110- 35
100 -
90 -- 30
80 -_ 25
70-
60 -- 20
50 15
40:
30- 10
20 5
10:
0 0
-10- -5
-20 -
-30 ---10
-40-
-50---15
-60 ---20
-70-
-80 ---25
-90 ---30
-100-
-110---35
-120 ---40
-130-
-140---45
-150 ---50
-160-
-170 ---55
-180 -60
-190
-200 --65


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FEET METERS
250
240-- 80
230-- 75
220-
210- 70
200-- 65
190 -
180- 60
170 _- 55
160
150-- 50
140- 45
130
120-- 40
110- 35
100
90 30
80 25
70:
60- 20
50 15
40:
30- 10
20 5
10:
0 0
-10- -5
-20 -
-30 ---10
-40 -
-50---15
-60 ---20
-70-
-80 ---25
-90 :--30
-100-
-110 --35
-120 ---40
-130 -
-140- 45
-150 ---50
-160 -
-170---55
-180 ---60
-190 -
-200 ---65
-210---70
-220 -
-230 --75
-240 -


------------


The near surface geology of the southern portion of the
U.S.G.S. 1:100,000 scale Crestview quadrangle is a reflection of the
conditions that exist in a structurally uneventful Eastern Gulf C
Coastal Plain. The region consists of gently dipping, generally
unconsolidated sequences of Miocene to Pleistocene siliciclastic
sediments, with one minor exposure of Miocene carbonates in the
northeastern portion of the study area.
Physiographically, this study area is comprised of gently
sloping Neogene fluvio-deltaic siliciclastics of the Western Highlands,
terraced Pleistocene-Holocene siliciclastics of the Gulf Coastal
Lowlands, and various floodplains. Several relict Neogene coastal
terraces have been recognized in the area (Healy, 1975). Surface
topography has been deeply incised by numerous streams, creating
a dendritic drainage pattern. Some of the streams, particularly in
the eastern portion of the study area, emerge from steep-sided
,.-rv -n n Tk -, ( ,-,.I-, ,,r,- nn n hnnrkn nr-, 1 .. ,- ,,-,, ,. I -. ,,,+ f .+.-,


previously named formations of the Alum Bluff Group such as the
Shoal River, Oak Grove, and Chipola Formations are difficult to trace
laterally without relying on fossils. Due to similarities in lithologies of
the units, sparse core control in the area, and limited exposures of
the Alum Bluff Group, these formations have not been differentiated
in this study.
The only unit within the Alum Bluff Group that is easily traced
based strictly on lithology, and is therefore differentiated on the
cross sections, is the Bruce Creek Limestone. Summaries of
previous work on these units can be found in Huddlestun, 1984,
Schmidt, 1984, Clark and Schmidt, 1982, Schmidt and Clark, 1980,
and Vernon and Puri, 1956.
A veneer of Quaternary sediments and soils blankets much of
the study area. For this reason, the authors have adopted the
policy of mapping the first named geologic unit within twenty feet
trC 1 i. _\ ^f +kl_ Ifr +k ^++^;n ^\. L _!__ J_ -L.!


(Means, et al., 2000). Based on biostratigraphic indicators found in
unaltered Byram Formation in areas outside of this study area, its
age has been determined to be Early Oligocene (Vicksburgian).
Sediments of the Alum Bluff Group unconformably overlie the
Byram Formation and Bridgeboro Limestone where these units occur.
The Alum Bluff Group is highly variable in thickness and lithology.
It attains a maximum thickness of over 260 feet (79.2 meters;
W-8353) in the central portion of the study area. However, many
of the cores drilled for this project terminate in Alum Bluff Group
sediments; therefore total thickness of the unit cannot be
determined in some areas. This unit occurs throughout the entire
study area and can be seen in outcrop in many stream valleys in
Walton and Holmes counties.
Lithologically, Alum Bluff Group sediments range from clayey
sands and gravels to greenish, stiff, micaceous clays with variable


of the Citronelle Formation does not allow for easy differentiation
between Citronelle Formation and re-worked Citronelle sediments.
The Citronelle Formation consists of sands and gravels with
varying amounts of clay. Umonitic "hardpan" development occurs in
some areas. In the northeastern and southern portion of the study
area, a unique facies of the Citronelle Formation occurs. This
facies ranges in lithology from a clay and clayey sand to gravel
with occurrences of numerous Ophiomorpha burrows and mollusk
molds, indicating deposition in a marine environment. It is unclear
how this unit relates to the Citronelle Formation, and for purposes
of this study, it has been mapped as Citronelle Formation. The
Citronelle Formation has been considered a fluvio-deltaic sequence
and this facies may reflect the nearshore marine environment of
Citronelle Formation deposition.
For the most part, the Citronelle Formation is devoid of
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