Upload
dotuong
View
215
Download
0
Embed Size (px)
Citation preview
SALT-DOME LOCATIONS IN THE GULF COASTAL PLAIN,
SOUTH-CENTRAL UNITED STATES
By Jeffery D. Beckman and Alex K. Williamson
U.S. GEOLOGICAL SURVEYWATER-RESOURCES INVESTIGATIONS REPORT 90-4060
A Contribution of the
Regional Aquifer-Systems AnalysisProgram
AUSTIN, TEXAS 1990
DEPARTMENT OF THE INTERIOR
MANUEL LUJAN, JR., Secretary
UNITED STATES GEOLOGICAL SURVEY
Dallas L. Peck, Director
For more information Copies of this report can be write to: purchased from:
Project Chief U.S. Geological SurveyU.S. Geological Survey Books and Open-File Reports SectionGulf Coast RASA Box 25425, Federal CenterN. Shore Plaza Bldg., Rm. 104 Denver, CO 80225-542555 N. Interregional Hwy.Austin, Texas 78702
CONTENTS
Page
Abstract...................................................... 1Introduction.................................................. 1Purpose and scope............................................. 3Discrepancies between references .............................. 4Salt-dome locations and method of compilation................. 4Dome names .................................................... 6Dome name coding system....................................... 18Data description.............................................. 18Summary....................................................... 19References cited.............................................. 20
ILLUSTRATIONS
Plate 1. Salt-dome locations in the Gulf of Mexico Coastal Plain, south-central United States and the adjacent Continental Shelf In pocket
Page»
Figure 1. Gulf Coast Regional Aquifer-System Analysis studyarea boundary and location of salt basins ........ 2
2-11. Maps showing location of salt domes that penetrate the base of layers:
2. Layer 11 (permeable zone A)..................... 73. Layer 10 (permeable zone B)..................... 84. Layer 9 (permeable zone C)...................... 95. Layer 8 (permeable zone D)...................... 106. Layer 7 (permeable zone E)...................... 117. Layer 6 (upper Claiborne aquifer)............... 128. Layer 5 (middle Claiborne aquifer).............. 139. Layer 4 (lower Claiborne-upper Wilcox aquifer).. 14
10. Layer 3 (middle Wilcox aquifer)................. 1511. Layer 2 (lower Wilcox aquifer).................. 16
12. Graph showing number of salt domes that penetratethe base of the indicated layer................... 17
13. Graph showing total number of salt domes and number of domes where depth to top is unknown, or is above or below top of Midway confining unit by area of salt dome occurrence..................... 17
iii
Table 1.
Table 2.
TABLES
[Table 2 at back of report]
Comparison of sources used for locating domes and number of matches between each pair of sources.,
Map code, salt-dome name, location, depth to salt and caprock, diameter and volume of salt domes, and sources of data.............................
Page
23
CONVERSION FACTORS AND ABBREVIATIONS
"Inch-pound" units of measure used in this report may be converted to metric (International System) units by using the following factors.
Multiply inch-pound units
foot (ft)
mile (mi)o
cubic mile (mi ) 2 square mile (mi )
fix
0.3048
1.6094.168
2.590
To obtain metric unit
meter (m)
kilometer (km) t3cubic kilometer (km )2 square kilometer (km )
ALTITUDE DATUM
Sea level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929)--a geodetic datum derived from a
general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929.
iv
SALT-DOME LOCATIONS IN THE GULF COASTAL
PLAIN, SOUTH-CENTRAL UNITED STATES
By
Jeffery D. Beckman and Alex K. Williamson
ABSTRACT
Information on salt domes in the Gulf of Mexico Coastal Plain,
south-central United States and the adjacent Continental Shelf were compiled
from major published sources, 1973-84. The location of 624 salt domes is
shown on a map at a scale of 1:1,500,000. A color coding system was used to
show that the occurrence, size, shape, and location of these domes varies
among sources. Two tables of additional data accompany the map and include
other available information such as: identifying sources, depth to salt and
caprock, diameter, volume, name, and uppermost zone of surrounding sediment
that is penetrated, as well as the number of matches between sources. * The
locations of salt domes that penetrate specific permeable zones within the
gulf coast regional aquifer systems are shown on maps.
INTRODUCTION
The Gulf Coast Regional Aquifer-System Analysis (RASA) covers an area of 230,000
square miles onshore and 60,000 square miles of the adjacent Continental Shelf (fig. 1)
(Grubb, 1987). The aquifer system consists of Cenozoic sediments that were divided into
aquifers, permeable zones, and confining units (Grubb, 1987, p. 104). This division was
accomplished by: 1) Identifying areally extensive units of low permeability; 2)
identifying large hydraulic conductivity contrasts between adjacent permeable zones not
separated by a regional confining unit; and 3) identifying variations in hydraulic head
with depth (Weiss and Williamson, 1985; Weiss, 1990; and Hosman and Weiss, 1988).
Manuscript approved for publication April 12, 1990
MIS
SO
UR
I
I5
0
100
150
200 M
ILE
S
50
100
150
20
0 K
ILO
ME
TE
RS
^
/ /<%
No
rth
Louis
iana
"E
ast
Texa
s .
N S
alt
Ba
sin
MIS
SIS
SIP
PI
*'
\^
J>
' / '
Mis
siss
ipp
i~
S
alt
Ba
sin
/ G
ulf
Coast
Sa
lt B
asi
n ,
ILLI
NO
IS
KE
NT
UC
KY
Bou
ndar
y of
stu
dy a
rea
FL
OR
IDA
Fig
ure
1.
Gulf C
oa
st R
eg
ion
al
Aq
uife
r-S
yste
m A
na
lysi
s st
ud
y a
rea
bo
un
da
ry a
nd l
oca
tion o
f sa
lt basi
ns.
The regional aquifers, permeable zones, and confining units were assigned layer numbers and are, from youngest to oldest
Layer number
Aquifer or Confining Permeable zone unit
Mississippi River Valley alluvial aquifer and permeablezone A (Holocene-upper Pleistocene deposits) 11
permeable zone B (lower Pleistocene-upper Pliocenedeposits) 10
permeable zone C (lower Pliocene-upper Miocene deposits) 9zone D confining unit 17
permeable zone D (middle Miocene deposits) 8zone E confining unit 16
permeable zone E (lower Miocene-upper Oligocene deposits) 7Vicksburg-Jackson confining unit 15
upper Claiborne aquifer 6middle Claiborne confining unit 14
middle Claiborne aquifer 5lower Claiborne confining unit 13
lower Claiborne-upper Wilcox aquifer 4middle Wilcox aquifer 3lower Wilcox aquifer 2
Midway confining unit 12
t
The layer numbers shown above will be used throughout the rest of this report for convenience. The Midway confining unit is the base of the flow system throughout much of the study area (Grubb, 1984).
Salt domes in the study area are found in five distinct regions. These regions, known as salt basins, probably reflect thick accumulations of sedimentary salt. Overburden pressures and density differences created by later sedimentary deposits then caused the salt to flow into salt structures. The salt basins (fig. 1) are: South Texas, East Texas, North Louisiana, Mississippi, and Gulf Coast. The Gulf Coast salt basin, the largest, underlies southeastern Texas, southern Louisiana, and the adjacent Continental Shelf.
PURPOSE AND SCOPE
This study was initiated under the Gulf Coast Regional Aquifer-System Analysis to compile published data on salt domes to the edge of the Continental Shelf. The composite data were compiled to study the possibility of salt domes as a source of salt in brine waters in Cenozoic sediments of the Gulf of Mexico Coastal Plain in the south-central United States and adjacent Continental Shelf (Williamson and others, 1990, p. 107). The shallowest permeable zone penetrated by each dome has been identified in order to assess the possibility of salt dissolution and movement through the permeable zones. In this report, the compiled data are displayed on a map and in a table. Salt-dome locations and geometry were compiled from eight sources, each of which investigated all or part of the study area. Salt-dome name, location, depth to salt and caprock, diameter, volume, and identifying sources used for this compilation are provided in a table.
DISCREPANCIES BETWEEN REFERENCES
Identification of salt dome locations from each of the references used to construct plate 1 are compared in table 1. The discrepancies in dome identification between references are due to several factors. First, the more recent references reflect advances made in seismic surveying and other remote sensing methods of geophysics. Therefore, some structures that were identified by earlier references as salt domes have been reclassified as non-salt structures, whereas other salt domes have been identified for the first time. For this reason, recent references were favored in compiling these data. Second, despite the advancements, identification of salt domes from seismic surveys remains highly subjective (such that two people using the same data may reach different conclusions). Third, the different investigations are based on different databases of raw material and published information. For example, the U.S. Department of the Interior (1983) lists neither Martin (1980) nor Halbouty (1979) as references. Halbouty (1979) lists only those salt domes that have been confirmed by drilling, so that his base list of 343 domes should be considered fundamental. However, Halbouty (1979) also identifies some domes that no other sources identified (for example, Eugene Island Block 231). Finally, the references use different depth criteria for identifying salt domes from deeper salt structures.
Understanding the problem of locating and identifying salt domes from seismic survey data is important because seismic surveys are a major source of information for most of the references used in this report. For example, most of the offshore domes from Martin (1980) were identified from single-channel seismic surveys and gravity surveys. Single-channel seismic analysis does not allow for the differentiation between salt domes and shale plugs (Martin, 1980) because both are piercement structures of similar densities. This may explain the large number of structures (481) that Martin (1980) identified. Additionally, the actual location of salt domes may be blurred because of an effect called sideswipe that allows structures some distance from the map trace of the seismic line to be projected onto the line. Exact salt dome locations can be determined only from a very tight pattern of seismic lines and by correlating seismic surveys with other data.
SALT-DOME LOCATIONS AND METHOD OF COMPILATION
The salt-dome location map (plate 1) was compiled from eight recently published sources: Anderson and others, 1973; New Orleans and Lafayette Geological Societies, 1973; Halbouty, 1979; Martin, 1980; Louisiana Geological Survey, 198la and 1981b; U.S. Department of the Interior, 1983; and Jackson and Seni, 1984. Four of these references display both size and location of the salt domes by giving their outlines at various depths: New Orleans and Lafayette Geological Societies (1973) at 10,000 feet; Martin (1980) from 5,000 to 8,500 feet (the depth range representative of one second of two-way travel time on a seismic survey, where the depth depends on the nature of the sediment overlying the dome); U.S. Department of the Interior (1983) at an unspecified depth; and Jackson and Seni (1984) at 10,000 feet.
Four sources aided in locating the salt domes although they did not show their shape. Anderson and others (1973) shows only dome locations. The other three sources (Halbouty, 1979; and Louisiana Geological Survey, 198la and 1981b) show the location of salt domes not related to hydrocarbon production and the location and size of oil and gas fields that have a spatial association with possible salt domes. Halbouty (1979)
Table 1. Comparison of sources used for locating domes and number of matches betweeneach pair of sources
[The total number of possible salt domes In the study area is 624.]
Source A* M* I*
A* 254 171 108
M* 481 301
I* 355
J*
N*
H
h
L*
1*
J* N* H
18 9 168
8 132 201
0 126 166
20 0 11
133 68
241
h
79
54
18
7
13
1**
102
L*
88
249
218
0
90
146
6
300
1*
26
48
42
0
34
4
36
4
81
* Source covers only a part of the study area.
A* Anderson, and others (1973) covers only onshore and coastal areas.
M* Martin (1980) covers areas south of 32 degrees latitude and east of 100 degrees longitude.
I* U.S. Department of Interior (1983) covers areas south of 30.5 degrees latitude and east of
98 degrees longitude.
J* Jackson and Senl (1984) covers only east Texas salt basin.
N* New Orleans and Lafayette Geological Societies (1973) covers only offshore and coastal Louisiana.
H Ealbouty (1979) covers all areas, salt domes associated with oil and gas fields,
h Ealbouty (1979) covers all areas, salt domes not associated with oil and gas fields.
L* Louisiana Geological Survey (1981a, 1981b) covers offshore and onshore Louisiana, respectively;
salt domes that may be related to oil and gas fields.
1* Louisiana Geological Survey (1981a, 1981b) covers offshore and onshore Louisiana, repectlvely;
salt domes not related to oil and gas fields.
**Ealbouty labels one area with two dome names, vhile all other sources show this location as one dome.
lists only those fields where the presence of salt has been confirmed by drilling. Oil and gas fields displayed on the Louisiana Geological Survey (198la and 1981b) references were used only to augment the other six sources. Fields located above and around the perimeter of structures that were presumed domes adds validity to the other sources.
The importance of maintaining consistency between references while plotting dome locations on plate 1 required that the salt domes be split into two groups, offshore and onshore domes. Offshore domes were located by aligning latitude and longitude lines because the references disagree on the exact location of offshore area boundaries. The offshore area boundaries for this map were taken from the U.S. Department of the Interior (1983). Onshore domes were located by aligning county and parish boundaries because all sources did not have latitude and longitude lines, and those that did have lines did not agree on their exact location in reference to county and parish boundaries. Although map projections and scales varied among and within reference maps, a good fit was achieved through repeated registration across the map and the use of a variable-scale copying machine.
The locations of salt domes that penetrate the base of individual layers (aquifers and permeable zones) are posted at the approximate center of the dome structure in figures 2-11. The number of salt domes that penetrate the base of each layer ranges from a high of 154 for layer 9 (lower Pliocene-upper Miocene deposits) to a low of 29 for layer 6, the upper Claiborne aquifer (fig. 12). Younger layers generally extend farther downdip (gulfward), which explains how a younger layer can be penetrated by more domes than an older layer.
The distribution of salt domes among the salt-dome basins is quite variable (fig. 13). The percentage of domes within each basin with known depths and penetrating into the gulf coast aquifers (above the top of the Midway confining unit) also varies widely. About 44 percent of the domes have unknown depth and 44 percent penetrate the top of the Midway confining unit, whereas only in 12 percent of the domes is the top of salt deeper than the top of the Midway. The Midway confining unit was chosen to differentiate depths because it is an areally extensive, massive marine clay. Above it are the gulf coast aquifers (Grubb, 1984) and below it are Cretaceous sediments. The depths of most of the offshore salt domes are unknown (fig. 13).
DOME NAMES
Onshore domes are identified by the salt basin in which they are found and their individual names. Offshore domes generally are identified by the name of the offshore area and the block number of the discovery well for the associated oil or gas field. This leads to some confusion in the naming system of offshore domes since some domes do not trap hydrocarbons and so are named for the dome location. Also, some offshore domes cover a portion of several blocks or are associated with several different oil fields. Some domal features were combined if they were named together in one of the sources. Some were split if one of the sources gave two different names.
Some domes lack a published name; these domes are identified on the map by their identifying code being printed in red (plate 1). Dome name coding system is described in the next section. Onshore domes have been given a name for the county or parish in which they are located and a sequential number. Domes in coastal areas, within State waters, are named for the nearest county or parish and a sequential number. Offshore domes have been given a name for their offshore area and the block number in which most of the dome is located.
MIS
SO
UR
I
TE
NN
ES
SE
E
/"A
. i/V
tS
-'
'
ILL
INO
IS
KE
NT
UC
KY
EX
PL
AN
AT
ION
--
AP
PR
OX
IMA
TE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
D
OW
ND
IP L
IMIT
OF
LAY
ER
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F LA
YE
R
FLO
RID
A
50
10
0
150
200 K
ILO
ME
TE
RS
Fig
ure
2. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
ayer
11
(pe
rmea
ble
zone
A).
MIS
SO
UR
I
oo
TE
NN
ES
SE
E
ILL
INO
IS
KE
NT
UC
KY
131
vy
EX
PL
AN
AT
ION
OU
TC
RO
P O
R S
UB
CR
OP
AR
EA
--
Dash
ed w
here
conce
ale
d
---
AP
PR
OX
IMA
TE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
D
OW
ND
IP L
IMIT
OF
LA
YE
R
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F LA
YE
R
AL
AB
AM
A
FL
OR
IDA
.
50
1
00
15
0200M
ILE
S
50
100
15
0
200 K
ILO
ME
TE
RS
Fig
ure
3.
Lo
ca
tio
n o
f sa
lt d
om
es
that
pe
ne
tra
te t
he b
ase
of
laye
r 10
(p
erm
ea
ble
zo
ne
B).
MIS
SO
UR
I
EX
PL
AN
AT
ION
I
OU
TC
RO
P O
R S
UB
CR
OP
AR
EA
--
Dash
ed w
here
co
nce
ale
d
-
AP
PR
OX
IMA
TE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
DO
WN
DIP
LIM
IT O
F L
AY
ER
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F L
AY
ER
50
100
150
200M
ILE
S
TE
NN
ES
SE
E
ILL
INO
IS
KE
NT
UC
KY
50
1
00
1
50
200 K
ILO
ME
TE
RS
Fig
ure
4. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
ayer
9 (
perm
eabl
e zo
ne C
).
MIS
SO
UR
I
TE
NN
ES
SE
E
ILL
INO
IS
KE
NT
UC
KY
EX
PLA
NA
TIO
N
I
OU
TC
RO
P O
R S
UB
CR
OP
AR
EA
Dash
ed w
here
conce
ale
d
AP
PR
OX
IMA
TE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
D
OW
ND
IP L
IMIT
OF
LA
YE
R
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F L
AY
ER
FLO
RID
A
50
100
150
200M
ILE
S
50
10
0
150
200 K
ILO
ME
TE
RS
Fig
ure
5. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
aye
r 8
(per
mea
ble
zone
D).
MIS
SO
UR
I
TE
NN
ES
SE
E
v IL
LIN
OIS
KE
NT
UC
KY
EX
PL
AN
AT
ION
I
OU
TC
RO
P O
R S
UB
CR
OP
AR
EA
D
ash
ed
where
co
nce
ale
d
__-.
A
PP
RO
XIM
AT
E B
OU
ND
AR
Y O
F S
ALT
D
OM
E B
AS
INS
UN
DE
RLY
ING
LA
YE
R
DO
WN
DIP
LIM
IT O
F L
AY
ER
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F L
AY
ER
50
10
0
150
200 K
ILO
ME
TE
RS
Fig
ure
6. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
ayer
7 (
pe
rme
ab
le z
one
E).
MIS
SO
UR
I
to
TE
NN
ES
SE
E
T»
/--/
.-,:
v J *?
T-v
Nv
\i
^x
%V
~c<
WV
^/
*' -s^.
? \
vte
aTK
Ras
'lriv
f "^
ILL
INO
IS
KE
NT
UC
KY
EX
PL
AN
AT
ION
caa
OUTC
ROP
OR S
UBCR
OP A
REA
--D
ashe
d w
here
con
ceal
ed
A
PP
RO
XIM
AT
E B
OU
ND
AR
Y O
F S
ALT
D
OM
E B
AS
INS
UN
DE
RLY
ING
LA
YE
R
DO
WN
DIP
LIM
IT O
F L
AY
ER
1
LOC
AT
ION
OF
SA
LT D
OM
ES
TH
AT
P
EN
ET
RA
TE
BA
SE
OF
LA
YE
R
FLO
RID
A
\
50
10
0
150
200M
ILE
S
0
50
100
150
200 K
ILO
ME
TE
RS
Fig
ure
7. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
aye
r 6
(upp
er C
laib
orne
aq
uife
r).
MIS
SO
UR
I
TE
NN
ES
SE
E
ILLIN
OIS
KENT
UCKY
x>
EX
PL
AN
AT
ION
.
B
OU
TC
RO
P O
R S
UB
CR
OP
AR
EA
D
ash
ed
where
conce
ale
d
- -
AP
PR
OX
IMA
TE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
DO
WN
DIP
LIM
IT O
F L
AY
ER
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F L
AY
ER
50
100
150
200M
ILE
S
0
50
100
15
0
200 K
ILO
ME
TE
RS
Fig
ure
8. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
ayer
5 (
mid
dle
Cla
ibor
ne a
qu
ifer)
.
MIS
SO
UR
I
EX
PL
AN
AT
ION
BH
O
UT
CR
OP
OR
SU
BC
RO
P A
RE
A--
D
ash
ed
where
conce
ale
d
AP
PR
OX
IMA
TE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
DO
WN
DIP
LIM
IT O
F L
AY
ER
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F L
AY
ER
50
100
150
200MILES
TE
NN
ES
SE
E
ILL
INO
IS
KE
NT
UC
KY
50
100
150
200 KILOMETERS
Fig
ure
9. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
aye
r 4
(lo
we
r C
laib
orn
e-u
pp
er
Wilc
ox a
qu
ifer)
.
MIS
SO
UR
I
TE
NN
ES
SE
E
Nl /
X,/
/'
ILL
INO
IS
KE
NT
UC
KY
EX
PL
AN
AT
ION
B
OU
TC
RO
P O
R S
UB
CR
OP
AR
EA
--
Das
hed
whe
re c
on
cea
led
- A
PP
RO
XIM
ATE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
DO
WN
DIP
LIM
IT O
F LA
YE
R
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T P
EN
ETR
ATE
BA
SE
OF
LAY
ER
FL
OR
IDA
50
100
15
0
200 K
ILO
ME
TE
RS
Fig
ure
10. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
ayer
3 (
mid
dle
Wilc
ox a
qu
ifer)
.
MIS
SO
UR
I
O\
V
EXPL
AN
ATI
ON
I
OU
TC
RO
P O
R S
UB
CR
OP
AR
EA
Dash
ed w
here
co
nce
ale
d
AP
PR
OX
IMA
TE
BO
UN
DA
RY
OF
SA
LT
DO
ME
BA
SIN
S U
ND
ER
LYIN
G L
AY
ER
DO
WN
DIP
LIM
IT O
F L
AY
ER
LO
CA
TIO
N O
F S
ALT
DO
ME
S T
HA
T
PE
NE
TR
AT
E B
AS
E O
F L
AY
ER
AL
AB
AM
A
FL
OR
IDA
50
100
15
02
00
MIL
ES
TE
NN
ES
SE
E
ILL
INO
IS
KE
NT
UC
KY
50
100
ISO
200 K
ILO
ME
TE
RS
Fig
ure
11. Location o
f sa
lt do
mes
th
at
pe
ne
tra
te t
he b
ase
of l
ayer
2 (
low
er
Wilc
ox a
quife
r).
CO1112 oQ
CO
LLocc w m
300
250
200
150
100
5U
I I I I I I TOP OF SALT DOME
I I Depth unknownIS§i Depth below top of Midway confining unitHI H Depth above top of Midway confining unit
AREA OF SALT-DOME OCCURRENCE1 Gulf Coast Louisiana, offshore
2 Gulf Coast Louisiana, onshore3 Gulf Coast Texas, offshore
4 Gulf Coast Texas, onshore
5 Mississippi
6 North Louisiana7 East Texas8 South Texas
1 23 4 5 6 78
AREA OF SALT-DOME OCCURENCE
Figure 13. Total number of salt jomes and number of domes where depth to top is unknown or is above or below top of Midway confining unit by area of salt-dome occurrence.
200
co 150
CO
Li. O
CE 111m
100
50
0
T
6 7
LAYER
10 11
Figure 12. Number of salt domes that penetrate the base of the indicated layer. The number of domes terminating within layers is given in table 2.
17
DOME NAME CODING SYSTEM
Due to space limitations, a letter and number coding system was used to identify each salt dome on the map (plate 1). Offshore domes are symbolized by the offshore block number. Domes without published names have an identifying code printed in red on plate 1. Offshore block numbers increase toward the south within each block. Onshore domes generally are symbolized by four letters from their name. If the name is only one word then the code is the first four letters (example, Race for Raceland). If the name is more than one word then the code is the first letter of each word with the last word filling out the four characters (example, VPar for Valley Park, BdGl for Bayou des Glaizes, and WCBB for West Cote Blanche Bay). If duplicate codes occurred the code was slightly modified, usually the second letter from the first word was added (example, BaHi for Barbers Hill and BiHi for Big Hill). Onshore domes without published names use a similar system for county or parish names with the fourth character occupied by the sequential number (example, JDal for Jefferson Davis 1). Duplicate codes are handled in a similar fashion (example, Jffl for Jefferson County, Texas, and Jefl for Jefferson Parish, Louisiana).
DATA DESCRIPTION
Salt domes are listed alphabetically by State and then by area of salt dome occurrence in table 2 (at back of report). The distribution of salt domes among the areas is shown in figure 13. A code has been used in table 2 to show which references identified and mapped each entry as a salt dome. Specific data about each of the 624 domes was included in table 2 wherever available, including: depth to caprock and depth to salt (Anderson and others, 1973; Halbouty, 1979; Jackson and Seni, 1984; 'and Stipe, 1960, 1962, 1980). When depth discrepancies occurred between sources the shallowest depth and generally the latest source was used. Size of the domes is shown by diameter of dome top (Anderson and others, 1973; Stipe, 1960, 1962, 1980) and the volume of salt above a depth of 10,560 feet, the presumed depth of what is termed "mother salt" in Halbouty (1979, tables 8-3 through 8-8).
The volume of salt is a more accurate measurement of dome size than diameter, because diameter can vary greatly with depth. Mature, piercement salt structures may contain most of their salt at shallow depths with the cross sectional area of the dome decreasing with depth. Less mature salt structures are found at greater depths and usually have a mounded shape so that their cross sectional area increases with depth. A depth of 10,000 feet represents the delineation between intermediate and deep salt structures in the classification of Halbouty (1979), but in Jackson and Seni (1984) 10,000 feet seems to be the cutoff between salt diapirs (piercement structures) and salt pillows (less mature, nonpiercement structures).
The land-surface or sea-bottom altitudes in table 2 are approximations. Land- surface altitudes at -salt domes were estimated by interpolation from a uniform grid of altitudes spaced at 5-mile intervals. Onshore, each altitude in the grid was the average of about 90 points uniformly spaced at intervals of 30 seconds of latitude and longitude. The data set and the method used is described more fully by Williams and Williamson (1989, p. 335-336). The original data was recorded in meters, so the resolution is at least 3 feet. That is why land-surface altitude at so many salt domes near the coastline is shown as 3 feet. The grid values of sea-bottom altitude were estimated by computer contouring about 100 data points at oil wells.
18
SUMMARY
Information on 624 salt domes in the Gulf of Mexico Coastal Plain of the south- central United States and the adjacent Continental Shelf was compiled from eight published sources, 1973-84. The salt domes included are both those confirmed by drilling and those interpreted from seismic surveys. The information tabulated includes a map code; salt-dome name; location by State, area of salt-dome occurrence, county (or parish), latitude and longitude; aquifer, permeable zone, or confining unit in which the salt dome terminates; land-surface or sea-bottom altitude at the location of the salt dome; depth to the top of salt and caprock; diameter and volume of the salt dome; and the published reference from which the data were obtained.
The depth to top of salt is unknown for about 44 percent of the salt domes. Most of the domes for which the depth to salt is unknown are located in the offshore part of the Gulf Coast salt basin, predominantly offshore Louisiana. Only 12 percent of the domes are known to terminate below the gulf coast aquifer systems. The remaining 44 percent penetrate the gulf coast aquifer systems.
Salt-dome locations and outlines are shown on a map at a scale of 1:1,500,000. The locations of salt domes that penetrate each of 10 aquifers of the gulf coast aquifer systems are shown on smaller scale maps.
19
REFERENCES CITED
Anderson, R.E., Eargle, D.H., and Davis, B.O., 1973, Geologic and hydrologic summary of salt domes in Gulf Coast region of Texas, Louisiana, Mississippi, and Alabama: U.S. Geological Survey Open-File Report 4339-2, 294 p.
Grubb, H.F., 1984, Planning report for the Gulf Coast Regional Aquifer-System Analysis in the Gulf of Mexico Coastal Plain, United States: U.S. Geological Survey Water- Resources Investigations Report 84-4219, 30 p.
1987, Overview of the Gulf Coast Regional Aquifer-System Analysis, South-Central United States, in Vecchioli, John, and Johnson, A.I., eds., Regional aquifer systems of the United States, aquifers of the Atlantic and Gulf Coastal Plain, American Water Resources Association Monograph no. 9, p. 108-118.
Halbouty, M.T., 1979, Salt domes, Gulf Region: United States and Mexico (2nd ed.): Houston, London, Paris, and Tokyo, Gulf Publishing Company, 561 p.
Hosman, R.L., and Weiss, J.S., 1988, Geohydrologic units of the Mississippi embayment and Texas coastal uplands aquifer systems, south-central United States: U.S. Geological Survey Open-File Report 88-316, 21 p.
Jackson, M.P.A., and Seni, S.J., 1984, Atlas of salt domes in east Texas: University of Texas, Bureau of Economic Geology Report of Investigations no. 140, 102 p.
Louisiana Geological Survey, compiler, 1981a, Offshore Louisiana oil and gas map prepared for Department of Natural Resources, scale 1:380,160, 1 sheet.
1981b, Oil and gas map of Louisiana prepared for Department of Natural Resources,scale 1:380,160, 1 sheet.
Martin, R.G., 1980, Distribution of salt structures in the Gulf of Mexico: Map anddescriptive text: U.S. Geological Survey Miscellaneous Field Studies Map 1213,scale 1:2,500,000, 2 sheets, 8 p.
New Orleans and Lafayette Geological Societies, 1973, Louisiana oil and gas fields, 123 p. Stipe, J.C., ed., 1960, Salt domes of south Louisiana, v. 1: New Orleans Geological
Society, 145 p. 1962, Salt domes of south Louisiana, v. 2: New Orleans Geological Society, 107 p. 1980, Salt domes of south Louisiana, v. 3: New Orleans Geological Society, 142 p.U.S. Department of the Interior, 1983, Geologic and geomorphic features: Minerals
Management Service, Gulf of Mexico OCS Regional Office, map, Visual No. 2, scale1:1,200,000, and Visual No. 5, scale 1:800,000, 2 sheets.
Weiss, J.S., and Williamson, A.K., 1985, Subdivisions of thick sedimentary units intolayers for simulation of ground-water flow. Ground Water, v. 23, no. 6, p. 767-774.
Weiss, J.S., 1990, Geohydrologic units of the coastal lowlands aquifer system, south- central United States: U.S. Geological Survey Open-File Report 90-173, 30 p.
Williams, T.A., and Williamson, A.K., 1989, Estimating water-table altitudes forregional ground-water flow modeling, U.S. Gulf Coast Ground Water, v. 27, no. 3,p. 333-340.
Williamson, A.K., Grubb, H.F., and Weiss, J.S., 1990, Ground-water flow in the gulfcoast aquifer systems, south-central United States--A preliminary analysis: U.S.Geological Survey Water-Resources Investigations Report 89-4071, 124 p.
20
TABLE
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
[Alt
ern
ate
nam
es
are
in p
are
nth
esi
s.
Cod
es
for
area
of
salt
do
me
occ
urr
ence
are
: GC
-
gu
lf co
ast
; M
* M
issi
ssip
pi!
OL
-
gu
lf coast
, o
ffsh
ore
L
ouis
ian
a;
OT
* gulf
co
ast
, o
ffsh
ore
T
exas
» M
L
No
rth
Louis
iana;
ST
*
south
T
exas
; ET
»
Eas
t T
exas
, deg
. -
dec
imal
deg
rees
. L
ayer
0
is
belo
w th
e bas
e o
f th
e M
idw
ay co
nfi
nin
g unit
; se
e pa
ge
3.
Dom
e to
p
layer
is
the
lay
er
wit
hin
whi
ch th
e salt
do
me
term
inate
s.
Est
imat
ed la
nd-
surf
ace
or
sea-f
loor
alt
itu
de
is
in fe
et
abov
e or
belo
w se
a le
vel.
T
he
man
y alt
itu
des
of
3 fe
et
are
due
to
a co
mb
inat
ion
of
facto
rs;
see
page
18
. D
epth
to salt
an
d ca
pro
ck is
in
feet
belo
w
lan
d su
rface.
Vol
ume
unit
s ar
e cu
bic
mil
es
abov
e a
dep
th o
f 1
0,5
60
fe
et.
D
ata
sourc
es fo
r lo
cati
ons:
A
- A
nder
son
and
oth
ers
(1973);
M
- M
arti
n
(19
80
);
I «
U.S
. D
epar
tmen
t o
f th
e In
teri
or
(19
83
);
J -
Jack
son
an
d S
eni
(1984);
N
- H
ew
Orl
ean
s an
d L
afa
yett
e G
eolo
gic
al S
ocie
ties
(197
3)»
H -
Hal
bcu
ty
(1979),
sa
lt
dom
es ass
ocia
ted w
ith o
il
and
gas
field
s;
h -
Hal
bcu
ty
(1979),
salt
do
mes
n
ot
ass
ocia
ted
w
ith
oil
an
d ga
s fi
eld
s;
L «
Lo
uis
ian
a G
eolo
gic
al
Sur
vey
(19
81
a,
19
81
b),
sa
lt
dom
es
asso
ciat
ed w
ith oil
an
d ga
s fi
eld
si
1
Lo
uis
ian
a G
eolo
gic
al
Sur
vey
(1981a,
19
81b)
, salt
do
mes
n
ot
ass
ocia
ted
wit
h o
il
and
gas
field
s.
Das
hes
indic
ate
no
data
.]
to U)
Map
Dome
code
name
Mcln Mclntosh
SCar South Carelton
Area of
salt
dome
County
occur-
or
rence
Parish
M
WASHINGTON
M
CLARKE
Lati
tude
(deg.)
31.25
31.24
Longi
tude
(deg.)
ALABAMA
88.10
87.91
Dome
top
layer 7 0
Land-
surface
or sea-
floor
altitude
(feet)
90
10
Depth
to
salt
(feet)
400
11176
Depth
to cap
rock
(feet)
270 --
Dia- Volume
meter (cubic
Data
(miles) miles)
sources
A h--
A
AlB
u A
nse
la
B
utt
e
AIs
l A
ver
y
Isla
nd
Bar
a B
ara
tari
a
BdC
h B
ay
de
Ch
ene
BJu
n
Bay
Ju
no
p
BS
EI
Bay
S
te.
Ela
ine
BB
le
Bay
ou
B
leu
BB
cu
Bay
ou B
ouil
lon
BC
ho
Bay
ou
C
hoct
aw
BC
ou
Bay
ou
C
ouba
BdA
l B
ayo
u
des
A
lem
andes
B
dGl
Bay
ou
des
G
lais
e
BIs
l B
ell
e Is
le
BiL
a B
ig
Lak
e B
Bay
B
lack
B
ayo
u
LO
UIS
IAN
A
GC
GC
GC
GC
GC
GCGC
GC
GC
GC GC
GC
GCGCGC
ST MARTIN
IBERIA
JEFFERSON
JEFFERSON
TERREBONNE
TERREBONNE
IBERVILLE
ST MARTIN
IBERVILLE
ST CHARLES
ST CHARLES
IBERVILLE
ST MARY
CAMERON
CAMERON
30 29
29 29 29 29 30 30 30 29 29 30 29 30 30
.27
.89
.72
.40
.23
.18
.27
.25
.32
V
.76
.33
.54
.01
.03
91.
91.
90.
90.
91.
90.
91.
91.
91.
90.
90.
91.
91.
93.
93.
94 92 11 05 06 66 41 60 31 29 38 62 39 22 63
11 118 9
10 11 10 10 11 9 8 9
110
10
15
5 3 3 3 3 3 3 3 3 3 5 3 3 3
137 8
7730
7950
4678
1407
2801
1261
629
6160
7560
3219
135
12910
1035
-- -- -- --
4247
710
2793
1030
237
7552 --
110 --
881
0.33
0.50
-- 0.50
0.50
1.5
0.25
1.0
2.0
1.0
0.50
0.50
0.50
-- 1.0
3.1
4.0
-- -- 2.8
6.7
4.6
4.5
1.3
1.3
0.60
1.5
1.9
-- 2.8
AMI--H-L-
AMI--H-L-
AMI--H-L-
AM---H-L-
AM NH-
L-
AMI-NH-L-
AMI--H-L-
AMI--H-L-
AMI--H-L-
AMI--H-L-
AMI--H-L
AMI--H-L
A H-L
AMI--H-L
AM H-L
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt a
nd c
apro
ck,
diam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
Conti
nued
Map
Dome
code
name
Bosc Bosco
BCam Bully Camp
CIsl Calllou Island
Call Calcasleu 1
Cal2 Calcasleu 2
CaLa Calcasleu Lake
Caml Cameron 1
Cam2 Cameron 2
Cam3 Cameron 3
CMea Cameron Meadows
Chac Chacahoula
Char Charenton
Chen. Cheneyvllle
Clov Clovelly
CBIs Cote Blanche Is.
Crol Crowley
COff Cut Off
Darr Darrow
DDC1 Delta Duck Club
DLak Dog Lake
EHac East Hackberry
Edge Edgerly
FPol Fausse Point
FIBa Four Isle Bay
Fran Franklin
GIBa Garden Island Bay
GMea Golden Meadow
GHop Good Hope
Guey Gueydan
Hest Hester (Vacharle)
Area of
salt
dome
occur
rence
GC
GC
GC
GC
GC
GC
GCGCGCGC
GCGC
GCGC
GC
GC
GCGC
GC
GC
GC
GC
GC
GC
GC
GC GC
GCGCGC
County
or
Parish
ST LANDRY
LAFOURCHE
TERREBONNE
CALCASIEU
CALCASIEU
CAMERON
CAMERON
CAMERON
CAMERON
CAMERON
LAFOURCHE
ST MARY
RAPIDES
LAFOURCHE
ST MARY
ACADIA
LAFOURCHE
ASCENSION
PLAQUEMINES
TERREBONNE
CAMERON
CALCASIEU
IBERIA
TERREBONNE
ST MARY
PLAQUEMINES
LAFOURCHE
ST CHARLES
VERMILION
ST JAMES
Lati
tude
(deg.)
30.31
29.46
29.10
30.24
30.11
29.88
29.84
29.74
29.70
29.83
29.75
29.88
30.98
29.48
29.74
30.18
29.56
30.15
29.22
29.21
30.02
30.29
30.05
29.25
29.79
29.10
29.39
30.00
30.05
30.03
Longi
tude
(deg.)
92.14
90.36
90.46
93.29
92.95
93.27
93.43
93.14
92.97
93.64
90.93
91.49
92.26
90.25
91.71
92.34
90.30
90.99
89.18
90.85
93.41
93.45
91.64
90.79
91.50
89.16
90.30
90.38
92.46
90.74
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
0
10 10 -- -- 10 -- -- --
9
118
14 11 11
0 8 9 810
9 811 11
0
100 8 9 8
35
3 3 3 3 3 3 0 3 3 3 340
3 5
20
3 5 0 3 3
103 3 3 3 3 3 3 3
Depth
to
salt
(feet)
13742
1296
2740 -- --
2369 -- -- --
4770
1100
10002
6741
1168
298
14892
9708
4595
9214
1574
3330
3898
823
980
16910
1658
15344
9580
4653
6780
Depth
to cap
rock
(feet)
_ .
1256
2500 -- --
1490 -- -- -- --
875 --
6563
389
257 -. -- -- --
1423
2934
3800
792
498 --
1350 -- --
4458 --
Dia
meter
(miles)
^ 0.75
0.50
.-- -- 1.0
-- -- -- 0.33
2.0
-- 0.13
0.50
1.0
-- 0.50
0.50
0.50
0.50
1.0
0.25
0.50
0.50
-- 1.0
-- -- 0.66
0.50
Volume
(cubic
Data
miles)
sources
_ _
2.7
2.3
-- -- 3.1
-- -- -- 2.7
9.1
-- 0.04
0.60
6.8
-- 0.03
1.6
0.06
-- 4.7
1.5
7.9
3.1
-- 6.3
-- -- 0.80
1.6
AM---H
AMI--H-L-
AMI-NH-L-
--I L-
--I L-
AMI--H-L-
--I L-
-MI- --
-MI----L-
AMI--H-L-
AMI--H-L-
AMI--H-L-
A H-L-
AMI--H-L-
AMI--H-L-
A H-L-
AMI--H-L-
A H-L-
AMI-NH-L-
AMI--H-L-
AMI--H-L-
AMI--H-L-
AM H-L-
AMI--H-L-
A-I- L-
AMI-NH-L-
A-I--H-L-
AM H-L-
AMI--H-L-
A -H-L-
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of d
ata-
-Con
tinue
d
K>
Map
Dome
code
name
Iber Iberia
Ibel Iberia 1
Ibvl Iberville 1
Iota Iota
Iowa Iowa
Jean Jeanerette
Jefl Jefferson
1JDal Jefferson Davls 1
JIsl Jefferson Island
Jenn Jennings
LafL Lafitte
Lafl Lafourche 1
Laf2 Lafourche 2
Laf3 Lafourche
3Laf4 Lafourche
4
LBar Lake Barre
LChL Lake Chicot
LHer Lake Hermitage
LMon Lake Mongoulis
LPel Lake Pelto
LSal Lake Salvador
LMas Lake Washington
Lavs Lawson
Leev Leeville
Lock Lockport
Napo Napoleonville
NCro North Crowley
NMBa North Mallard Bay
NSta North Starks
Para Paradis
Area of
salt
dome
occur
rence
GC
GC
GC
GC
GC
GC
GC
GC
GC
GC
GC
GCGCGCGC
GC
GC
GC
GC
GC
GC
GCGC
GC
GC
GCGC
GC
GCGC
County
or
Parish
IBERIA
IBERIA
IBERVILLE
ACADIA
CALCASIEU
ST MARY
JEFFERSON
JEFFERSON DAVIS
IBERIA
ACADIA
JEFFERSON
LAFOURCHE
LAFOURCHE
LAFOURCHE
LAFOURCHE
TERREBONNE
ST MARTIN
PLAQUEMINES
ST MARTIN
TERREBONNE
ST CHARLES
PLAQUEMINES
ACADIA
LAFOURCHE
CALCASIEU
ASSUMPTION
ACADIA
CAMERON
CALCASIEU
ST CHARLES
Lati
tude
(deg.)
29.99
29.88
30.25
30.31
30.27
29.88
29.52
30.08
29.97
30.27
29.59
29.60
29.59
29.36
29.66
29.23
30.06
29.56
30.17
29.10
29.71
29.35
30.23
29.26
30.22
30.02
30.25
30.01
30.39
29.87
Longi
tude
(deg.)
91.70
91.86
91.65
92.59
93.04
91.59
90.03
92.81
91.97
92.58
90.06
90.61
90.54
90.19
90.18
90.51
91.49
89.90
91.53
90.67
90.27
89.77
92.41
90.20
93.32
91.11
92.28
92.64
93.66
90.46
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
11 -- -- -- 16
8-- -- 11 10
8-- -- -- -- 110
11
8
10 16 110
10
7
110 0 0 0
3 5 530 20
3 3 3 525
3 3 3 3 3 3 3 3 3 3 3 3
15
3 3 3
35
3
403
Depth
Depth
to
to cap
salt
rock
(feet)
(feet)
805 -
1078
.. ..
7902
10315 _. __ 31 -'
530
2512
1900
13947 __ -- __ --
753
721
12780
1400
904
6915
1982
1487
11270
1565
1094
16850
3899
3789
8160
657
415
14856
15754
9031
13538
Dla- Volume
meter (cubic
Data
(miles) miles)
sources
0.50
2.1
AMI--H-L
--I L-
--I L-
-M
0.50 AMI--H-L-
AMI--H-L-
--I L-
--I L-
0.50
2.4
A-I--H-L-
0.50
1.5
AMI--H-L-
A-I--H-L-
"I- L-
--I--
--I L-
--I L-
0.50
1.3
AMI--H-L-
AM H-L-
0.50
0.90 AMI--H-L-
0.25
0.50 AMI--H-L-
0.50
1.7
AMI-NH-L-
--
A----H-L-
1.3
14.5
AMI-NH-L-
A
0.33
1.3
AMI--H-L-
1.0
0.60 A H-L-
2.0
7.7
AMI--H-L-
AM H-L-
AMI---hL-
AM H-L-
AMI--H-L-
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of d
ata-
-Con
tinue
d
Map
code
PPra
Plal
Pla2
Pla3
PBob
PBar
Pota
QBay
Race
Roan
to
Ox
Se28
Sorr
SS2B
STLa
SGab
SMtl
SMar
SMyl
SMy2
Scar
Stel
SMin
SwLa
Terl
Ter2
Ter3
Ter4
Ter5
Ter6
Ter7
Dome
name
Pine Prairie
Plaquemines
1Plaquemines 2
Plaquemines
3
Plumb Bob
Port Barre
Potash
Quarantine Bay
Raceland
Roanoke
Section 28
Sorrento
South Section 28
South Tigre Lagoon
St.
Gabriel
St.
Martin 1
St.
MartinvilLe
St.
Mary 1
St.
Mary 2
Starks
Stella
SuLpher Mines
Sweet Lake
Terrebonne 1
Terrebonne 2
Terrebonne 3
Terrebonne
4Terrebonne 5
Terrebonne 6
Terrebonne 7
Area of
salt
dome
occur
rence
GC
GC
GC
GC
GC
GC
GCGCGC
GC
GCGC
GC
GC
GC
GC
GC
GC
GC
GC
GC
GCGC
GC
GC
GCGC
GC
GCGC
County
or
Parish
EVANGELINE
PLAQUEMINES
PLAQUEMINES
PLAQUEMINES
ST MARTIN
ST LANDRY
PLAQUEMINES
PLAQUEMINES
LAFOURCHE
JEFFERSON DAVIS
ST MARTIN
ASCENSION
ST MARTIN
IBERIA
IBERVILLE
ST MARTIN
ST MARTIN
ST MARY
ST MARY
CALCASIEU
PLAQUEMINES
CALCASIEU
CAMERON
TERREBONNE
TERREBONNE
TERREBONNE
TERREBONNE
TERREBONNE
TERREBONNE
TERREBONNE
Lati
tude
(deg.)
30.
29.
29.
29.
30.
30.
29.
29.
29.
30.
30.
30.
30.
29.
30.
30.
30.
29.
29.
30.
29.
30.
29.
29.
29.
29.
29.
29.
29.
29.
76 61 31 89 34 53 51 42 71 29
21 17
17
81 26 35 13 61
83
26
81 25 97 56
50 45 41 48 48 37
Longi
tude
(deg.)
92
89 89 89 91 91 89 89 90 92 91 90
91
91 91 91 91 91
91
93 90 93 93 91 91 91 90 90 90 90
.44
.80
.55
.79
.76
.91
.69
.50
.51
.73
.76
.80
.81
.93
.05
.91
.84
.50
.58
.62
.01
.41
.14
.09
.08
.07
.97
.84
.81
.64
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
11 -- -- -- 16
8
110 8 0
11 10 0 0
15 --
0
10
0 11 8-- -- -- -- -- -- --
65 3 3 3 3
30
3 3 325
3 3 5 310 15
5 3 3
30
3 5 3 3 3 3 3 3 3 3
Depth
to
salt
(feet)
346 -- -- --
8586
3642
1065
12770
8170
11585
1181
1717
14061
14200
11230 __
11205
1538
13190
1460
8560 -- -- -- -- -- -- --
Depth
to cap
Dla- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
0 1.5
2.9
A -H-L-
--I- L-
--I----L-
..I.
..-L
-1.0
0.20 AMI--H-L-
3551
1.0
6.5
AMI--H-L-
519
0.50
1.0
A----H-L-
--I L-
1.0
0.03 AMI--H-L-
AMI--H-L-
730
0.66
2.3
AMI--H-L-
1568
0.50
5.1
AMI--H-L-
2.0
--
AM---H-L-
AMI--H-L-
--I- -
AMI--H-L-
_-!--- -L-
.-I......
1157
0.50
2.2
AMI--H-L-
2'.0
--
A-I--H-L-
390
0.50
1.1
AM H-L-
0.50
--
A----H-L-
._! -L-
--I----L-
--I----L-
--I----L-
--I----L-
.-!-_.. L-
--I----L-
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
--C
onti
nued
to
Area of
aalt
dome
Map
Dome
occur-
code
name
rence
TerS Terrebonne 8
TiBa TLmballer Bay
Vale Valentine
Veni Venice
Verl Vermilion 1
VBay Vermilion Bay
Vlnt Vlnton
Wlal Weeks Island
Wels Welsh
WBR1 Weat Baton Rouge
1
WeBa West Bay
WCBB West Cote Blanche Bay
WHac West Hackberry
WCas White Caatle
Wood Woodlavn
Crov Crowvllle
DPor Duck Port
Foul Foules
FNec Ft.
Necessity
Glib Gilbert
Neve Newellton
NTal North Tallulah
Sing Singer
SBay Snake Bayou
Some Somerset (Ashwood)
SCol South Coleman(Coleman)
Tall Tallulah(South Tallulah)
WaBa Walnut Bayou
Area Arcadia
Biat Bistineau
GC
GC
GC
GC
GC
GCGC
GCGC
GC
GCGC
GC
GCGC
M M M M M M M M M M M M M NL
NL
County
or
Pariah
TERREBONNE
LAFOURCHE
LAFOURCHE
PLAQUEMINES
VERMILION
IBERIA
CALCASIEU
IBERIA
JEFFERSON DAVIS
WEST BATON ROUGE
PLAQUEMINES
ST MARY
CAMERON
IBERVILLE
JEFFERSON DAVIS
FRANKLIN
MADISON
CATAHOULA
FRANKLIN
FRANKLIN
TENSAS
MADISON
MADISON
TENSAS
TENSAS
MADISON
MADISON
MADISON
BIENVILLE
WEBSTER
Lati
tude
(deg.)
29.45
29.09
29.61
29.24
29.93
29.69
30.15
29.80
30.24
30.45
29.12
29.70
30.00
30.12
30.29
32.32
32.39
31 .83
32.02
32.13
32.09
32.44
32.32
32.18
32.17
32.27
32.34
32.42
32.51
32.50
Longi
tude
(deg.)
90
90
90
89
92 91 93 91 92 91 89 91 93 91 92 91 91 91 91 91 91 91 91 91 91 91 91 91 92 93
.53
.28
.44
.41
.49
.92
.60
.81
.90
.32
.38
.80
.36
.25
.94
.61
.04
.58
.76
.61
.26
.18
.33
.43
.31
.16
.21
.07
.89
.36
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
9 9 10 11 11 11
8--
9 910 10
0 6 012
0 5 3 0 2 0 3 3 3
13
3 0
3 3 3 3 3 3 3 5205 3 3 3 3
30 65 65 40 50 60 65 65 60 50 60 65 65 65
320
170
Depth
to
aalt
(feet)
6430
6575
1328
265
700 43
6315 --
8280
7545
1200
1693
10726
800
5345
6013
4988
1778
4123
4537
4197
5989
4073
3400
3023
2740
1400
1500
Depth
to cap
rock
(feet)
-- --
384 0-- -- __ -- -- -- --
572 --
5900
4934
1428
3968
4372
3950 --
3993
3352 --
2660
1282
1375
Dia
meter
(miles)
1.5
0.50
0.50
0.50
0.50
1.0
-- -- 0.50
0.20
1.3
0.50
-- 1.0
-- -- -- 1.0
_:.
-- -- -- __ -- -- 1.5
1.5
Volume
(cubic
Data
mile
s)
aourcea
--I L-
4.0
AMI-NH-L-
1.2
AMI--H-L-
3.7
AMI-NH-L-
--I L-
2.9
AMI--H-L-
5.5
AM H-L-
6.1
-MI--H-L-
AMI--H-L-
--I L-
0.10 AMI--H-L-
0.20 AMI--H-L-
1.5
AMI--H-L-
1.3
AMI--H-L-
AM H-L-
A --h-l
h-L
-M h-l
h-l
A -h-l
A h-l
A h-l
A --h-l
A h-l
A-- h-l
A ---h-l
A h-l
A h-l
A h--
A-- h-l
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of d
ata-
-Con
tinu
ed
Map
code
BLak
CeCr
Cher
Chnt
CBra
Drak
Gibs
King
Mlla
Mind
Pack
Pric
Prot
Rayb
Sike
Vach
Winn
BMar
21 31 45 CoPo
Creo
115
118
126
139
14 155
Area of
salt
dome
County
Dome
occur-
or
name
rence
Parish
Black Lake
Castor Creek
Cedar Creek
Chester (Lonnie)
Chestnut
Coochie Brake
Drake
Gibsland
King
Mllam
Minden
Packton
Price
Prothro
Rayburn
Sikes
Vacharie
Winnfield
Bay Marchand
Breton Sound Block 21
Breton Sound Block 31
Breton Sound Block 45
Coon Point
Creole
East Cameron Block 115
East Cameron Block 118
East Ca
reer
on Block 126
East Cameron Block 139(152)
East Cameron Block 14
East Cameron Block 155
NL
NATCHITOCHES
KL
WINK
NL
WINK
KL
WINK
NL
NATCHITOCHES
NL
WIKN
KL
WINN
NL
BIENVILLE
NL
BIEKVILLE
NL
WINK
NL
WEBSTER
NL
WINN
NL
WINK
NL
BIENVILLE
KL
BIENVILLE
KL
WINN
NL
BIENVILLE
NL
WIKN
OL
OL
OL
OL
OL
OL
OL
OL
OL
OL
OL
OL
Lati
tude
(deg.)
31
31 31 32 32 31 32 32 3232 32 31 32 32 32 32 32 31 29 29 29 29
29 29
29 29 29 29
29 28
.90
o o
. O J
.90
.15
.09
.79
.02
.55
.26
.14
.62
.83
.11
.20
.24
.04
.46
.91
.07
.59
.57
.47
.08
.75
.16
.12
.11
.02
.58
.95
Longi
tude
(deg.)
92.
92.
92.
92.
92.
92.
92.
93.
93.
92.
93.
92.
92.
93.
92.
92.
93.
92.
90.
89.
89.
89.
91.
93.
92.
92.
92.
92.
92.
92.
98 0 £
J O 60 31 95 80 87 11 16 61 19 58 85 01 93 52 18 68 15 13 23 17 01 19
86 98 68 89 90 98
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
--
5 0 0 3 513 130 3 0 3 3 5 0 3 610 -- __ -- 10
8
11 10
9 9--
0
120
90120
180
190
170
150
250
200
190
290
140
150
220
200
170
210
140
-35
-15
-10
-20 -5
0-65
-70
-65
-80 -5
-85
Depth
to
salt
(feet) --
750
4840
2450
2338
850
885
172
4430
1912
6425
700
600
115
4931
777
200
2100 --
__ --
4945
11965
378
2930
7677
9244 --
11712
Depth
to cap
Dia- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
--
500
4350 --
2088
250
612
161
4147
1190
6266 __ --
0
4435
658 0----
__ -- -- --
338 __ -- -- -- --
-M- L-
0.75
--
-M h-i
A h-i
A h-1
1.0
--
AM h-i
1.0
--
A --h-i
A --h-i
0.75
--
A h-i
A h-i
A H-L-
AM h-1
0.75
--
A h-i
1.0
--
A-----h-l
0.50
--
A --h-i
A h-i
1.0
--
A h-i
0.50
--
AM h-i
-MI-NH-L-
-MI- L-
-M L-
-MI- L-
0.20
3.4
-MI-NH-L1
-MI-NH-L-
1.0
--
-MI-N-h-i
-MI-N-hL-
0.50
2.7
-MI-NH-L-
-MI-NHh-i
--I L-
-MI-N-h-1
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of d
ata-
-Con
tinue
K)
Map
code
158
160
17 185
187
189
195
224
229
231
234
33 64 71 81 89 9 245
257
261
265
271
286
293
309
321
325
328
334
338
Dome
name
East
Eaat
East
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
East
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Eaat
Camecon
Camecon
Cameron
Camecon
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Area of
aalt
dome
County
occur-
or
rence
Pariah
Block 158(151)
Block 160
Block 17
Block 185
Block 187(176)
Block 189
Block 195
Block 22A
Block 229
Block 231
Block 23A
Block 33
Block 64(49,62)
Block 71
Block 81
Block 89
Block 9
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
245
257
261
265
271
286
293
309
321
325
328
334
338
OL
OLOL
OLOL
OL
OL
OL
OLOL
OLOLOL
OLOL
OLOLOLOL
OL
OL
OL
OL
OL
OL
OL
OLOL
OLOL
Lati
tude
(deg.)
28 28 29
28 28 28
28 28 28 28 28 2929 29 29 29 29 28
28 28
28 28 28
28 28 28 28 28 28 28
.94
.94
.58
.83
.83
.81
.76
.65
.60
.63
.62
.54
.38
.33
.30
.29
.63
.57
.51
.48
.45
.47
.39
.33
.27
.23
.22
.19
.16
.11
Land-
surface
or aea-
Depth
Longi-
Dome
floor
to
tude
top
altitude
aalt
(deg.)
layer
(feet)
(feet)
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
92.
84
9
74
077 74 84
9
89
980 90 89
80 67 85 96 70 97 72 90 99 74 92 87 63 73 74 68 80 64 71 98 83
-85
5830
-85
10845
-5
-100
-100
6946
-100
7450
-110
-120
-130
-130
-130
-15
-35
-40
-50
-50 0
-130
-150
-150
-160
-150
-170
-180
-190
-210
-220
-230
-260
-290
Depth
to cap
Dia- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
aourcea
-MI-N-h-l
-MI--H-L-
_MI- L-
-MI-N I
-MI-NH---
-MI-NH---
_MI L-
-MI L-
-MI-N---1
_M _L-
_M
_MI L_
_Ml L-
--I L-
-MI L-
-MI L-
-MI L-
-MI L-
--I ------
-MI L-
--
_.
-MI L-
_MI L-
-MI
-MI-H
-MI-N I
-M L-
-MI-N I
_M L-
_M -L-
-M --L-
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
--C
onti
nued
Map
code
359
367
371
373
126
28 175
ISA
188
203
205
208
231
238
246
258
32 77 89 273
276
292
296
300
330
342
357
361
363
380
Dome
name
Area of
salt
dome
occur
rence
East Cameron S.
Block 359
East Cameron S. Block 367
East Cameron S. Block 371
East Cameron S. Block 373
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Eugene Island
Block 126
Block 128
Block 175
Block 184
Block 188
Block 203
Block 205
Block 208
Block 231
Block 238
Block 246
Block 258
.Block 32
Block 77
Block 89(110)
S. Block 273(272)
S. Block 276
S. Block 292
S. Block 296
S. Block 300
S. Block 330
S. Block 342
S. Block 357
S. Block 361
S. Block 363
S. Block 380
OL
OL
OLOL
OL
OL
OL
OLOL
OL
OL
OL
OLOLOL
OL
OLOL
OL
OL
OL
OL
OL
OL
OL
OLOL
OL
OLOL
County
Lati-
or
tude
Parish
(deg.)
28
28
27 27 28 28 28 28 28 28 28 2828 28 28
28
29 29
2928 28
28 28 28 28 28 28
28 28 28
.05
.01
.95
.96
.98
.95
.80
.77
.72
.68
.66
.68
.60
.54
.50
.48
.29
.17
.08
.44
.46
.38
.34
.35
.23
.23
.14
.11
.22
.01
Longi
tude
(deg.)
92.71
92.82
92.98
92.86
91.47
91.64
91.73
91.60
91.40
91.77
91.65
91.49
91.44
91.53
91.84
91.40
91.53
91.52
91.74
91.61
91.46
91.70
91.58
91.40
91.69
91.49
91.80
91.66
91.64
91.77
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
-- -- 11 10 11 10 10 --
9109 0
-- --
0
10 10
0 0 0 -- -- -- -- -- -- -- --
-400
-410
-460
-540
-45
-60
-85
-85
-75
-110
-110
-100
-120
-140
-150
-150
-10
-25
-50
-170
-160
-180
-210
-220
-230
-240
-270
-320
-240
-400
Depth
to
salt
(feet)
-- --
275
3558
201
1156
2180 --
7140
3948
8900
12825 -- --
16850
1685
2610
8913
12230
12126 -- .. -- -- .. -- -- --
Depth
to cap
Dla-
rock
meter
(feet) (miles)
-- __
0.66
2.0
0.33
0.66
1.5
--
3.0
1.0
-- -- -- _- ..
1.0
2.0
1.0
0'.3
3__ .. -- -- __ __ __ __ __
Volume
(cubic
Data
miles)
sources
-MI-N--L-
-MI-N 1
-MI----L1
-MI-N 1
3.0
-MI-HU-L-
5.3
-MI-NH-L-
-MI-NH-L-
3.2
-MI-NH-L-
13.4
-MI-NH-L-
-M --L-
-MI-NH-L-
1.9
-MI-NH-L-
------h--
-MI-NH-L-
-MI-N--L-
-M --L-
-MI--H-L-
5.2
-MI-NH-L-
17.1
-MI-NH-L-
-MI-NH-L-
-MI-NH-L-
-MI-NH-L-
-M-----L-
-M--N I
-MI- L-
-M-- L-
-MI-N---1
-MI-N--L-
-M---
-MI-M--L-
Tab
le 2
.--M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
Con
tinu
ed
Map
code
383
385
16 18 72 76 112
115
119
144
35 41 46 52 69 73 288
290
299
306
Rial
108
112
113
139
154
169
207
208
223
Area of
salt
dome
Dome
occur-
name
rence
Eugene Island S. Block 383
Eugene Island S. Block 385
Grand
Grand
Grand
Grand
Grand
Grand
Grand
Main
Main
Main
Main
Main
Main
Main
Main
Main
Main
Main
Isle Block 16 -'
IsLe Block 18(9)
Isle Block 72
Isle Block 76
Isle S.
Block 112(106)
Isle S. Block 115
Isle S.
Block 119
Pass Block 144
Pass Block 35
Pass Block 41
Pass Block 46
Pass Block 52
Pass Block 69
Pass Block 73
Pass S.
and E. Block 288
Pass S.
and E. Block 290
Pass S.
and E. Block 299
Pass S. and E.
Block 306
Rabble Island
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Shoal Block 108
Shoal Block 112
Shoal Block 113
Shoal Block 139
Shoal Block 154
Shoal Block 169
Shoal Block 207
Shoal Block 208
Shoal Block 223
OL
OL
OL
OL
OL
OL
OLOL
OLOL
OL
OLOLOL
OL
OL
OL
OL
OL
OL
OL
OLOL
OL
OL
OL
OLOLOL
OL
County
Latt
er
tude
Parish
(deg.)
28.
28.
29.
29.
28.
28.
28.
28.
28.
29.
29.
29.
29.
29.
29.
29.
29.
29.
29.
29.
29.
28.
28.
28.
28.
28.
28.
28.
28.
28.
02 05 14 18 80 75 37 31 2526 44 40 40 37 22 25 22 14 28
20 43 87 81 87 78 72 66 56 51 50
Longi
tude
(deg.)
91 91 89 89 90 90 90 90 90 88 89 89 89 89 89 88 88 88 88 88 91 91 90 90 90 91 91 90 90 91
.65
.48
.99
.90
.08
.04
.01
.04
.10
.71
.44
.00
.21
.27
.12
.91
.39
.59
.77
.56
.59
.14
.94
.86
.78
.23
.03
.98
.89
.30
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
_ _
._ 10 10 10 __ 0 __ __ 9
__ --
8__ -- ._ -- --
0 0
11 -- --
9-- 10 -- -- 10 --
-420
-460
-40
-35
-140
-190
-390
-480
-500
-210 3
-45
-10 -3
0
-55
-460
-560
-150
-500 3
-35
-35
-25
-40
-65
-65
-100
-100
-140
Depth to
salt
(feet)
_ _
--
1780
2265
6188 --
9630 -- --
5170 __ --
10168 ._ -- __ -- __
9045
9100 15 -- --
8207 --
2916 __ --
3320 --
Depth
to cap
Dia- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
_M
-MI-N--L-
1952
1.0
11.6
-MI-NH-L-
1773
1.0
4.7
-M--NH-L-
-MI-N-hL-
-MI L-
-MI-N-h-1
-MI 1
-M
-MI-NH-L-
_MI L-
-MI -L-
H-L-
-M L-
--I L-
-MI L-
__! i
-MI-N--L-
-MI-NH-L-
-MI-NH-L-
--
--
-MI-NH-L-
_M- -L-
_M -L-
1.0
1.0
-MI-NH-L-
-M L-
2.0
3.8
-MI-NH-L-
-M --L-
-M L-
-MI-NH-L-
_M L-
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
--C
ontin
ued
N)
Map
code
230
28
32 72 239
253
271
274
278
280
284
291
296
304
322
329
331
336
340
343
365
367
38 41 48 57 6 66 9 207
Dome
name
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Ship
Area of
aalt
dome
County
occur-
or
rence
Pariah
Shoal Block 230(204)
Shoal Block 28
Shoal Block 32
Shoal Block 72
ou
rt . 1
C
ni. .1.
ono«i D
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
Shoal S
South Marsh
South Marah
South Marsh
South Marah
South Marah
South Marah
South Marah
South Marah
a LUUA.
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
. Block
239
253
271
274
278
280
284
291
296
304
322
329
331
336
340
343
365
367
la .
Block 38
la.
Block 41
Is.
Block 48
la.
Block 57
la.
Block 6(7)
la.
Block 66
la.
Block 9(8)
la.
H.Block 207
OL
OL
OL
OL
OL
OLOLOL
OL
OL
OL
OL
OLOL
OL
OL
OL
OL
OLOL
OL OL
OL
OL
OL OL
OL
OL OLOL
Lati
tude
(deg.)
28
29
29 28
*> Q z o
28 28 28
28 28 28 28 28 28 28 28 28 28 28 28 28 27 28 28 28 28 28 28 28 29
.48
.13
.10
.97
.44
.37
.38
.33
.33
.32
.27
.24
.23
.23
.18
.15
.16
.11
.12
.12
.00
.99
.81
.80
.77 «t
.68
.99
.67
.98
.50
Land-
surface
or aea-
Depth
Longl-
Dome
floor
to
tude
top
altitude
salt
(deg.)
layer
(feet)
(feet)
91.
91.
91.
90.
90.
91.
91.
91.
91.
90.
90.
91.
91.
90.
91.
90.
90.
91.
91.
91.
91.
91.
91.
92.
91.
92.
91.
91.
91.
92.
06
9
18
30
1098
9 94
0
08 30 19
9
04 93 76 14 33 95 20 90 75 01 15 31 23 12 96
10
07
989
9
11
897
9
95
9
88
904
-120
9135
-5
-15
2538
-15
7545
-130
14380
-160
-180
-200
6707
-190
-190
-220
-250
-270
-260
-300
-410
-320
-470
-400
-390
-770
-950
-100
2278
-100
9180
-100
8010
-120
11670
-70
6050
-120
9870
-70
6281
0
Depth
to cap
Dia- Volume
rock
meter (cubic
Data
(feet) (milea) miles)
aourcea
-MI-NH-L-
-M-----L-
2375
0.66
4.6
-MI-NH-L-
0.40
0.30 -MI-NH-L-
__
-_
__
_____n_l _
-MI-N--L-
-M-----L-
-MI-NH-L-
--I-----1
-MI-H---1
-M----
-MI-N--L-
-M-- L-
-MI-N I
-M-------
-M----
-M----
-MI-----1
_M____
-M-- L-
_ _
_.
_M-------
-M-- --
-MI-NH-L-
1.0
--
-MI-NH-L-
-MI-NH-L-
-MI-NH-L-
2.0
--
-MI-NH-L-
-MI-NH-L-
-M--NH-L-
--I----L-
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of d
ata-
-Con
tinue
d
Map
code
214
218
261
269
107
115
130
142
153
167
181
184
187
190
202
73 76
79
19 27 57 62 65
69
70 79 89 96 20 23
Dome
name
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
South
Marah
Marah
Marah
Marah
Marah
Marah
Marah
Marah
Marah
Marah
Marah
Marah
Marah
Marsh
Marah
Marah
Marsh
Marah
Paaa
Paaa
Paas
Paas
Paas
Pass
Pass
Pass
Pass
Paas
Pelto
Pelto
Is.
N. Block
Is.
N. Block
Is.
N. Block
Is.
N. Block
Is.
S. Block
Is.
S. Block
Is.
S. Block
Is.
S. Block
Is.
S. Block
la.
S. Block
la.
S. Block
la.
S. Block
la.
S. Block
la.
S. Block
la.
S. Block
Is.
S. Block
Is.
S. Block
Is.
S. Block
Block 19
Block 27
Block 57
E. Block 62
E. Block 65
E. Block 69
E. Block 70
S. Block 79
S. Block 89
S. Block 96
Block 20(10)
Block 23
Area of
salt
dome
County
occur-
or
rence
Parish
214
218
261
269
107
115
130
142
153
167
181
184
187
190
202
73 76
79
OL
OL
OL
OLOL
OLOL
OL
OLOL
OL
OLOL
OLOL
OLOL
OL
OLOL
OL
OLOL
OL
OL
OL
OL
OLOLOL
Lati
tude
(deg.)
29 29 29 29 28 28 28 28 28
28 28 28 28 28 27 2828
28
29 28 28 29 29
29
28 28 28 28 28 28
.52
.44
.17
.13
.45
.37
.32
.27
.17
.12
.07
.01
.10
.05
.95
.61
.60
.57
.04
.96
.87
.08
.11
.04
.61
.76
.69
.61
.92
.83
Long I-
Dome
tude
top
(deg .
) layer
91 92 92 91 91 92 91 91 92 92 92 92 92 91 92 92 91
91
89 89 89 88 88
88
89 89 89 89 90 90
.97
.07
.14
0.89
.94
.07
.99
.90
.10
.14
.12
.10
.03
.89
.00
.11
10.94
.88
0
.04
.24
9
.39
.73
.85
.82
.40
.44
.42
.40
.71
11.62
Land-
surface
or sea-
Depth
floor
to
altitude
salt
(feet)
(feet)
0-5
-40
12420
-50
-170
-180
-200
-210
-260
-310
-340
-410
-310
-320
-460
-140
3565
-140
-140
14000
-40
-70
9390
-70
-570
-230
-550
-530
-250
-380
-530
-15
549
-35
Depth
to cap
Dla- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
-MI L-
-MI L-
-MI-N-hL-
-M L-
--I L-
-MI-N--L-
-MI-N--L-
-MI-N--L-
-MI-N
_H
-MI-N---1
-MI-N--L-
-MI-N 1
-MI-N I
-MI-N---1
3.0
--
-MI-NH-L-
"
"I -L-
-M--N
1.0
--
-MI-NH-L-
_-
-MI -L-
-MI-N--L-
-MI-N--L-
I
-MI-N--L-
_M
-MI-N--L-
-M
0.50
3.5
-MI-NH-L-
_
_ _
_
LIT
f
j-j
^ 1^
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
Con
tinu
ed
OJ
Map
coda
131
135
172
176
52 54 86 231
233
235
250
267
286
297
308
309
314
102
115
120
131
144
154
16 162
164
173
182
184
189
Dome
name
South Tlmballer
South Timballer
South TimbaLler
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmballec
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmbalier
South Tlmbalier
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Vermilion Block
Area of
salt
doma
County
occur-
or
rence
Parish
Block 131
Block 135
Block 172
Block 176
Block 52
Block 54
Block 86
S. Block 231
S. Block 233
S. Block 235
S. Block 250
S. Block 267
S. Block 286
S. Block 297
S. Block 308
S. Block 309
S. Block 314
102
115
120
131
144
154
16 162
164
173
182
184(200)
189(193)
OL
OLOL
OL
OL
OL
OL OL
OLOL
OLOLOLOL
OL
OL
OL
OLOLOL
OL
OL
OL
OL
OL
OL
OLOL
OLOL
Latl-
tuda
(deg.)
282828 28
28 28
28 28
2828 28 28 28 28 28 28 28 2929 29 29 28
9 Q
4_O
29 28
28 28
2828 28
.68
.64
.56
.54
.87
.84
.78
.39
.37
.39
.33
.27
.21
.17
.16
.14
.12
.18
.10
.10
.06
.97
.92
.52
.94
.83
.87
.83
.77
.82
Land-
surf ace
or sea-
Dapth
Longl-
Dome
floor
to
tude
top
altitude
salt
(deg.)
layer
(feet)
(feet)
90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 92 92 92 92 92
92 92 92 92 92 92 92 92
.15
9.26
10.61
.40
9
.51
.37
9
.22
10
.17
.30
.41
.48
.57
.16
.56
.23
.44
.69
.60
9.33
.52
10
.19
.51
.27
.43
.59
10
.44
11
.24
.59
.53
.24
9
-160
6635
-120
5300
-90
-120
8784
-30
-45
11380
-90
4100
-270
-220
-190
-210
-220
-510
-330
-570
-430
-390
-55
6820
-50
-60
3084
-60
-80
_ Q C
OD
0
-85
2990
-100
573
-95
-100
-110
-100
8043
Depth
to cap
Dla- Volume
rock
mater (cubic
Data
(feet) (miles) miles)
sources
1.5
--
-MI-NH-L-
0.25
6.6
-MI-NH-L-
_M -L_
-MI-NH-L-
-M L-
1.8
--
-MI-NH-L-
1.5
2.1
-MI-NH-L-
-MI-N 1
-MI-N 1
-MI-M 1
_M _______
-MI-N 1
_M _______
_M __ _--
-M -------
_M -_--___
-MI 1
1.5
--
-MI-NH-L-
-M- -L-
0.66
2.20 -MI-NH-L-
--
--
-M L-
-M L-
1
-M L-
-M--NH-L-
2.0
9.4
-MI-NH-L-
-MI -
_M L_
-MI-N--L-
2.
5 --
-MI-NH-L-
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of
data
--C
ontin
ued
Map
code
218
228
245
250
26 39 52
57 67 89
255
265
271
288
305
313
320
340
348
370
380
384
405
410
413
110
118
146
149
165
Dome
name
Vermilion
VermlL Ion
VermlL Ion
Vermilion
Vermilion
Vermilion
Vermilion
Vermll Ion
Vermilion
Vermilion
Vermilion
Vermilion
Vermilion
Vermilion
Vermilion
Vermilion
Vermll ion
Vermilion
Vermilion
Vermll ion
Vermilion
Vermilion
Vermilion
Vermilion
Vermilion
Area of
salt
dome
County
occur-
or
rence
Pariah
Block 218(226)
Block 228
Block 245
Block 250
Block 26
Block 39
Block 52
Block 57
Block 67
Block 89
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
West Cameron Block
West Cameron Block
West Cameron Block
Neat Cameron Block
West Cameron Block
255
265
271
288(289)
305
313
320
340
348
370
380
384
405
410
413
110
118
146
149
165
OLOL
OLOL
OL
OL
OL
OL
OL
OL
OLOLOL
OL
r-OL
OL
OLOL
OLOL
OL
OL
OL
OL
OL OLOL
OL
OLOL
Lati
tude
(deg.)
28 28
28 28
29 29 29 29 29
29 28 28 28 28 28 28
28 282828 28 28 27 27 27 29 29 29 29 29
.68
.64
.59
.58
.45
.42
.35
.37
.28
.26
.55
.47
.49
.41
.36
.32
.30
.21
.17
.09
.04
.05
.97
.98
.95
.51
.48
.48
.43
.37
Land-
aurface
or aea-
Depth
Longi-
Dome
floor
to
tude
top
altitude
aalt
(deg.)
layer
(feet)
(feet)
92 92 92 92 92 92 92
92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 92 93 93 93 93 93
.40
10
.33
.45
9.23
.38
.55
.18
.39
.40
.31
.32
.42
.19
10.30
9.45
10
.22
.56
.42
.50
.53
.26
.46
.38
.60
.19
.46
.65
.29
.42
.54
-120
3530
-130
-130
10070
-140 -3
-15
-15
-10
-15
-15
-150
-160
-160
5190
-170
7355
-180
4500
-190
-190
-230
-260
-350
-390
-400
-530
-490
-610
-25
-25
-20
-30
-40
Depth
to cap
Dla- Volume
rock
meter (cubic
Data
(feet) (mllea) mllea)
aourcea
-MI-H-hL-
-M-- L-
0.50
--
-MI-NH-L-
-MI- L-
_M --L-
_M L.
-M-----L-
-M L-
-M -_L-
--I-- 1
_M-- L-
-M-- L-
-MI-NH--1
2.0
--
-MI-NH--1
-MI-H-h-1
_M-- L-
-MI-H--L-
-MI-N--L-
-MI-N--L-
-MI-N--L-
--
--
-M-- L-
-MI-N---1
-MI-H 1
-HI-H---1
--I-H---1
_M-------
-M-----L-
-MI- L-
_MI -L-
-MI- L-
Tab
le 2
.--M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of
data
Co
nti
nu
ed
U) o\
Map
code
17 180
19 192
225
229
245
257
259
279
45 63 68
71 455
474
480
493
504
536
548
575
594
629
639
653
656
662
289
306
Dome
name
West
West
West
West
West
West
West
West
West
West
Weft
West
West
West
West
West
West
West
West
West
West
West
West
West
West
West
West
West
West
West
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Cameron
Block 17
Block 180
Block 19
Block 192
Block 225
Block 229
Block 245
Block 257
Block 259
Block 279
Block 45
Block 63
Block 68
Block 71
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
S. Block
W. Block
W. Block
Area of
salt
dome
County
occur-
or
rence
Pariah
455
474
480
493
504
536
548
575
594
629
639
653
656
662
289
306
OL
OL
OL
OLOL
OL
OL
OLOL
OL OLOL
OLOLOL
OL
OLOL
OL
OL
OLOL
OL
OLOL
OL
OLOLOLOL
Lati
tude
(deg.)
29.
29.
29.
29.
29.
29.
29.
o o£o
29.
28.
29.
29.
29.
29.
28.
28.
28.
28.
28.
28.
28.
28.
28.
28.
27.
27.
27.
27.
29.
29.
67 38 69 23 23 19
05
97 03 81 65 67 65
57 64 53
51 48 44 31 27 20 15 03 97»
92 8985 35 21
Land-
surface
or aea-
Depth
Long I-
Dome
floor
to
tude
top
altitude
salt
(deg.)
layer
(feet)
(feet)
93 93 93 93 93 93 93
93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93 93
.70
.20
.65
.04
.25
.22
.28
1 £
_ _
, zo
--
.13
.02
.61
.35
.03
.14
.09
.42
.19
.44
.21
.13
.36
.20
.34
.22
.21
.42
.31
.36
.62
.63
10
_3
-35 0
-55
-55
-60
-75
Q C
_-o
3
---8
0-100 -5 -5
0-5
-120
-140
-130
-150
-150
-180
-190
-230
-250
-320
-370
-420
-470
-500
-40
-55
2700
Depth
to csp
Dia- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
-MI----L-
-Ml- L-
_MI L-
-MI -
-MI----L-
-MI- L-
--
-M--N-
__!__.
_M.
-M-- L-
-HI -L-
-M-----L-
-HI- L-
-MI----L-
-M- LI
-MI-N -
-MI-N--L-
-_!_..
-M L-
-M-- I
-MI----LI
-M --L-
-M- -L-
-M---
-M-----L-
-MI-----1
-MI-N I
-M-------
_MI____L_
-MI-N-h-l
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
--C
onti
nued
OJ
Map
code
337
356
376
383
386
397
421
104
117
20 30 41 58 133
137
143
148
150
151
152
Area of
salt
dome
County
Dome
occur-
or
name
rence
Pariah
West Cameron W. Block 337
West Cameron W. Block 356
West Cameron W. Block 376
West Cameron W. Block 383
West Cameron W. Block 386
West Cameron W. Block 397
West Cameron W. Block 421
West Delta Block 104
West Delta Block 117
West Delta Block 20
West Delta Block 30
West Delta Block 41
West Delta Block 58
West Delta S.
Block 133
West Delta S.
Block 137(138)
West Delta S. Block 143
West Delta S.
Block 148
West Delta S.
Block 150
West Delta S.
Block 151
West Delta S.
Block 152
OLOLOL
OLOL
OL
OL
OLOLOL
OLOLOL
OL
OL
OL
OLOL
OL
OL
Land-
surface
or sea-
Depth
Latl-
Long!-
Dome
floor
to
tude
tude
top
altitude
salt
(deg.)
(deg.)
layer
(feet)
(feet)
29 28 28 28 28 OR
£O
28
28 28 29 29 29 28 28 28 28 28 28 28 28
.05
.98
.89
.89
.84
7 R
/ O
.68
.86
.81
.20
.16
.11
.99
.74
.67
.70
.64
.65
.65
.60
93.
93.
93.
93.
93.
93.
93.
89.
89.
89.
89.
89.
89.
89.
89.
89.
89.
89.
89.
89.
66 66 62 29
916
11
£ O
O«£
~ ~
57
62 80 56 65
10
75 52 72
982
10
56 57
1066 72 74
0
-70
-80
-90
-90
5000
-100
800
-100
-110
-100
-210
-10
-35
2778
-55-
-40
-270
8496
-360
5790
-350
-510
950
-460
-430
-600
13110
Depth
to cap
DLa- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
-MI-N---1
_MI------
-MI-N---1
-MI-N-h--
-MI-N-hL-
-- ---1
---- -1
-M-----L-
-M --L-
_M_.
L-
2.0
1.6
-MI-NH-L-
--
-MI----L-
--
-M-----L-
1.0
--
-MI-NH-L-
-MI-NH-L-
-M-------
-MI-N-h-1
_M____.__
-M-- -
-MI-NH-L-
MISSISSIPPI
ALLe
Arm
Brow
Brui
Burn
Alien
Arm
Brownsville
Brulnsburg
Burns
M
COPIAB
M
LAWRENCE
M
HINDS
M
CLAIBORNE
M
SMITH
31 31 32 31 32
.79
.52
.47
.93
.12
90.
90.
90.
91.
89.
64
502
1539
0
13
6
56
0
380
2774
240
1930
230
4689
110
2016
420
11310
2447
--
--
AM----h--
1412
1.0
--
AM----h--
4512
--
--
A --h--
1629
1.0
--
-M---H---
A --h--
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of
data
--C
ontin
ued
UJ co
Map
Dome
code
name
Byrd Byrd
Carm Carmicheal
Cars Carson
Case Caseyville
Cent Centerville
CLin County Line
CyCr Cypress Creek
D'Lo D'Lo
Dont Dont
DCre Dry Creek
EBen Eagle Bend
Edwa Edwards
Elli Ellisville
Emin Eminence
Eucu Eucutta
Gall Galloway
Glas Glass
Glaz Glazier
Gran Grange
Gwin Gwinville
Hall Halifax
Haze Hazelhurst
Held Heidelberg
Herv Hervey
Hiwa Hiwanee
King Kings
Kola Kola
Lamp Lampton
Laur Laurel
Lear Learned
Area of
salt
dome
occur
rence
M M M M M M M M M M M M M M M M M M M M M M M M M M M
County
or
Parish
GREENE
HINDS
TVWWCflHT
r\ A \t T C
JEif r EiKaUH
UAVla
LINCOLN
JONES
GREENE
P17PP V
r £it\I\ X
SIMPSON
COVINGTON
COVINGTON
WARREN
HINDS
JONES
COVINGTON
WAYNE
CLAIBORNE
WARREN
PERRY
JEFFERSON DAVIS
JEFFERSON DAVIS
HINDS
COPIAH
JASPER
CLAIBORNE
WAYNE
WARREN
COVINGTON
MARION
JONES
HINDS
Lati
tude
(deg.)
31.23
32.08
31.60
31.67
31.70
31.43
31.14
32.03
31.72
11
c c
J A
* CO
32.55
32.31
31.61
31.63
31.79
32.07
32.21
31.33
31.68
31.68
32.49
31.93
31.87
31.85
31.8
5.
32.41
31.66
31.22
31.69
32.22
Longi
tude
(deg.)
88.68
90.48
no
i i
O 7 .
I 1
90.68
89.34
88.52
OQ
Q £
QO 7 O
89.89
89.45
no 11
o y
. i
A.
90.99
90.54
89.16
89.41
88.83
90.93
90.97
88.90
89.95
89.84
90.56
90.29
89.02
90.74
88.57
90.81
89.50
89.72
89.16
90.57
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
513
5 513 13
713 13
5 2 3 0 5 0 3 3 0 0 0 3 6 0
130 3 5 7 0 3
170
290
390
400
220
170
170
330
250
390 65
210
220
260
280
140 95
150
430
480
200
340
360
250
260
210
310
200
230
190
Depth
to
salt
(feet)
2058
2966
i n n £
JUOO
3035
2400
1343
1190
2250
2200
2100
4425
3026
14075
2440
11804
4432
4030
7685
15274
10000
4000
1850
9390
3547
13598
3845
3048
1647
12304
4437
Depth
to cap
Dia-
rock
meter
(feet) (miles)
1440
1.0
2700
oono
_ _
«£ J AO
2032
1288
990
1.0
2090
2032
4241
2775
13928
1964
11796
4348
3992
7476 --
3912
1430
9325
3326 --
3593
2218
1365 __
4430
Volume
(cubic
Data
miles)
sources
AM h--
A H
AM h--
AM h--
A --h--
A --h--
AM h--
A U
1~
A h--
A h--
A
A h--
A H
h--
A h--
AM H
AM H
A H
A h--
AM h--
AM H
AM h--
A H
A H---
AM h--
-M h--
A H
A h--
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of
data
--C
onti
nued
Map
Dome
code
name
Leed Leedo
McBr McBrlde
McLa McLaurln
Mldu Midway
Mont Montlcello
Mose Moselle
NHom New Home
Newm Nevman
ORld Oak Ridge
Oakl Oakley
Oakv Oakvale
Ovet Ovett
Peta Petal
.
Pren Prentlss
Rale Raleigh
Rchm Richmond
Rcht Rlchton
Rufu Rufus
Ruth Ruth
SChu Sardls Church
Sunr Sunrise
Tatu Tatum
Utlc Utlca
VPar Valley Park
Vlck Vlcksburg
Wess Wesson
YCre Yellow Creek
Area of
salt
dome
occur
rence
M M M M M M M M M M M M M M M M M M M M M M M M M M M
County
or
Parish
JEFFERSON
JEFFERSON
FORREST
LAMAR
LAURENCE
JONES
SMITH
WARREN
WARREN
BINDS
JEFFERSON DAVIS
JONES
FORREST
JEFFERSON DAVIS
SMITH
COVINGTON
PERRY
RANKIN
LINCOLN
COPIAH
FORREST
LAMAR
COPIAB
SHARKEY
WARREN
COPIAH
WAYNE
Lati
tude
(deg.)
31 31 31 31 31 31 31 32 32 32 31 31 31 31 31 31 31 32
31 31 31 31 32 32
32 31 31
.66
.76
.13
.29
.54
.53
.87
.21
.45
.24
. A6
. A9
. AO
.58
.96
.49
.36
.15
.AO
.82
.35
.16
.01
.67
.35
.72
.78
Longi
tude
(deg.)
90.87
90.81
89.28
89.51
90.17
89.32
89.33
90.78
90.72
90. A8
89. 9A
89.13
89.26
89.88
89.50
89. 5A
88.95
89.78
90.30
90.32
89.20
89.56
90.61
90.89
90.89
90.38
88.62
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
7 615
7 6
13
A 3 2 3 6 0
15 13 13
6 7 015 15 127 5 0 3
13
0
380
330
230
310
320
2AO
3AO
160
2AO
2AO
250
230
200
3AO
370
2AO
180
380
AOO
350
200
280
260 65
130
270
260
Depth
to
salt
(feet)
2065
2205
1933
2205
2757
2200
2595
5108
5062
263A
2696
13156
1739
2800
21AO
195A
722
12A85
2700
2000
59AO
1516
3135
12A2A
A386
3550
11422
Depth
to cap
rock
(feet)
1A28
1905
1708
1328
2253
2120
1832
5055 --
2615
1836 --
1235
25A8
1A90
1610
A97 --
2208
1AA1
5610
967
2630 --
A356
339A --
Dla- Volume
meter (cubic
Data
(mil
es)
mile
s)
sour
ces
AM-
AM----h--
--B
AM h--
AM-
AM-
AM-
AM-
A--
A--
A--
-M-
A--
AM-
AM-
A--
AM-
2.5
--
AM-
A--
AM-
AM-
AM-
1.0
--
AM-
A--
A--
A--
AM-
A--
---h
-----h--
h--
«. .
n***
h
h--
--B-
--
h--
--H-
-----h--
---h--
--B---
h--
h--
---h--
h--
---h--
h--
---h--
h--
--B---
---h--
---h--
--H---
Tab
le 2
.--M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
Co
nti
nu
ed
Map
Dome
code
name
Area of
salt
dome
occur
rence
County
or
Parish
Lati
tude
(deg.)
Longi
tude
(deg.)
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
Depth
to
salt
(feet)
Depth
to cap
rock
(feet)
Dia
meter
(miles)
Volume
(cubic
Data
miles)
sources
TEXAS
Beth Bethel
BoCr Boggy Creek
Broo Brooks
BrCr Brushy Creek
Bull Bullard
Butl Butler
Cone Concord
ETyl East Tyler
Elkh Elkhart
GCal Girlie Calduell
GSal Grand Saline
Hain Halnesville
Keec Keechi
LRue La Rue
Marq Marquez
MSyl Mount Sylvan
Oakw Oakwood
Pale Palestine
Sloe S Locum
Stee Steen
Whit Whltehouse
Alle Alien
Arri Arrlola
BaHL Barbers Hill
Bats Batson
ET
ETETET
V 7*
Ei 1 ET
ETET
ETET
ETET
ET
ETET
ET
ET
ETET
1? T
£ X ET
GC
GC
GCGC
ANDERSON
ANDERSON
SMITH
ANDERSON
CKfT TU
Dill in
FREESTONE
ANDERSON
SMITH
ANDERSON
SMITH
VAN ZANDT
WOOD
ANDERSON
0 PUrMPD O SMJ
nciI
fUCi
KaUt
i
LEON
SMITH
FREESTONE
ANDERSON
ANDERSON
CUT VII
onl in
SMITH
BRAZORIA
HARD IN
CHAMBERS
HARD IN
31 31 32 31
32
31 31 32 31 32 32 32 31
32
31 32
31 31 31 32 32
28 30 29 30
.89
.97
.17
.91
.17
.67
.91
.37
.59
.28
.66
.70
.85
.16
.23
.38
.56
.74
.63
.52
.23
.94
.24
.85*
.25
95.93
95.42
95.45
95.61
95.29
95.86
95.69
95.25
95.63
95.40
95.69
95.36
95.70
AC
£.£.
73»OO
96.26
95.44
95.95
95.73
95.52
95.31
95.28
95.52
94 .24
94.87
94 .58
123 5 0
13
3 0 3 0 0 3 3 4 0 3 3
130 5
13 107
11
9
290
390
380
450
450
260
470
490
340
450
400
400
430
470
390
450
350
310
400
420
470 530 25 65
1600
1829
220
3570
527
312
6000
890
10165
6002
213
1155
300
4450
613
800
122
10200
300
535
1324
3929
1000
2050
1440
1629
195
3522
325 ..
800 -- --
171
1100
250 --
550
703
120 -- 75
485
760 --
350
1080
2.0
3.0
1.5
1.5
1.0
2.3
-- 3.0
-- -- 1.5
3.5
3.5
-- 1.8
2.0
0.66
-- 1.5
2.5
-- -- 1.3
1.5
8.0
11.0
5.5
3.1
3.0
1.5
1.3
4.3
-- -- 7.6
8.3
1.1
5.4
2.9
2.9
3.1
-- 1.9
2.5
0.80
1.0
5.1
3.2
AM-J-H
AM-J-H
A--J-H
AM-J-H---
AM-J-H
AM-J-H
A--J-H
A--J-H
j
A--J-H---
A--J-H---
AM-J--h--
-M -
A--J h--
AM-J-H
AM-J--h--
j
...
A J h
AMI--H---
AMI--H---
AMI--H---
AMI--H
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of
data
--C
ontin
ued
Map
Dome
code
name
BLCr Big Creek
BLHL BLg Hill
BRLd BLue RLdge
Boll Bollng
Bren Brenham
BMou Bryan Mound
CPol Cedar Point
Chal Chambers
1CILa Clam Lake
CLCr Clay Creek
Clem Clemens
DMou Damon Mound
Danb Danbury
DHL1 DavLs HL1L
Day
Day
Espe Esperson
Fann Fannett
FCro Fergusons Crossing
Gulf Gulf
Hank Hankatner
Hawk Hawkinsvllle
HIsl High Island
Hock Hockley
HMou Hoskins Mound
Hull Hull
Humb Humble
Jacl Jackson 1
Jffl Jefferson 1
Jff2 Jefferson 2
Jff3 Jefferson 3
Area of
salt
dome
occur
rence
GCGCGC
GCGC
GC
GCGC
GC
GC
GC
GC
GCGCGC
GCGC
GC
GC
GC
GC
GC
GC
GCGC
GC
GCGC
GCGC
County
or
Parish
FORT BEND
JEFFERSON
FORT BEND
UHARTON
WASHINGTON
BRAZORIA
CHAMBERS
CHAMBERS
JEFFERSON
WASHINGTON
BRAZORIA
BRAZORIA
BRAZORIA
LIBERTY
MADISON
LIBERTY
JEFFERSON
BRAZOS
MATAGORDA
LIBERTY
MATAGORDA
GALVESTON
HARRIS
BRAZORIA
LIBERTY
HARRIS
JACKSON
JEFFERSON
JEFFERSON
JEFFERSON
Lati
tude
(deg.)
29
292929 30 28 29 29 29 30
28 2929 30 30
29 29 30 28 29 28 29 29 29 30 29 28 29 29 29
.49
.76
.58
.30
.09
.93
.64
.51
.72
.34
.99
.29
.26
.33
.97
.95
.87
.61
.72
.89
.92
.58
.96
.16
.11
.99
.81
.68
.67
.63
Longi
tude
(deg.)
95.74
94.25
95.48
95.91
96.45
95.36
94.92
94.53
94.10
96.37
95.55
95.72
95.31
94.84
95.94
94.92
94.25
96.15
95.87
94.58
95.65
94.38
95.83
95.21
94.62
95.23
96.53
93.99
93.88
93.99
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
11 11 11 118
10
0-- 166
11 118 9 3 7
113
10
7
11 11 10 11 11 10 -- -- -- --
70
360 65
300 -3
5 3 3
250 15 50 20 60
290 35
3230 3
35 10
3170 365 60 253 0 3
Depth
to
salt
(feet)
635
1300
230
975
1136
1100
10231 --
8173
2400
1380
529
4948
1200
3167
6170
2080
3757
1100
7582
450
1228
1010
1100
595
1214 -- -- -- --
Depth
tc cap
Dla- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
450
200
143
383
680
700
10226 --
1.8
1.0
2.6
1.5
1.3
1.3
11.3
1.0
1.5
__ _.
AMI--H
AMI--H
AMI--H
AMI--H
A-I--H
AMI--H
-M -H
-MI
0.40 AM H
1800
530 0--
800
2780 --
741
3500
825
7535 95
150 76
574
260
700 -- -- -- __
2.2
1.9
2.5
4.3
1.9
1.5
5.5
--
0.80
1.0
0.80
0.75
0.70
0.90
1.3
4.4
2.1
3.0
5.9
0.50
0.80
2.6
3.0
9.8
_- _- _- __
AMI--H
AMI--H
AMI--H
AMI--H
AMI--H
A H
AMI--H
AMI--H
AM H
AMI--H
AMI--H
AMI--H
AMI--H
AMI--H
AMI--H
AMI--H
AMI--H
--I
-M
-MI
-MI --
Tab
le 2
.--M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of
data
--C
ontin
ued
to
Area of
salt
dome
Map
Dome
oecur-
code
name
rence
Jff4 Jefferson 4
Kltt Klttrell
LPol Long Point
LLak Lost Lake
Manv Manvel
Mark Markham
Mill Mllllcan
MBlu Moss Bluff
Myka Mykawa
Nash Nash
NDay North Dayton
Oran Orange
Orch Orchard
PJun Pierce Junction
PNec Pott Neches
RBen Racoon Bend
RFRe Red Fish Reef
SFel San Fellpe
Sara Saratoga
SoLa Sour Lake
SHou South Houston
SLlb South Liberty
STop Spindle Top
SRld Stratton Ridge
Suga SugarLand
Thor
n Thompson
TuBa Turtle Bay
Webs Webster
WCol West Columbia
A121 Brazos South Block A121
GCGC
GCGC
GC
GCGCGC
GCGC
GC
GCGC
GCGC
GCGC
GC
GC
GC
GCGC
GC
GCGC
GC
GCGCGC
OT
County
or
Parish
JEFFERSON
HOUSTON
FORT BEND
CHAMBERS
BRAZORIA
MATAGORDA
BRAZOS
CHAMBERS
HARRI S
FORT BEND
LIBERTY
ORANGE
FORT BEND
HARRI S
ORANGE
WALLER
CHAMBERS
AUSTIN
HARD IN
HARD IN
HARRIS
LIBERTY
JEFFERSON
BRAZORIA
FORT BEND
FORT BEND
CHAMBERS
HARRIS
BRAZORIA --
Lati
tude
(deg.)
29.52
31.03
29.39
29.84
29.49
29.00
30.49
29.90
29.61
29.32
30.09
30.06
29.58
29.64
30.04
29.79
29.52
29.99
30.30
30.16
29.67
30.00
30.03
29.05
29.54
29.45
30.22
29.57
29.17
27.86
Longi
tude
(deg.)
94.21
95.47
95.71
94.75
95.31
96.13
96.21
94.67
95.29
95.63
94.98
93.84
95.95
95.39
93.93
96.00
94.87
96.07
94.50
94.40
95.23
94.82
94.07
95.33
95.56
95.57
94.17
95.16
95.64
95.41
Land-
surface
or sea-
Dome
floor
top
altitude
layer
(feet)
311
9 0
10
311
710 10 16 11 10 16
3 015
9
10
8
11 11 108 0
--
010 --
-10
210 60 10 35 40
220 30 35 40 603
100 40
3
130 3
160 65 35 30 20 15
360 40 25 30 30
-340
Depth
to
salt
(feet) ..
3855
868
5430
11274
1417
5170
1077
7100
950
800
7120
369
860
6948
11004
15228
4755
1900
719
4386
480
1200
1250
4280
9320 --
10430
768 --
Depth
to cap
Dla- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
_
2988
550
3275 --
1380
4890
591 --
620
580 --
285
680 --
..
3218
1500
660 __
275
700
850
3500 -- -- --
650 --
..2
1.0
2 1--
1 0
110 2 1 2 1 1 0
__
5
1.5
2 1 11.3
5
1.0
1
1.5
9 1 0-_ --
0__
.0 .8 .5 - .9 .60
.2 .50
.0 .7 .0 .2 .3 .90
. - .2 .1 .8 .0 .4 .8 .6 .9 .40
- - .80
-
-MI
AM H---
AMI--H
AMI--H
AMI--U
AMI--H
AM H
AMI--H
AM H
AMI--H
AMI--H
AMI--H
AM H---
AMI--H
AMI--H
AMI--H
-MI--H
AM H
AMI--H
AMI--H
AMI--H
AMI--H
AMI--H
A-I--H
AMI--H
AM H
H
AMI--H
AMI--H
-M
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of
salt
dom
es,
and
sour
ces
of
data
--C
ontin
ued
OJ
Area of
salt
dome
Map
Dome
occur-
code
name
rence
A56
Brazos South Block A56
A83
Brazos South Block A83
144
Galveston Block 144
400
Galveston Block 400
403
Galveston Block 403
475
Galveston Block 475
487
GaLveston Block 487
489
Galveston Block 489
A115 Galveston S. Block A115
A125 Galveston S. Blcck A125
A140 Galveston S.
Block A140
A152 Galveston S.
Block A152
A156 Galveston S.
Block A156
A166 Galveston S. Block A166
A213 Galveston S.
Block A213
A37
High Island Block A37
A60
High Island Block A60
A232 High Island E. Block A232
A262 High Island E.
Block A262
A279 High Island E.
SE .
Block A279
A303 High Island E. SE.
Block A303
A324 High Island E. SE
. Block A324
A326 High Island E. SE.
Block A326
A329 High Island E. SE.
Block A329
A360 High Island E.
SE .
Block A360
A368 High Island E. SE
. Block A368
A369 High Island E. SE.
Block A369
A388 High Island E. SE
. Block A388
A393 High Island E. SE.
Block A393
A399 High Island E. SE.
Block A399
OT
OTOTOT
OT
OT
OT
OTOTOT
OTOT
OTOT
OT
OT
OTOT
OT
OT
OT
OT
OT
OT
OT OT
OTOTOTOT
County
Lati-
or
tude
Parish
(deg.)
28.06
28.00
29.29
28.51
28.51
28.40
28.37
28.34
28.28
28.28
28.24
28.20
28.17
28.14
27.98
28.96
28.88
28.65
28.50
28.43
28.31
28.22
28.22
28.16
28.01,
28.02
28.03
27.93
27.85
27.87
Land-
surface
or sea-
Depth
Longi-
Dome
floor
to
tude
top
altitude
salt
(deg.)
layer
(feet)
(feet)
95.38
95.56
94.53
10
95.28
95.13
94.83
95.15
95.03
95.25
94.73
95.15
94.88
94.67
94.93
94.83
94.27
94.37
93.64
93.65
93.73
93.88
93.70
93.60
93.50
93.89
93.56
93.50
93.60
93.44
93.82
-180
-190
-20
1741
-85
-100
-120
-100
-110
-100
-140
-110
-150
-180
-170
-330
-70
-75
-120
-140
-160
-170
-210
-210
-230
-260
-300
-320
-390
-520
-520
Depth
to cap
Dia- Volume
rock
meter (cubic
Data
(feet) (miles) miles)
sources
_M
_M -------
1620
--
--
-MI h--
_M1
-MI -----
-MI ----- -
-MI ------
-MI ------
-MI -----
_M ------
-MI -----
-MI ------
-Ml ------
-MI ------
-M-- --
--I
--I
V
» .
vffw . «. «. «. «. M.
«...
v -
. _ ..
*.MW
....V
......
_ u
^
PIW vv «.
_M-
-M
.
V «.
«. V
*.£{.. «. » V «.«.«.
-MI-H
-M ------
-MI -
-Ml L-
-MI--
-M -
-Ml
Tab
le 2
. M
ap c
ode,
sal
t-do
me
nam
e, l
ocat
ion,
dep
th t
o sa
lt an
d ca
proc
k, d
iam
eter
and
vol
ume
of s
alt
dom
es,
and
sour
ces
of d
ata-
-Con
tinue
d
Map
code
A403
A440
A447
A463
A513
A530
A548
A555
A559
A590
MBea
A44
SLPa
SBea
DRan
Palf
Moca
Pala
Pesc
PPln
Dome
name
High Island E.
High Island S.
High Island S.
High Island S.
High Island S.
High Island S.
High Island S.
High Island S.
High Island S.
High Island S.
McFaddln Beach
Area of
salt
dome
County
occur-
or
renoe
Parish
SE.
Block A403
Block
Block
Block
Block
Block
Block
Block
Block
Block
A440
A447
A463
A513
A530
A548
A555
A559
A590
Mustang Is.
East Block A44
San Luls Pass
Stewart Beach
Dllworth Ranch
Falfurlas(6yp
Moca
Palangana
Pescadlto
Pledras Plntas
Hill)
OT
OT
OT
OTOT
OTOTOTOT
OT
OTOTOTOT ST
MC MULLEN
ST
BROOKS
ST
WEBB
ST
DUVAL
ST
WEBB
ST
DUVAL
Lati
tude
(deg.)
27.83
28.41
28.33
28.30
28.17
28.13
28.01
28.05
28.05
27.87
29.58
27.77
29.04
29.32
28.47
27.17
27 .86
27.70
27 .59
27 .60
Longi
tude
(deg.)
93 94 94 94 94 94 94 94 94 94 94 95 95 94 98 98 98 98 99 98
.67
.04
.13
.20
.28
.37
.00
.33
.53
.23
.20
.60
.05
.71
.64
.12
.83
.41
.30
.39
Dome
top
layer
__ -- -- -- -- -- -- -- -- 10 -- 11 100 11 3 9 0 9
Land-
surface
or sea-
floor
altitude
(feet)
-580
-160
-170
-160
-190
-200
-250
-260
-260
-440 -3
-550
-20
-15
290
110
450
440
600
390
Depth
to
salt
(feet) __ -- -- -- -- -- -- -- -- --
2605 --
358
2640
7645
1140
6366
500
14400
1205
Depth
to cap
Dla- Volume
rock
meter (oublo
Data
(feet) (miles) miles)
sources
..
-MI
_M
--I
__I
-MI
-MI -
_M
-MI
-MI
-MI
1355
--
2.4
-MI--H
-MI
149
--
--
-MI h--
1531
--
--
_M h--
0.40 A -H---
0 0.75
2.3
AM---H
1.2
AM---H
389
2.0
3.6
AM H
AM H
556
1.3
2.6
AM H
Caprock offset from top of salt.