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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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