UNITED STflTES DEPflRTMENT OF THE INTERIOR GEOLOGICflL ... · UNITED STflTES DEPflRTMENT OF THE...

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;

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Schlumberger sounding location

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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:

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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

flPPENDIX

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38.5033.6039.0047.8054.5051.0057.5059.5060.5063.5074.0067.0076.0097.00131.00

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JL__._10 100 1000 10000






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

108.00

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

+ -I- + DIGITIZED CRLCULRTED LflYERING FORT BLISS 8-S

1 10 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

. 16

.23

.34

.50

.731.061.491.963.044.486.479.73

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







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

en a:LJH- U

J*o

o

COu

CO i iCOu a:

+ + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 9-S

1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING CRB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.23

.33

.49

.721.651.552.212.953.625.616.78

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







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


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


. 17

.26

.37

.54

.791.161.582.263.224.747. 17

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


10 100 1000

SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN

10000METERS





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


1 10 100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (FIB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


.36

.43

.64

.931.372.062.944.205.266.358.49

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


10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING CRB/2), IN METERS





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

35

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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

(S

(S

+ + + DIGITIZED CRLCULRTED LRYERING

.....;T7". ..^.^j.jj.........:......u................LJ..............

FORT BLISS 13

4 :!.V .......

1 10 100 SCHLUMBERGER ELECTRODE SPRCING (RB/2)

1000 \f- 1 OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

. 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



10000METERS





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


INTERPRETEDDEPTH

IN METERS


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


10SCHLUMBERGER ELECTRODE

100 SPflCING

1000 (RB/2), IN 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

oO

-I- + +

DIGITIZED CRLCULRTED LRYERING FORT BLISS 15^ .........>.....j....,..;.. . .

......... .J..... j....«...v. . .


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

. 14

.20

.29

.43

.62

.911.331.95

811386

8.45

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




ftB/2 OBSERVEDIN RESISTIVITY


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


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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







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

00

tn o: u »~ u

Jo§2

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en H-»en u o:

+ + + DIGITIZED CRL5t|LRTED LRYERING FORT BLISS 17 " C

1000 10000SCHLUMBERGER ELECTRODE SPflCING (RB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.11

.16

.24

.35

.51

.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







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



INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.30

.43

.64

.931.372.012.924.286.319.2713.65

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

G Gsr


1 10 100 1000 10003 SCHLUMBERGER ELECTRODE SPRCING CRB/2), IN 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..^.....!^^.


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


.26

.29

.43

.63

.931.361.982.89

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


1 10 100 1000 10000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), IN 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

Q O O

tn CKLJHu

Jo |GDo~

COufr-lH t-i>H°in-t-»

tn u o:

f + + DIGITIZED CRLCULRTED LRYERING FORT BLISS 20~s


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

. 13

.20

.29

.42

.51

.781.961.482.363.565.28

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






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


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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






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


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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


_j


10000METERS





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


J 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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





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

+ + +


::;


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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






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


1 10 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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





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


1 10 SCHLUMBERGER ELECTRODE

100 SPRCING (RB/2),

1000 10000 OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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






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



INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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





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



INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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


10000METERS





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


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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


.__ I _._.__.10 100 1000 10000






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


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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





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



INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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






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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100

1000

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10000METERS





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


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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







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



INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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







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


10

100

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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


100 1000 10000SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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

1000760.76

145.93300.53817.04605.71372.16210.85115.1470.6044.2718.663.31

.73

84

FORT BLISS 37

10SCHLUMBERGER

100 ELECTRODE SPRCING






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

85

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in a: ui- u

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Q prrr.-........I...;...;.- .-.-+:^4 j.........,.....,...;...«.. . . j.

CRLCULRTED LRYERING FORT BLISS 3?

-L.1 10 100 1000 10000


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.17

.25

.37

.55

.801.131.662.363.534.987.06

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

1000500.23

577.691151.21569.64421.27445.20539.29361.09136.1660.1774.2920.44

1.74

86



10000





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

87

RESISTIVITIES IN

OHM-METERS

10

100

oo 00o

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3.054.276. 10

1412. 1918.2924.3830.4830.4842.6760.9691.44

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



INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.30

.43

.64

.931.372.012.954.346. 137.739.99

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







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


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.30

.43

.64

.931.372.012.924.265.467.99

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





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

+ + + DIGITIZED FORT BLISS 41

1 10 100 1000 10000

SCHLUMEERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.17

.26

.38

.54

.791.161.682.463.565.667.24

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






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

05

(3 (3

in a: u

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Q ........ ̂ .....;....',..j..iT\

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1 10 100 1000 10000


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

. 18

.26

.38

.56

.821.281.742.573.584.525.508.11

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

.461.66

13.61

96

FORT BLISS 43

10 100 1000 10000 SCHLLIMBERGER ELECTRODE SPRCING (RB/2), IN 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

40408080

6.98

97


1 10 100 ^ 1000 1000 SCHLUMBERGER ELECTRODE SPRCING (RB/2), OR DEPTH IN METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.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







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


1 10 100 1000 10000


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.21

.30

.44

.65

.961.412.012.693.775.758.81

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







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

+ + +

DIGITIZED

i i r : ,.........,..... ,...}...,.. . .........^.....j....«...v. . .

CRLCULRTED LRYERING FORT BLISS 45


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.36

.43

.64

.931.372.002.664.205.716.96

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







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

+ + +DIGITIZED CRLCULRTED LRYERING FORT BLISS 46

_ ........ ..... -..}..-}.. .'.'t j.l........ ...;.........:.....;....}...>.. .^.1...^........ ............^.....'f...\...^. .^. *. ........ ...


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.23

.33

.49

.721.651.552.273.294.827. 10

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


10 100 1000 10000






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+ + +



INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


.30

.43

.64

.931.372.012.954.085.918.80

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


10 100 1000 10000 SCHLUMBERGER ELECTRODE SPflCING (flB/2), IN 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


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.28

.42

.61

.891.311.882.533.26

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






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

IS IS

Cflo: uH U

en u

tnnen u

+ + + DIGITIZED CRLCULRTED LRYERING

......,.^.....'P ......w. .

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^.1........ ........;..{..;..,. . ;J... ......}..... ..- ..}.^.J........ ....^...^..J..J..,^.l^......... J..... ... .. .^. f ........ ....^...^--*",-J.^.J.^.............. ... .. .

FORT BLISS 49;-- - T ,-!-- - -r -


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.23

.34

.49

.721.061.552.213. 134.686.90

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



10000METERS





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

59.ee87.ee

ies.eei3e.eei4e.eeH4.eeH7.ee7i.ee46.ee2e.ee

111

+ + + DIGITIZEDQ

<S __ __ __Q p^7 -17^17^5.--- I- r -r c"i"

CRLCULRTED LRYERING FORT BLISS 50

inC£u

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INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


. 19

.27

.40

.59

.661.261.612.363.604.87

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







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


1 10 100 1000 10000


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


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

1000919.09

68.30119.02188.46245.02240.54179.0095.3837.5610.522.13.44.62

5.55

1 14







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

1 15

CD CD

-I- + + DIGITIZED CflLCULRTED LRYERING FORT BLISS 52

CD TTT::. .......i... ,..-I


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.23

.33

.49

.721.051.552.273.244.606.60

10. 15

52.0652.3853.5253.5450.3046.3459.0569.62

117.27107.0473.17

14.9822.2030.6540.5060.9694.52

143.55213.57307.69434.13641.81

1000640.81

49. 1158.54

147.94269.57195.75140.85102.7067.3731.1513.5611.931.31

1 16

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3.054.2?6.109. 14

12.1916.2924.3830.4830.4642.6760.96

60.5068.5073.0072.0070.0077.0090.00

102.00104.00126.00154.00

91.44121.92162.68243.84304.60304.80426.72609.60914.40914.40

1219.20

168.00155.00122.0087.0064.0056.0039.0027.0010.0011.504.60

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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

+ + + DIGITIZED FORT BLISS 54

11


INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

INTERPRETEDDEPTH

IN METERS


IN OHM-METERS

.23

.33

.49

.721.051.552.273.324.876.979.27

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

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