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DS 232: Texas Aeromagnetic Data Index Map

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Survey
no1
Survey
type2
Survey name3 Flown by4 Date flown Spacing5 Dir5 Altitude6
(ft)
MxLat7
(deg)
MnLat7
(deg)

MxLg7
(deg)
MnLg7
(deg)
LnMi8
(mi)
Datum9 Publication10

3062

M/R-D

Three Rivers (Freer)

Geodata

12/74

1 mi

NW-SE

500 AG

28.51

27.68

098.96

098.12

1,570

IGRF65

OF 75-294
Schultz, 1975

4116

M-D

East-central Texas

Airmag

11/82

6 mi

E-W

1,500 B

31.04

29.96

096.38

093.93

1,495

IGRF80

OF 84-208
USGS, 1984

4236A

M-D

Ouachita Trend/San Antonio

Aero

?/67–?/68

1.25 mi

N-S

2,800 B

30.33

28.30

100.65

097.50

18,435

?

unpub., proprietary

4236B

M-D

Ouachita Trend/Waco

Aero

?/67–?/68

1.25 mi

E-W

1,800 B

32.67

28.95

098.58

096.00

23,730

?

unpub., proprietary

4237A

M-Dz

North Ouachita Trend

Aero

?/67–?/68

1.25 mi

E-W

2,200 B

34.00

32.53

098.00

095.60

12,254

?

unpub.

4237B

M-Dz

Northwest San Antonio

Aero

?/67–?/68

1.25 mi

N-S

2,800 B

30.18

29.00

100.65

098.33

8,515

?

unpub.

4237C

M-Dz

Northeast San Antonio

Aero

?/67–?/68

1.25 mi

E-W

1,800 B

30.18

29.10

097.50

096.53

2,475

?

unpub.

4255

M-D

Edwards Aquifer

Spectra

3/01–4/01

0.25 mi

E-W

500 AG

29.62

29.21

100.03

098.75

9,830

DGRF2000

OF 02-0049
Smith and others, 2002

4269

M-D

Laredo North

Aero

?/76

1.86 mi

E-W

2,500 B

28.25

27.60

100.27

098.04

2,240

IGRF75

unpub., proprietary

4270

M-Dz

Laredo South

Aero

?/76

1.86 mi

E-W

2,500 B

28.75

26.25

099.78

098.61

3,400

IGRF75

unpub., proprietary

5025

M/R-D

Christmas Mountains

HighLife

06/79

0.25 mi

E-W

400 AG

29.50

29.38

104.00

103.30

483

IGRF75

GJBX-195(82)
High-Life Helicopters, 1982

5026

M/R-D

El Solatario

HighLife

06/79

0.25 mi

E-W

400 AG

29.50

29.28

103.88

103.68

551

IGRF75

GJBX-195(82)
High-Life Helicopters, 1982

5027

M/R-D

Green Valley/O2 Ranch

HighLife

06/79

0.25 mi

E-W

400 AG

29.97

29.50

103.88

103.53

2,070

IGRF75

GJBX-195(82)
High-Life Helicopters, 1982

5028

M/R-D

Buckshot/Sierra Viego

HighLife

07/79–08/79

0.25 mi

E-W

400 AG

30.61

29.70

104.90

104.17

3,899

IGRF75

GJBX-196(82)
High-Life Helicopters
and QEB, 1982

5030

M/R-D

Dryden

HighLife

06/79–07/79

0.25 mi

E-W

400 AG

30.25

29.78

102.29

101.70

3,870

IGRF75

GJBX-024(83)
High-Life Helicopters, 1983

6003

M/R-D

Southeast Texas
(parts of Laredo,
Seguin, and Austin)

Geodata

05/74–06/74

0.25 and 5 mi

NW-SE

400 AG

31.25

26.25

099.25

093.67

6,640

?

GJO-1632
Geodata International, Inc., 1975a

6006

M/R-D

Lubbock/Plainview

Geodata

04/75–06/75

3 mi

E-W

400 AG

35.00

33.00

102.00

100.00

6,776

?

GJO-1654
Geodata International, Inc., 1975b

6014

M/R-D

Red River Block A
(Amarillo, Brownfield,
Clovis, and Tucumcari)

Geodata

03/76–05/76

3 mi

E-W

400 AG

36.00

33.00

104.00

100.00

11,840

IGRF65

GJBX-033(76)
Geodata International, Inc., 1976a

6015

M/R-D

Red River Block B
(Lawton and Wichita Falls)

Geodata

06/76–07/76

3 mi

E-W

400 AG

36.00

33.00

100.00

096.00

11,840

IGRF65

GJBX-034(76)
Geodata International, Inc., 1976b

6021

M/R-D

Red River Block C
(Abilene)

T.I.

08/76–09/76

3 mi

E-W

400 AG

35.00

32.00

100.00

096.00

12,030

IGRF?

GJBX-017(77)
Texas Instruments, Inc., 1977

6030

M/R-D

Southwest Texas
(Pecos and Van Horn)

GeoMet.

01/77

3 mi

E-W

400 AG

32.00

31.00

106.00

102.00

6,666

IGRF75

GJBX-002(78)
GeoMetrics, Inc., 1978c

6031

M/R-D

Texas Gulf Coast NW
(Crystal City)

GeoMet.

03/77–-05/77

3 mi

E-W

400 AG

31.00

26.42

100.00

096.00

9,275

IGRF65

GJBX-118(78)
GeoMetrics, Inc., 1978b

6032

M/R-D

Texas Gulf Coast SE
(Bay City, Beeville,
Houston, and
Seguin)

GeoMet.

03/77–05/77

3 mi

E-W

400 AG

30.00

26.00

098.33

094.00

8,900

IGRF65

GJBX-102(78)
GeoMetrics, Inc., 1978a

6065

M/R-D

Big Bend

LKB

01/78–02/78

3 mi

E-W

400 AG

31.00

28.92

105.50

102.00

7,529

IGRF65

GJBX-088(79)
LKB Resources, Inc., 1979

6079

M/R-D

Brownwood-Llano

Geodata

07/77–-08/78

3 mi

E-W

400 AG

32.00

30.00

100.00

098.00

6,417

IGRF65

GJBX-068(79)

GJBX-024(80)
Geodata International, Inc.,
1979, 1980f

6113

M/R-D

Dalhart

T.I.

05/79

3 mi

E-W

400 AG

37.00

36.00

104.00

102.00

3,038

IGRF?

GJBX-046(80)
Texas Instruments, Inc., 1980c

6114

M/R-D

Palestine/Beaumont

T.I.

05/79–06/79

3 mi

N-S

400 AG

32.00

31.00

096.00

094.00

3,232

IGRF?

GJBX-045(80)
Texas Instruments, Inc., 1980b

6115

M/R-D

Southeast Beaumont

T.I.

06/79

6 mi

E-W

400 AG

30.50

30.00

095.50

094.00

463

IGRF?

GJBX-044(80)
Texas Instruments, Inc., 1980a

6144

M/R-D

Texarkana

GeoMet.

10/79–11/79

3 mi

N-S

400 AG

34.00

33.00

096.00

094.00

3,157

IGRF75

GJBX-069(80)
GeoMetrics, Inc., 1980a

6145

M/R-D

Tyler

GeoMet.

10/79–11/79

3 mi

E-W

400 AG

33.00

32.00

096.00

094.00

3,166

IGRF75

GJBX-069(80)
GeoMetrics, Inc., 1980a

6146

M/R-D

West Waco

GeoMet.

10/79–11/79

6 mi

E-W

400 AG

32.00

31.00

098.00

097.00

920

IGRF75

GJBX-069(80)
GeoMetrics, Inc., 1980a

6147

M/R-D

East Waco

GeoMet.

10/79–11/79

3 mi

E-W

400 AG

32.00

31.00

097.00

096.00

1,625

IGRF75

GJBX-069(80)
GeoMetrics, Inc., 1980a

6153

M/R-D

Las Cruces/El Paso

Carson

11/79–04/80

3 mi

E-W

400 AG

33.00

31.50

108.00

106.00

3,074

IGRF75

GJBX-412(81)
Carson Helicopters, Inc., 1981

6157

M/R-D

West Texas Project
(Big Springs, Del Rio,
Eagle Pass, Hobbs,
San Angelo, and Sonora)

Geodata

02/80–04/80

3 mi

E-W

400 AG

33.00

28.17

104.00

098.00

18,060

IGRF75

GJBX-156(80)

GJBX-157(80)
GJBX-168(80)

GJBX-196(80)
GJBX-228(80)
GJBX-245(80)
Geodata International, Inc.,
1980b,1980c, 1980d, 1980e,
1980h, 1980i

6163

M/R-D

Perryton/Woodward

Geodata

05/80

6 mi

E-W

400 AG

37.00

36.00

102.00

098.00

3,496

IGRF75

GJBX-229(80)
Geodata International, Inc., 1980g

6164

M/R-D

South-central U.S.
(Alexandria)

Geodata

05/80–07/80

6 mi

E-W

400 AG

37.00

31.00

096.00

086.00

31,626

IGRF75

GJBX-152(80)
Geodata International, Inc., 1980a

6180

M/R-D

Gulf Coast
(Lake Charles and
Port Arthur)

GeoMet.

08/80–09/80

6 mi

E-W

400 AG

31.00

29.00

094.00

088.00

7,658

IGRF75

GJBX-224(80)
Geometrics, Inc., 1980b

   1Survey no.: Internal USGS identification number.
   2Survey type: M, magnetics; R, radiometrics; D, digital data; Dz, digitized data.
   3Survey name: Internal project name (not always the name used in publication title).
   4Flown by: Company or government agency who flew the original survey.  Aero, Aero Service Corp.; Airmag, Airmag Surveys, Inc.;  Carson, Carson Helicopters, Inc.; Geodata, Geodata International, Inc.; GeoMet., GeoMetrics, Inc.; HighLife, High-Life Helicopters, Inc.; LKB, LKB Resources, Inc.; Spectra, Spectra Exploration Geoscience Corp.; T.I., Texas Instruments, Inc.
   5Spacing and Dir.: Primary flight-line spacing and primary flight-line direction.
   6Altitude: Primary flight altitude in feet; B, barometric elevation; AG, above ground and draped over topography.
   7MxLat, MnLat, MxLg, MnLg: Maximum latitude, minimum latitude, maximum longitude, and minimum longitude, respectively, in degrees.
   8LnMi: Total number of line miles flown.
   9Datum:  Original magnetic reference field datum used by contractor.
  10Publication
: Brief publication reference. USGS publications are listed as: OF, Open-File Reports xx-yyyy, where xx is the publication year and yyyy is the publication number.   NURE (National Uranium Resource Evaluation) publications are listed as GJBX or GJO.

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