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UNITED STflTES DEPflRTMENT OF THE INTERIOR
GEOLOGICflL SURVEY
SCHLUMBERGER SOUNDING RESULTS IN THE HUECO BOLSON, NEW MEXICO
By
Robert J. Bisdorf
Open File Report 85-607
1985
This report is preliminary and has not been reviewed for conformity
with U.S. Geological Survey editorial standards. Rny use of trade
names is for descriptive purposes only and does not constitute
endorsment by the USGS.
Schlumberger sounding results in
the Hueco Bolson, New Mexico.
by
Robert J. Bisdorf
INTRODUCTION
In 1983 the U.S. Geological Surrey made 54 Schlumberger soundings
in part of the Hueco Bolson in southern New Mexico <fig. 1>. The
soundings were made as part of a study to determine the potable ground
water potential of the area.
Sediments of the Hueco Bolson are composed chiefly of
discontinuous layers of clay, sand, and gravel of Tertiary age
(Knowles and Kennedy, 1958). Because of the nature of the source rocks
in the Franklin and Organ mountains, sand and gravel are more abundant
on the west side of the bolson.
The purpose of this report is to present the Schlumberger
sounding data and interpretation. In addition 2 geoelectric cross
sections and a depth to saltwater map are presented and discussed.
SCHLUMBERGER SOUNDINGS
Figure lisa map showing the location and identifying number of the
54 Schlumberger soundings, fill the soundings were made along existing
roads or trails. The soundings were automatically processed and
interpreted as shown in the graphs in the flppendix (Zohdy, 1973;
45
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Figure
1.
Schlumberger sounding location
map
1975>. The data were interpreted on a Hewlett Packard (HP> 9845B desk
top computer using a computer program of Zohdy (1973> modified to use
a digital filter developed by O'Nei11 (1975) in place of the Ghosh
(1971> filter. It was necessary to correct soundings 16, 17, 19, and
48 for the effects of road curvature. This was done in a manner
similar to that described by Zohdy and Bisdorf (1982>. Corrected
soundings have a "-C" appended to their titles. Since the majority of
the soundings were made on the Fort Bliss military reservation the
soundings in the appendix are labeled from Fort Bliss 1 thru Fort
Bliss 54. For each sounding the data in the flppendix include:
1> fl log-log plot of the field data points in which the "0"'s represent
the individual data points. Each set of data points measured with the
same potential electrode spacing are connected with a solid line. The
current electrode half spacings (fiB/2>, originally measured in feet,
have been converted to meters.
2> fl tabulation of the flB/2 spacings in meters and their corresponding
apparent resistivities in ohm-m.
3> fl log-log plot of the output of the automatic inversion program in
whi ch:
a> The continuous curve represents the shifted-digitized field curve
(Bisdorf and Zohdy, 1979)
b> The step-function curve represents the distribution of interpreted
resistivity with depth (interpreted model).
c> The plus <+> symbols represent points on a theoretical curve
calculated from the interpreted model to show how well the model
represents the shifted-digitized field curve.
4) fl tabulation of the interpreted depths in meters and the interpreted
resistivities in ohm-m. The last layer depth is an arbitrarily large
number and is intended to represent an ifinite depth.
Soundings 4, 7, 8, 9, 20, 21, 22, and 30 had cusps or other
distortions that were obviously caused by lateral geologic features or
cultural influences. These cusps were manually smoothed before
interpretation so that the inversion program could better fit the
undistorted portions of the soundings. Smoothed soundings have a "-S"
appended to their titles on the sounding interpretation plots in the
appendix. Other soundings may be distorted, but it was not necessary
to smooth them to improve the inversion.
GEOELECTRIC CROSS SECTIONS
Figures 2 and 3 show geoelectric cross sections constructed from
the interpreted models of the appropriate soundings. The cross
sections were generated in a manner similar to that described by
Bisdorf <1982, pp. 5-7). The figures consist of 2 parts, a
nonvertical1y exaggerated cross section and the same cross section
vertically exaggerated four times. Because of plotter limitations, the
nonvertical1y exaggerated cross section does not have the detail of
the vertically exaggerated cross section and is only presented to show
the horizontal character of the cross sections. On the right hand side
of the figures is a scale which relates interpreted resistivities to
shades of gray. Darker shades indicate higher resistivies whereas
lighter shades indicate lower resistivities. The triangles and numbers
at the top of each cross section indicate the sounding locations and
numbers. fit the bottom of each cross section there is a wavey line
which approximately represents sounding probing depth and is related
to the length of the soundings and the geoelectrical structure.
For the purpose of a preliminary evaluation of the resistivity
data the following chart giving resistivity and probable Hthogy and
water quality correlations will be used:
VERTICAL EXAGGERATION X4
RESISTIVITY
IN OHM-METERS
ISO
200
100
NO
VE
RT
ICA
L
EX
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GE
RA
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34
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0>VERTICAL EXAGGERATION X4
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IN OHM-METERS
idN
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Fig
ure
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.
<10 ohm-m clay or saltwater-saturated sediment
10-45 ohm-m brackish-water-saturated sediment
45-100 ohm-m sand and gravel with potable ground water
>200 ohm-m dry sand and gravel or impermiable rock
Figure 2 shows an east-west cross section about 30 km in length.
This cross section was constructed from the interpretations of 15
soundings. Interpretation of this cross section using the above chart
gives a resistive (>200 ohm-m> near surface layer of dry sand and
gravel about 50 to 120 m thick which extends from sounding 48 in the
west, eastward to about sounding 20. This layer is underlain by a
layer of (potentially) potable water-saturated sand and gravel ranging
in thickness from less than 50 to about 300 m. The thickest portion of
this layer, the most favorable zone for potable ground water, extends
from about sounding 15 to about sounding 12. This layer is underlain
by a layer of brackish water saturated sediments (10 to 45 ohm-m>
ranging in thickness from less than 100 to about 450 m. fllthough this
layer most likely contains brackish water and clay, it could still
contain potable water. From sounding 17 on the west to the easternmost
extent of the cross section a layer of saltwater-saturated sediment or
clay is present. This layer is about 100 m to greater than 600 m thick
and ranges in depth from about 250 to 600 m. In places this layer has
resistivities of less than 1 ohm-m indicating the presence of a brine.
Figure 3 shows another east-west cross section about 32 km in
length constructed from 14 sounding interpretations. Interpretation of
this cross section shows a dry sand and gravel layer in the upper 20
m. This layer is thicker in the area from sounding 29 to sounding 46
attaining a maximum thickness of about 110 m under sounding 30. The
(potentially) potable ground water saturated layer is present from
sounding 48 to 25 and under soundings 44 and 41. This layer varies in
thickness from about 180 to about 300 m. The most promising areas for
potable groundwater are between soundings 28 and 25 and beneath
soundings 48 and 47. The area under sounding 28 appears to have the
greatest thickness of this layer. The brackish water saturated layer
is more prevalent on this cross section than the last. This is due to
a decrease in either grain size or water quality. This layer typically
underlies the potable ground water layer and can be as thick as 400 m.
ft layer of saltwater-saturated sediment or clay underlies the area
from about sounding 46 on the west to the easternmost extent of the
cross section. This layer ranges in thickness from about 400 to
greater than 800 m. The depth to the top of this layer ranges from
about 320 to 600 m. Under soundings 29, 42, and 43 it appears that the
soundings are "seeing" a resistive basement at a depth of about 1 km
through the saltwater-saturated layer. This conclusion is based on one
point on those soundings and care should be taken not to put too much
emphasis on its interpreted depth.
DEPTH TO THE SflLTURTER SRTURRTED LflYER
Figure 4 is a map of the depth to the top of the low resisitivity
«10 ohm-m) saltwater-saturated layer. This map was constructed by
visually determining the depth to 10 ohm-m's on the individual
sounding interpretations. These data were combined with the
coordinates of the soundings and gridded using a minimum curvature
Algorithm (Uebring, 1981). The grid values were contoured as shown in
figure 4.
The most interesting feature of this map is the more or less
linear depression in the top of the 10 ohm-m material. This depression
trends southeast-northwest and points toward a topographic low between
8
2 4 J____I
10 J KM
Figure 4. Depth to low resistivity «18 ohm-m) saltwater-saturated sediment
Contours represent depth in meters.
9
the Franklin Mountains and the Organ Mountains. This depression may be
an indication of an ancient stream channel. This trend has the
greatest potential for thick sequences of sand and gravel and hence
potable ground water.
SUMMRRY
The resistivity data and geoelectric cross sections indicate
probable areas of potable ground water. These areas are relatively
large and if they contain potable water they represent a significant
resource. The presence of a depression in the depth to the saltwater-
saturated layer makes that area a good target for ground water
exploration. If the materials above the depression are appropriate for
an aquifer then the greatest thickness of ground water will most
likely be found here.
REFERENCES
Bisdorf, R. J., 1982, Schlumberger sounding investigations in the Date Creek
Basin, flrizona: U.S. Geological Survey Open-File Report 82-953, 54 p.
Bisdorf, R. J., and Zohdy, fl. fl. R., 1979, Geoelectrical invesigations with
Schlumberger soundings near Brunswick, Georgia: U.S. Geological Survey
Open-File Report 79-1551, 125 p.
Ghosh, D. P., 1971, Inverse filter coefficients for the computation of
apparent resistivity standard curves over horizontally stratified earth:
Geophysical Prospecting [Netherlands], v. 19, no. 4, pp. 769-775.
Knowles, D. B., and Kennedy, R. fl., 1958, Ground-water resources of the Hueco
Bolson northeast of El Paso, Texas: U.S. Geological Survey Water-Supply
Paper 1426, 186 p., 11 pi .
O'Neill, D. J. f 1975, Improved linear filter coefficients for application
10
in apparent resistivity computations: Bulletin flustralian Society
Exploration Geophysics, v. 6, no. 4, pp. 104-109.
Hebring, Michael, 1981, MINC: fl gridding program based on minimum curvature:
U.S. Geological Survey Open-File Report 81-1224, 12 p.
Zohdy, fl. fl. R., 1973, fl computer program for the automatic interpretation of
Schlumberger sounding curves over horizontally stratified media:
available only from U.S. Dept. of Commerce, Nat ' 1. Tech. Inf. Service,
Springfield, Va. 22161, as U.S. Geological Survey Report USGS-GD-74-017,
PB232 703, 25 p.
_____, 1975, flutomatic interpretation of Schlumberger sounding curves using
modified Bar Zarrouk functions: U.S. Geological Survey Bull. 1313-E, 39 p,
Zohdy, fl. fl. R., and Bisdorf, R. J., 1982, Schlumberger soundings in the
Medicine Lake flrea, California: U. S. Geological Survey Open-File Report
82-887, 162 p.
11
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3.054.276. 109. 149.14
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24.0032.3046.7070.0068.0068.00121.00146.00163.00162.00187.00227.00
91.4491.44121.92182.88243.84304.80304.80426.72609.60914.401219.20914.401219.20
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3.054.276. 109. 14
12. 199.14
12.1918.2924.3830.4842.6730.4842.6760.96
31.0020.0017.0022.5027.5024.0030.4046.0060.0070.0080.0076.0085.00
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91.4491.44
121.92182.88243.84304.80304.80426.72609.60914.40
1219.20914.40
1219.201828.802438.40
118.00117.00110.00125.0080.0057.0057.0049.0043.0044.0027.6034.0015.5011.003.23
27
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. 16
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35.5741.5029. 1526.6343.9649.4610.612.256.45
26.6049.4969.44
14.8719.7429.3145. 1068.32
100.27145.54214.24321.01457.78690.48
1000689.48
69.28167.70133.57105.0264.5532.7619. 1114.9016.4444.2332.24
1.00
28
000 OBSERVED FORT BLISS 9
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
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RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109. 149. 14
12. 1918.2924.3630.4842.6730.4642.6760.9691.44
56.0070.0096.00129.00130.00165.00216.00253.00265.00302.00293.00323.00260.00230.00
121.9291.44121.92162.86243.84304.80304.80426.72609.60914.401219.20914.401219.201826.80
188.00275.00230.00120.00115.00102.00107.0090.0047.0028.0019.6017.0010.501.03
29
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.23
.33
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33.4535.1134.7931.6428.4631.6752. 16166.62196.33265.66391.64
16.6616.2226.7642.1763.6195.69142.64211.67367.65457.87676.65
1666677.65
467.97339.75247.17154.6596.1666.6756.2941.1222.4522.7518.27
.95
30
000 OBSERVED FORT BLISS 10
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 16
1412. 1918.2924.3638.4838.4842.6760.96
27.8827.4035.8055.4076.80
130.00136.00160.00164.00195.00206.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201828.80
223.00194.00137.00122.0093.0096.0069.0053.0027.0031.0014.003.75
31
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 10
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
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. 17
.26
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15.8814.4023.0924.9311.428.26
31.7872.26140.58213.38281. 16
11.2514.5821.1132.8950.2373.98107.69162.48237.06355.93492. 15
1000491.15
331.23771.21668.28469.07243.37104.9352.5869.51161.9576.3812.461.48
32
000 OBSERVED FORT BLISS 11
10 100 1000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN
10000METERS
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3.054.276. 10
1412. 1918.2924.3836.4842.6730.4842.6760.96
42.0032.0037.4054.0067.0094.00
114.00142.00140.00125.00135.00160.00
91.44121.92182.88243.84304.80426.72304.80426.72609.60914.40914.40
1219.201828.80
134.00127.00105.0090.0068.0062.00
103.0677.3048.0019.5021.209.903.60
33
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1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (FIB/2), OR DEPTH IN METERS
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.36
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40.9441.3841.5140.3235.8029.5930.7458.05169.66355.19364.83
12.6620.3033.4253.7082.49123.44185.55279.06406.06531.32675.35
1000674.35
351.23328.83275.36196.36125.4586.3383.4491.1847.9811.242.591.94
34
000 OBSERVED FORT BLISS 12
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3.054.276. 189.14
12. 1918.2924.3830.4830.4842.6760.96
32.0025.0023.5028.5036.8957.5867.ee79.0084.00100.00116.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.401219.201828.80
96.00100.0087.0075.0068.0075.0064.0036.0016.8017.806.002.75
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flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4830.4842.6760.9691.44
19.0015.8016.7021.3028.0043.0058.0072.0070.0095.00
144.00194.00
121.92182.88243.84304.80426.72304.80426.72609.60914.40914.40
1219.201828.802438.40
215.00204.00200.00160.00100.00123.0083.0050.0022.0024.8012.003.10
.64
37
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. 16
.23
.34
.50
.731.051.562.273.364.866.969.89
16.0521.4516.7712.7616.8325.6311.685.58
10.6229.3960. 17
117.58
14.2020.5831.2742.7165.3799.70
148.46216.82316.45472.33695.85
1000694.85
213.74349.01423.31662.69436.33246.50113.2244.7220.7421.9610.64
.68
38
000 OBSERVED FORT BLISS 14
10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN
10000METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 16
1412. 1918.2924.3830.4830.4842.6760.96
64.0062.0058.0051.5047.0050.0055.0063.0061.0073.0091.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201828.80
107.00120.00120.00160.0083.0086.0060.0037.0017.5017.206.801.42
39
FORT BLISS 14
1 10 100 SCHLUMBERGER ELECTRODE SPRCING (RB/2),
1000 1000 OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITYIN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
1
172637558119
1.732.583.705.437.96
58.7762.5374.2172.4256.3053.5877.9897.5665.5238.6230.23
11.7417.0922.5634.9242.1765.54103.26156.38234.39353.85519.40
1000518.40
34.7257.94139.41146.95505.28220.13106.5451.8436. 1046.6719.24
.39
40
000 OBSERVED FORT BLISS 15
10SCHLUMBERGER ELECTRODE
100 SPflCING
1000 (RB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
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flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109. 14
12. 1918.2924.3830.4830.4842.6760.9691.44121.92
46.3050.0061.0083.50108.00151.00190.00230.00237.00290.00365.00372.00302.00
182.88243.84304.80304.80426.72609.60914.401219.201828.802438.401828.802438.403048.00
222.00156.00125.00137.0081.0031.8012.505.805.808.007.406.007.00
41
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INTERPRETEDDEPTH
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INTERPRETEDRESISTIVITY
IN OHM-METERS
. 14
.20
.29
.43
.62
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811386
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42.0141.5132.5733.3150.7952.5525.0618.9745. 1389.29183.78334.18
12.3818.2024.9238.5557.7183.75122.16184.43276.08381.55461.98738.99
1000737.99
555.96797.691120.75557.94244.21100.4257.4076.4366.8611.36
.551.54
19.00
42
000 OBSERVED FORT BLISS 16-C
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
ftB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4830.4842.6760.9691.44
57.0069.0095.00143.00182.00243.00290.00320.00320.00350.00375.00345.00
121.92182.88243.84304.80304.80426.72596.80671.12871. 121155.191705.362242.72
285.00215.00185.00160.00157.00102.0046.9012.7014.205.584.808.39
43
Q IS Q
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 16 "C
1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
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INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.15
.21
.31
.46
.67
.971.461.992.634.116.149.31
28.8139.2134.9121.6216.3334.2876.59152.96269.26442.15646.12652.54
12.5819.3629.1943.1563.8595.57138.34265.64284.84353.12561.51
1888568.51
1484.78626.68484.35192.46135.91248.43483.28168.2319.67
.621.65
19.44
44
000 OBSERVED FORT BLISS 17-C
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.05 4.2? 6. 16
1412. 1918.2924.3839.4839.4842.6769.9691.44
68.9692.90
127.00190.00240.00307.00335.00345.00338.00338.00360.00340.00
121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201741.932252.47
340.00235.00167.00115.00120.0080.0042.0019.0022.009.004.416.74
45
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INTERPRETEDRESISTIVITY
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.11
.16
.24
.35
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.761.131.562.223. 184.756.91
27.9444.3976.8663.6921.7523.1573.24
211.79442.19750.78941.10923.20
10.4915.6623.4130.9345.1068.4798.87
149.98203.26300.18361.76
1000360.76
433.37281.32386.36
1266.821098.89239.1759.2671.04
344.1722.25
.2711.16
46
000 OBSERVED FORT BLISS 18
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING CRB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4830.4842.6760.96
77.5062.0058.0057.0058.5066.0072.0076.0081.0093.00
120.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201828.80
137.00140.00145.00144.00140.00153.00125.0080.0040.0041.0021.2016.80
47
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 18
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.30
.43
.64
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98.4998.0598.66100.30
97.8580.4758.3152.9166.8174.8269.02
19.8426.6937.9957.8287. 13127.44189.85279.71379.49486.50721.68
1000720.68
96. 11207. 13218.84162.45169.31237.85225.31103.4330.756.499.3218.22
48
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000 OBSERVED FORT BLISS 19-C
1 10 100 1000 10003 SCHLUMBERGER ELECTRODE SPRCING CRB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.654.276.169. 14
12. 1918.2924.3836.4836.4842.6766.96
146.66135.66125.66123.66123.66117.66116.66166.66169.6689.66165.66
91.44121.92182.88243.84364.86364.86426.72669.66914.46914.461697.281667.82
136.66142.66165.66161.66156.66167.6696.6667.5642.6646.6637.7643.56
49
DIGITIZED CRLCULRTED LRYERING FORT BLISS 19 "ca p^r..^.....!^^.
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
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INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITYIN OHM-METERS
.26
.29
.43
.63
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2506
4,68.99
176.77174.07176.95186.18189.87158.85111.42101.07160.25244.68191.20
13.0918.4527.5138.7448.5268.47109.83171.89246.54331.01506.66
1000505.66
90.5443.9956.16166.58444.44403.46259.30129.7546.5014.8418.4775.60
50
000 OBSERVED FORT BLISS 20
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109.14
12.1918.2924.3838.4842.6738.4842.6760.96
55.0026.0014.2015.5019.1028.8038.6046.0065.0050.0066.5090.00
91.44121.92182.88243.84304.80426.72304.80426.72609.60914.40914.40
1219.201828.80
121.00150.06170.06150.00115.0037.50
137.0043.0036.1014.5015.005.401.07
51
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INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
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. 13
.20
.29
.42
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1120.56597.59360.15792.34
3508.00263.78
12.341.61
10. 1330. 1155.80
7.6011. 1316.7525.6733.0451.7880.88
122.82182.70263.53340.16
1000339.16
110.26203.97322.69446.67965.26503.79292.60163.6681.6722.44
.72
.83
52
FORT BLISS 21
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276.10
1412. 19 18.29 24.36 30.48 30.48 42.6? 60.96
54.0038.0029.0025.0025.5031.6037.0038.0041.0041.0042.00
91.44121.92182.68243.64304.80304.60426.72609.60914.40914.401219.201628.60
55.0052.0064.0047.5038.0042.0031.7015.006.507.503.703.50
53
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 21 ~ s
1 10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.30
.43
.64
.931.371.972.673.665.687.32
11.51
126.94126.16128.86132.46115.7563.8421.4910.9732.26
123.7060.43
17.8427.1739.3350.5376.94
120.64182.82265.29351.67425.60649.78
1000648.78
34.6133.0172.73
186.58117.9473.7347.4323.876.511.161.744.49
54
000 g OBSERVED FORT BLISS 22
en a:
LJz:
iz
5
>-K»-H
> -H
CO
CO LJ
K
LJ
CC CL CL CC
1 10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4830.4842.6760.9691.44
121.92
27.0030.00
38.0052.0061.0074.0081.0083.0082.0072.8060.00
47.8042.80
182.88243.84304.80304.80426.72609.60914.40
1219.20914.40
1219.201828.602438.403048.60
46.0052.0052.0052.0044.0030.0011.602.00
14.507.566.666.70
16.30
55
+ + + DIGITIZED CflLCULflTED LflYERING BLISS 22-S
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
. 16
.26
.38
.56
.611. 191.752.483.243.994.847.15
25.6326.3628.8528.5223.4117.6928.3348.8786. 15192.58363.25251.87
12.2726.4238.9945.9771.9687.52132.82214.18317.85485.59489.33865.69
1800864.69
163.9985.9134.6619.8346.72
248.03143.0669.6123.363.42.53
5.2722.87
56
000 OBSERVED FORT BLISS 23
_j
10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN
10000METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276.10
1412. 1916.2924.3830.4830.4842.6760.96
42.0036.0025.5015.008.808.008.209.509.5010.7016.80
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.401219.201628.80
18.5025.0031.8034.0033.0035.5032.0023.5012.6014.907.202.64
57
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 23
J 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.30
.43
.64
.931.351.692.634.005.277.63
11.96
35.5035. 1633.9736.5554.3362.9351.5016.444.864.297.65
16.3626.7936. 1649.5960.6669.41147.31241.25361.75474.07577.26
1000576.26
9.3616.4023.4952.51
115.5384.2062.0037.4914.703.14
.612.06
58
OBSERVED FORT BLISS 24
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412.1916.2924.3830.4842.6730.4842.6760.9691.44
131.00146.00185.00275.00275.00293.00280.00235.00130.00264.00148.0078.0060.80
121.92182.88243.84304.80426.72304.80426.72609.60914.40
1219.20914.40
1219.201828.80
64.0065.0068.4061.2055.0090.0065.0036.3015.206.75
12.085.10
.60
59
+ + +
DIGITIZED CRLCULRTED LRYERING FORT BLISS 24
::;
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.23
.33
.49
.721.051.552.212.963.895.488.22
94.2493.6498.2797.9986.5989.49
154.34341.83472.38561.11560.71
13.1519.9028.1741.0163.8293.02
139.01211.30310.98443.53623.30
1000622.30
342.84126.7835.5119.8856. 1299.2499. 1862.7027.6711.684.24
.27
60
FORT BLISS 25
10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4836.4842.6760.9691.44
44.0036.0030.0028.6034.0044.2049.0054.0052.0054.0066.0061.00
121.92182.88243.84304.80426.72304.80426.72609.60914.40914.401219.201828.80
90.0081.0072.0059.0040.0069.0047.0026.0010.009.603.70.66
61
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 25
1 10 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.23
.33
.49
.721.051.552.263.224.746. 138.25
60.7460.7358.5556.8366. 1765.9535.3514.4615.8782.49
106.56
13.8720.3129.8938. 1554.3667.36
136.09204.84303.68449.29638.72
1000637.72
56.3148.4282.95
234.38217.82128.8070.4838. 1522.9715.034.66
.21
62
is osr
000OBSERVED FORT BLISS 26
tflct:LJI-LJ
Q
H- tflHHCO LJ
Uct: en CL CL cc
10 100 1000 10000
SCHLUMBERGER ELECTRODE SPflCING (RB/2), IN METERS
fiB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
fiB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109. 14
12. 1918.2924.3830.4830.4842.6760.96
130.00110.0067.0043.0042.0049.0052.0058.0062.0054.0043.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201828.80
36.0033.0032.0025.6027.0026.0021.6013.006.50
1080
1.70
63
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 26
1 10 SCHLUMBERGER ELECTRODE
100 SPRCING (RB/2),
1000 10000 OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.23
.33
.49
.721.851.552.253.023.866.078.36
203.28202.06196.86198.22215.23214.02128.6336.2310.2625.74
105.50
12.4819.7229.8244.4467.11
100.57149.61222.05326.01448.77560.84
1000559.84
98.7758.5831.7423.4628.0928.4126.4230.5420. 126.771.401.49
64
FORT BLISS 27
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPflCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 16
1412. 1918.2924.3830.4830.4842.6760.9691.44
33.0031.0036.0050.0063.0084.0080.0079.0082.0056.3032.0015.00
121.92182.88243.84304.80304.80426.72609.60914.40
1219.20914.40
1219.201828.80
12.8013.6014.5014.5015.7012. 1010.005.703.607.903.901.60
65
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 27
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.17
.26
.37
.54
.791.151.702.063.134.817.56
23.6723.7433. 1142.6326.3412.7215.6399.5095.74
139.22165.35
10.7616.3423.3329.6442.1167.94
104.93159.04239.79357.89496.36
1000495.36
214.66112.3337.576.764.56
14.7918.7420.7920.6212.373.561.16
66
FORT BLISS 28
._._ I ._10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (flB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412.1916.2924.3830.4830.4842.6760.9691.44
26.0027.5033.8038.0041.5047.4060.0067.0071.0085.00112.00140.00
121.92182.88243.84304.80304.80426.72609.60914.40914.401219.201828.802438.40
132.00108.08100.00
90.0088.0072.0051.0028.0027.0013.905.002.00
67
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 28
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.27
.39
.58
.851.251.812.483.555.398.0911.8116.02
19.6519.8219.7319.0219.1826.3450.3754.5334.7830.3250.57180.90
20.7125.1038.8065.75104.17159.82244.86368.79517.76692.56997.71
1000996.71
194.39453.17248.51138.3978.8868.9772.1260.8720.967.265.611.00
68
FORT BLISS 29
10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN
10000METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.654.276. 10
1412. 1918.2924.3630.4630.4842.6760.9691.44
121.92
36.0043.6051.3064.0076.00
182.00126.00146.00143.00164.00190.00160.00166.00
182.86243.84304.80426.72304.80426.72669.66914.48
1219.20914.40
1219.201626.602436.403046.00
155.00122.0096.8066.00
115.8072.8046.6024.5016.8029.80is.ee5.905.006.80
69
+ + + DIGITIZED CRLCULflTED LflYERING FORT BLISS 29
1 10 100 1000 10000 SCHLUMEERGER ELECTRODE SPflCING (RE/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.23
.34
.49
.721.061.562.283.294.656.438.68
11.77
32.0632. 1532. 1131.8331.5432.7538.4751.5273.77
113.06183.74268.41
16.8025.6140.6163.6496.99
144.92212.42308.16453.48651.00796.94975.04
1000974.04
313.60304.68254.88190.90142.45106.4869.5645.5138. 1421.132.95
.8211.20
70
000 OBSERVED FORT BLISS 30
.__ I _._.__.10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.854.276. 169.14
12. 1916.2924.3830.4842.6730.4842.6760.9691.44
28.2026.6024.0025.2031.0046.4060.0069.0095.0078.00102.00137.00163.00
121.92182.88243.84304.80426.72304.80426.72609.60914.40914.401219.201828.802438.40
187.00210.00182.00161.00140.00191.00144.0046.0028.0830.0013.503.601.58
71
CD CD
+ + +
DIGITIZED CRLCULRTED LRYERING FORT BLISS 3Q~S
1 10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.21
.30
.44
.65
.961.412.842.924.316.087.92
10.44
55.6454.5753.2454.8060.2655. 1730.5814.7616.4946.69
101.71151.02
13.8518.3024. 1135.0859. 16
103.18167.82255.13374.38560.04804.50
1000803.50
229.55368.57592.95624.28481.38329.48175.0675.3432.7523.118.421.64
72
FORT BLISS 31
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4830.4842.6760.9691.44
48.0051.0053.0061.0070.0096.00124.00150.00135.00165.00204.00205.00
121.92182.88243.84304.80304.80426.72609.60914.401219.20914.401219.201828.80
140.0062.0042.0040.0042.5040.0036.0020.3012.8024.9013.307.60
73
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 31
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.36
.43
.64
.931.372.012.954.336.288.60
11.60
53.4753.4353.4753.5653.5353.2154.0660.0878.59
125.93245.81
15.0021. 1132.8753.1081.00
113.38156.27246.84384.67551.96748.11
1000747.11
426.80451.19380.27255.40119.5440.7517.8632.0449.7513.924.864.21
74
FORT BLISS 32
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1916.2924.3630.4842.6730.4842.6760.96
31.2029.0034.5050.5065.0095.00110.00132.00176.00170.00205.00190.00
91.44121.92182.86243.64304.80304.60426.72609.60914.40914.401219.201828.60
167.00125.00101.0090.0078.0095.0076.0053.0025.8027.6014.605.40
75
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10
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000 OBSERVED FORT BLISS 33
10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN
10000METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3630.4630.4842.6760.9691.44
24.0021.5027.0038.5049.0066.0086.2097.00102.00114.00134.00150.00
121.92162.88243.84304.60426.72304.80426.72609.60914.40914.401219.201828.802438.40
150.00132.00119.0090.00
71.00100.0074.0045.0021.6025.0911.603.901.56
77
FORT BLISS 33
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RE/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.21
.30
.44
.65
.961.402.053.013.964.626.339. 19
27.4726.5227.4636. 1530.1121.6115.5323.0064.79169.03166.66166.65
13.8720.9932.6652.3782.92127.29191.31284.56416.91602.42852.04
1000651.04
216.91267.62264.93245.91166.65130.0191.6066.6040.4521.698.411.03
78
000 OBSERVED FORT BLISS 34
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
fiB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276.10
1412. 1918.2924.3830.4842.6730.4842.6760.96
52.0052.0051.5055.0059.0074.0092.80188.80135.00118.88138.00185.80
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.401219.201828.80
245.00280.00280.00250.80217.00220.00112.8050.0028.8022.009.802.65
79
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 34
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.23
.33
.49
.721.051.552.273.334.867. 1710.34
62.8462.2662.3763.7866.0566.7761.3751.8646.6154.0582.82
14.3318.9923.5028.9542.6272.03121.36188.78270.96381.75591.40
1000590.40
137.97251.34568.351000.49758.70542.80326.49141.5444.5716.6219.501.90
80
000 OBSERVED FORT BLISS 35
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.854.276. 18
1412. 1918.2924.3838.4830.4842.6760.9691.44
31.8026.0026.8036.3047.6074.8895.60116.00118.88152.80188.80246.80
121.92182.88243.84304.80304.80426.72609.60914.48914.401219.201828.802438.48
272.80280.80240.80190.80227.80158.8072.8026.8828.8818.882.96.88
81
RESISTIVITIES IN OHM-METERS
10
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10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4842.6730.4842.6760.96
34.0027.0025.0030.0036.0051.0064.0072.0090.0081.00
100.00130.00
91.44121.92182.88243.84304.80304.80426.72£09.60914.40914.40
1219.201828.802438.40
155.00174.00180.00160.00130.00142.00102.0057.0023.8028.0010.002.601.80
83
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 36
100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.21
.30
.44
.65
.961.462.622.894.315.647.83
11.63
78.9869.3167.8071.8980.2062.9328. 1615.4529.4799.13
111.70107.64
16.9522.6127.2339.2067.06
111.70174.68264.74395.05571761
3976
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145.93300.53817.04605.71372.16210.85115.1470.6044.2718.663.31
.73
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10SCHLUMBERGER
100 ELECTRODE SPRCING
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3.054.276. 169. 14
12. 1918.2924.3830.4842.6730.4842.6760.96
44.0036.5033.8046.0061.8089.96112.80132.00160.00163.00210.00240.00
91.44121.92182.88243.84304.80426.72304.80426.72609.60914.40914.401219.201828.80
242.00238.00230.00165.00152.0067.00180.00105.0047.0016.5021.907.302.40
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.17
.25
.37
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101.85145.75103.6375.26
115.38197.3253.0618.0657.34
216.63420.37
10.4913.4821.2733.2750.8976.36
114.16165.42236.58353.49501.23
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577.691151.21569.64421.27445.20539.29361.09136.1660.1774.2920.44
1.74
86
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10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
10000
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3.654.276. 16
1412. 1918.2924.3836.4836.4842.6760.96
34.0028.0027.8039.5052.0070.0086.00
102.00103.00125.00147.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201828.80
176.00195.00174.06165.00122.00144.0078.9032.0012.6013.205.701.20
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3.054.276. 10
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28.0020.0020.0027.3034.0046.8060.0068.0064.0068.0073.0065.00
121.92182.88243.84304.80426.72304.80426.72609.60914.40914.40
1219.201828.80
58.0055.0040.0029.0025.0040.0034.0021
99
00
5050
3.201.65
89
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1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
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.30
.43
.64
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27. 1127.8527. 1627.2927.4426.5924.7227.3946.96130.49169.12
14.7523.3337.8357.2266.43128.95189.73272.42389.74555.16729.85
1880728.85
159.19134.42109.1362.6163.7952.2337.4420.9212.897.502.07.93
90
000 OBSERVED FORT BLISS 40
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
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flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 16
1412. 1916.2924.3830.4630.4642.6760.96
52.0031.0029.0039.6052.0077.0098.00105.00115.00128.00124.00
91.44121.92162.68243.64304.60304.60426.72609.60914.40914.401219.201626.60
102.0060.0047.0036.4032.0033.0023.6014.807.609.604.601.13
91
9 DIGITIZED CRLCULRTED LRYERING FORT BLISS 40
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
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INTERPRETEDDEPTH
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.30
.43
.64
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11.96
50.1649.8649.8051.0352.7444.0925.7722.25
114.80182.14264.15
15.5024.3538.0956.8881.72
119.67183.64277.46382.02542.11808.55
1000807.55
520.54276.32159.1075.7932.3821.6250. 1539.567.534. 153.59
.35
92
000 g OBSERVED FORT BLISS 41
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 16
1412. 1918.2924.3830.4830.4842.6760.9691.44
10.309.50
11.2016.0020.7030.0039.0046.0041.2055.0073.0075.00
121.92182.88243.84304.80426.72304.80426.72609.60914.40914.40
1219.201828.80
75.0872.0060.0854.0041.7074.8056.0032.0012.7015.505.602.91
93
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1 10 100 1000 10000
SCHLUMEERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
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IN METERS
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INTERPRETEDRESISTIVITY
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.17
.26
.38
.54
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12.9710.5713.3120.0717.967.564.96
12.4929.2957.38
101.02
10.7016. 1921.6232.8950.4875.95
113.46169.10250.12351.53429.82
1000428.62
150.05195.66345.04230.04152.29105.7995.41
108.2663.5623.37
1.702.54
94
FORT BLISS 42
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1916.2924.3630.4830.4842.6760.9691.44
36.0037.2045.2056.0066.5082.0098.0096.00
110.0082.0066.0050.00
121.92162.66243.64304.60304.60426.72609.60914.40914.40
1219.201628.602436.403046.00
42.0032.0024.0020.5020.5018.2011.806.006.803.803.104.004.92
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. 18
.26
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42.2148.9842. 1745.6445.9735.3726.5034.4972.60
177.80373.38251.67
13.5021.6433. 1650.2174.95
108.65163.18244.62359.05461.67561.28932.59
1000931.59
158.5993.3359.9850.5537.9520.0323.8338.6017.422.68
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13.61
96
FORT BLISS 43
10 100 1000 10000 SCHLLIMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109. 14
12. 1918.2924.3630.4830.4842.6760.9691.44
31.5029.0033.ee39.604i.ee 34.ee 34.ee 3e.ee 33.ee26.3029.4029.ee
121.92182.88243.843e4.ee 3e4.ee426.72609.60914.40914.401219.201828.862438.40
27.8e28.ee 24.ee 22.se24.202e.ee i4.ee
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6.98
97
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1 10 100 ^ 1000 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
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INTERPRETEDDEPTH
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INTERPRETEDRESISTIVITY
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.27
.39
.56
.651.241.792.643.454.767.44
11.3516.91
42. 1942.9343.9241.3929.6216.6424.3788.78
103.3857.5437.0425.67
25.0637.6254.6681.71
120.33178.09263.40362.64482.95612.46995.56
1000994.56
20.7629.7849.0134.1822.2223.0629.9515.272.46
.664.61
24.76
98
000 OBSERVED FORT BLISS 44
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109. 14
12. 1918.2924.3830.4842.6730.4842.6760.9691.44
35.0043.5054.5063.0064.0055.0053.0054.0050.0063.0057.5056.0060.00
121.92182.88243.84304.80426.72304.80426.72609.60914.401219.201219.201828.802438.40
70.0078.0053.0046.0029.0059.0038.2026.0013.007.3012.002.601.50
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1 10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.21
.30
.44
.65
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13.26
69. 1671.8173.0770.2062.4066.49
110.65223.53254.39193.27140.07111.00
19.7529.2642.7754.3781.09
125.62186.98274.70410.64606.92811.85
1000810.85
86.2174.34
143.13431.47285.16136.6463.9137.2135.1823.503.73
.84
100
000 OBSERVED FORT BLISS 45
10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1916.2924.3830.4830.4842.6760.9691.44
37.5026.0024.8026.0031.0041.0040.0036.0036.0027.0026.0030.00
121.92182.88243.84304.80426.72304.80426.72609.60914.40914.40
1219.201828.80
34.2036.0030.0024.0018.5033.5024.0014.506.806.804.203.20
101
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INTERPRETEDDEPTH
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INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.36
.43
.64
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10.98
46.3946.5247.3746.2344.0330.1117.4319.1166.03
180.6476.91
17.3025.8139.1355.3875.04
118.65179.65262.19373.68521.44753.79
1000752.79
38.7820.3821.1267. 19
115.9854.2827.9915.328.023.742.522.96
102
000 OBSERVED FORT BLISS 46
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109. 14
12. 1918.2924.3830.4830.4842.6760.96
150.00150.00157.00160.00150.00130.00120.00120.00115.0098.00
100.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201828.60
100.00110.00136.00138.00130.00148.00119.0082.0042.0043.0023.9012.00
103
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_ ........ ..... -..}..-}.. .'.'t j.l........ ...;.........:.....;....}...>.. .^.1...^........ ............^.....'f...\...^. .^. *. ........ ...
1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
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INTERPRETEDRESISTIVITY
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INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
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.23
.33
.49
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10.41
152.54154.07155.65154.27147.63145.97171.48223.23221.02159.42129.29
15.3222.4932.6948.0469.3893.39
138.18210.34308.59434.82596.79
1000595.79
133.32114.3079.6579.93
159.33320.30259.76154.2379.1136.3115.626.61
104
000 OBSERVED FORT BLISS 47
10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 109.14
12.1918.2924.3830.4842.6730.4842.67
380.00430.00420.00478.00475.00320.00318.00245.00202.00296.00239.00
60.9691.44
121.92182.88243.84304.80304.80426.72609.60914.40
1219.201828.80
232.00155.00147.00120.0084.0068.0068.0052.0045.8052.0074.0092.60
105
o+ + +
DIGITIZED CRLCULRTED LRYERING FORT BLISS 47
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITYIN OHM-METERS
.30
.43
.64
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12.71
463.50462.23467.19471.78443.65384.98460.39959.63966.70416.38223.02
18.8328.1941.6660.8498.54
133.92181.87234.25359.38493.86632.81
1000631.81
223.52267.21197.54139.36185.42159.8741.6912.0820.66
107.60226.00160.79
106
000 OBSERVED FORT BLISS 48-C
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPflCING (flB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4842.6730.4842.67
36.5035.0042.0062.0064.00
124.80180.00205.80240.00169.60192.80
60.9691.44
121.92182.88243.84304.80304.80426.72609.60905.26
1193.29
231.20255.00240.00180.00140.80104.00119.0075.8064.5067.1868.50
107
+ + + DIGITIZEDCD
Q __ ___ ___0 rrrrr-rp7.irT7rr.CRLCULRTED LRYERING FORT BLISS
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.28
.42
.61
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1828
45,6.47
15.7615.6715.2914.9016.6125.1849.5793.96
156.65277.41555.80
7.7610.9519.3636.8665.28
102.37145.35215.36346.90534.76
1000533.76
1089.20917.67647.73462.83270.85115.4339.7928.1077.4696.7267.56
108
FORT BLISS 49
10 SCHLUMBERGER ELECTRODE
100SPRCING
1000 (RB/2), IN METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276.109.14
12.1916.2924.3630.4630.4642.6760.9691.44
47.5035.0031.0032.2036.0041.0046.0052.0059.0074.0096.00
120.00
121.92162.66243.64304.60304.60426.72609.60914.40914.40
1219.201626.602438.403046.00
120.00115.00102.0064.0075.0050.6027.0010.4013.006.102.602.263.06
109
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1 10 100 00 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
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INTERPRETEDRESISTIVITY
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INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
.23
.34
.49
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10.2515. 15
96.7597.7499.41
100.50
93. 1867.6336.3222. 1031.4354. 1750.2455. 19
21.2026.8536.3455.7768.98
138.10205.03291.49409.61596.42777.87992.42
1000991.42
101.52249.31290.19229.41173.68112.6561. 1428.5214.4610.352.42
.544.67
1 10
000 OBSERVED FORT BLISS 50
10 100 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN
10000METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3838.4838.4842.67
55.8855.ee49.5033.ee 25.ee23.2825.ee se.ee 34.ee43.50
60.9691.44
121.92182.88243.843e4.ee 3e4.ee426.72609.60914.40
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1 10 100 1000 1 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
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INTERPRETEDRESISTIVITY
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INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITYIN OHM-METERS
. 19
.27
.40
.59
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51.9669.4978.0151. 1739.1170.45
205.49152.6847.056.39
7.0010.0815. 1622.2833.9752. 1873.94
114.64171.32238.90
1000237.90
5. 1235.3877.20
154.17232.55305.22398.24216.20
96.4126.264.69
1 12
000 OBSERVED FORT BLISS 51
10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING CRB/2), IN METERS
flB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
RB/2 OBSERVEDIN RESISTIVITY
METERS IN OHM-METERS
3.054.276. 10
1412. 1918.2924.3830.4830.4842.6760.9691.44
77.8059.0044.0038.5037.0040.8047.0056.0050.2061.9078.9097.90
121.92182.88243.84304.80304.80426.72609.60914.40914.40
1219.201828.802438.493048.00
104.00110.00100.00
74.9073.9044.9018.904.605.402.791.741.913.80
1 13
+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 51
1 10 100 1000 10000
SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
INTERPRETEDDEPTH
IN METERS
INTERPRETEDRESISTIVITY
IN OHM-METERS
. 18
.26
.38
.56
.821.201.752.553.715.417.9011.71
116.94113.90113.85117.80122.80112.3379.9852.4440.7729.7522.4333.62
16.5422.3629.8841.2361.5598.37153.68227.45318.12424.98564.27920.09
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68.30119.02188.46245.02240.54179.0095.3837.5610.522.13.44.62
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10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN METERS
fiB/2 OBSERVEDIN RESISTIVITY
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3.854.276.109.14
12. 1918.2924.3830.4830.4842.6760.96
43.0048.0053.5060.0062.0064.0060.0060.0063.0066.0064.00
91.44121.92182.88243.84304.80304.80426.72609.60914.40914.401219.201828.80
100.00106.0096.0088.0074.0076.0056.5030.0010.0012.006.801.93
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3.054.2?6.109. 14
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60.5068.5073.0072.0070.0077.0090.00
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10 100 1000 10000 SCHLUMBERGER ELECTRODE SPflCING (RB/2), IN METERS
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3.054.276. 189.14
12. 1918.2924.3830.4830.4842.6760.96
60.0059.5057.0068.0079.50108.00136.00160.00166.00206.00300.00
91.44121.92162.88243.64304.80304.80426.72609.60914.401219.201828.80
350.00370.00280.00176.00134.00128.0097.0056.0021.5011.007.50
1 19
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11
1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS
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61.2662.0361.2159.8760.9465.3660.6644.5544.8565.38
178.21
12.5317.1822.6430.3447.8881.35
126.79180.79266.00413.09540.90
1080539.90
247.40344.21619.19904.38682.27399.17168.3061.7243.3050.968.876.75
120