UNITED STATES DEPARTMENT OF THE INTERIOR
GEOLOGICAL SURVEY
PRINCIPAL FACTS FOR GRAVITY STATIONS IN FLATHEAD, GLACIER,
PONDERA AND TETON COUNTIES, MONTANA
by
Dolores M, Wilson
Open-File Report 78-104
1978
Principal facts for gravity stations in Flathead, Glacier, Pondera
and Teton counties, Montana
by
Dolores M. Wilson
Introduction
A gravity survey was made in parts of Flathead, Glacier, Pondera and
Teton counties, Montana, to provide information on structural relationships
and subsurface geology as part of geologic mapping and resource evaluation
projects of the U.S. Geological Survey.
Data Collection
During the summer of 1976, 261 gravity stations were established with
Worden gravity meter E-134. The gravity stations were referenced to base
stations ACIC 1204-0 at Choteau, Montana; ACIC 0508-2 at Cutbank, Montana;
and ACIC 1211-0 at East Glacier, Montana, of the International Gravity
Standardization Net 1971 (Defense Mapping Agency Aerospace Center, 1974).
Secondary base stations were established at Browning, Montana, at the
Bear Creek guest ranch west of Marias Pass, and at the Bella Vista Motel
in Choteau, Montana. The base station at Browning is located at spot
elevation 4362 on the U.S.G.S. 1:24,000 topographic map of Browning,
Montana. The elevation is at the intersection where U.S. highway 89 turns
west and is northeast of the bend in the highway taken by through traffic.
The Browning base station was tied to the bases at Cutbank and East Glacier,
The base station designated BEARBASE is located on the northeast corner
of the U.S. highway 89 bridge over Bear Creek at the entrance to the Bear
I/ Use of brand names in this report is for descriptive purposes only and
in no way constitutes endorsement by the U.S. Geological Survey.
1
CHOT5AO
Figure 1. Are^ of gravity survey in plathead, Glacier, Pondera and Teton
Counties, Montana*
Creek Guest Ranch approximately six miles west of Marias Pass. It is tied
to the gravity net base at East Glacier,.Montana. The base station
designated BELLBASE is located on the concrete porch of unit 17 at the
Bella Vista Motel in Choteau, Montana, and was tied to the gravity net
base at Choteau. The area covered by the survey is shown in Figure 1.
Station elevations were obtained from benchmarks, spot elevations,
and contour interpolations on 1:24,000 scale topographic maps. Elevations
are accurate to 1-2 m in areas of low relief, but may be in error by
5-10 m in more rugged terrain. The resultant error in Bouguer anomaly
is less than 2 mgal.
Data Reduction
The gravity data were reduced by means of a digital computer program
by G. I. Evenden and R. R. Wahl (unpub.). Gravity meter readings were
converted to observed gravity using the International Gravity Standardization
Net 1971 base values. The Geodetic Reference System 1967 formula
(International Association of Geodesy, 1967) was used to compute theoretical
gravity. The data were reduced to Bouguer anomaly values using an assumed
3 average rock density of 2.67 gin/cm . Terrain corrections were made by
hand template through Zone H of Hammer (1939) and to 167 km by digital
computer (Wahl, unpub.). The total computed corrections ranged from 0.04
mgal four miles northwest of Choteau to 16.19 mgal at Nimrod. Corrections
were made for tidal effects and linear instrument drift.
The principal facts for the gravity stations are listed in Table 1.
Explanation of headings in Table 1:
STATION IDENTIFICATION Gravity station number
LATITUDE North latitude in degrees, minutes, and
hundredths of minutes.
3
LONGITUDE
ELEV
ST
OBSERVED GRAVITY
STD. GRAVITY
TERRAIN
FREE-AIR
BOUGUER
BOUGUER ANOMALY
West longitude in degrees, minutes, and
hundredths of minutes.
Elevation in feet (to convert to meters,
multiply by 0.3048).
State where station is located (Montana)
Observed gravity in milligals.
Theoretical gravity.
Terrain correction in milligals.
Free-air anomaly in milligals.
Elevation and curvature correction in
milligals.
Bouguer anomaly in milligals for assumed
3 average density of 2.67 gm/cm .
BOUGUEH GRAVITY DATA
PAGE
CHOTKAU-EAST GLACIER
D. M.
WILSON
1976
DENSITY:
2.67
STATION
IDEN
TIFI
CATI
ON
GPAVTY.
GPAVTY.
GRAVTY.
GPAVTY,
GRAVTY.
GRAVTY.
GRAVTY.
GPAVTY.
GRAVTY.
GPAVTY.
GRftVTY.
GPftVTY.
GPfVTY.
GPAVTY.
GRAVTY.
GKnVTY.
GPAVTY.
GRAVTY.
GPtvVTY.
GRAVTY.
GRAVTY.
GPRVTY.
GPAVTY.
GPAVTY.
GPAVTY.
GPAVTY.
GRAVTY.
GRAV
TY.
GRAVTY.
GRAVTY.
GPAVTY.
GPAV
TY.
GRAVTY.
GPAVTY.
GPAVTY.
GPAVTY.
GRAVTY.
GPAVTY.
GRAVTY.
GRAVTy.
BRWNBASE
CH001
CH002
CH003
CH004
CH005
CH006
CH007
CH008
EASTBASE
EASTBASE
CH010
CH011
CH9H
CH009
CH012
BEARRASE
EASTBASE
CHQ13
CH014
CH015
CM016
CH017
CH018
CMC 19
CH020
CH021
CH023
CH024
CH025
CH026
CH027
CH028
CH029
BEARBASE
CH030
CH031
CH032
CH033
CH034
LATITUDE
48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48 48
31.36
29.65
28.18
26.51
25.45
25.03
24.56
24.08
23.74
23.46
23.39
23.38
22.59
22.09
21.45
20.80
20.30
19.43
18.77
18.04
17.49
16.77
15.77
15.11
14.40
14.39
15.62
16.95
14.11
25.28
24.99
24.30
23.99
23.67
LOCATION
LONGITUDE
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
4.71
7.32
9.02
13.10
12.61
13.22
14.10
15.17
15.30
15.45
15.54
15.53
16.54
16.72
17.74
18.82
19.57
20.78
21.47
22.70
24.18
25.54
26.97
27. P8
30.26
34.15
34.46
36.60
32.11
11.01
9.99
9.56
8.75
7,66
ELEV.
4362.0
4634.0
4995.0
4957.0
4795.0
4775.0
4782.0
4800.0
4957.0
4795.0
4795.0
49HO.O
4980.0
5000.0
5000.0
5060.0
4430.0
4795.0
5084.0
4980.0
5072.0
5120.0
5200.0
5240.0
4956.0
4715.0
4520.0
43R7.0
4362.0
4220.0
3970.0
4044.0
3860.0
4080.0
4430.0
4726.0
4776.0
4554.0
4624.0
4868.0
ST.
MT MT MT MT MT MT MT MT MT MT
MTMT
MTMT MT MT MT MT MT MT MTMTMTMTMT
MTMT MT MT MT
MT MT MT MT MT MT MT MTMT MT
OBSERVED
GRAVITY
980540.56
980517.01
980493.^9
9P0495.24
980501.93
980502.42
980502.04
980499.02
930488.05
980501 .54
9*0501.64
9«048R.30
9804H7.D5
9HQ4H4.06
9&0483.73
98047P.51
9*0491 ,88
980501.64
9R047b,45
980481.20
9*0472.75
9R0467.30
980461 .16
980457.06
980469,06
980478.74
980489.39
9H0490.12
9HQ488.00
980484.92
9*0503.07
980500. *3
980512.32
980493. SI
980491. *8
980504.16
980500.71
980513.05
980506.37
980491.02
STD. GPV.
-980937.17
-980934.61
-980932.40
-980929.90
-980928.31
-9H0927.69
-980926.98
-980926.26
980925.75
-980925.33
-980925.23
-980925.21
-980924.03
-980923.28
-980922.32
-980921.35
-980920.60
-980919.29
-980918.30
-9P09J7.21
-980916.38
-980915.30
-9H0913.80
.-98
0912
.81
-980911.75
-980911.73
-980913.58
-980915.57
-980911.31
-980928.06
-980927.&2
-930926.59
-980926.13
-980925.65
CORRECTIONS
TERRAIN
. FREE-AIK
0.00
0.3H
0.58
0.61
1.30
1.36
1.48
1.62
1.38
0.00
o.oo
1.37
1 .37
1.37
1.39
1.55
o.oo
o.oo
1.45
2.29
2,57
2.69
2.68
2.68
10.88
8.88
6.70
6.37
6.68
15.83
16.19
11.56
10.51
15.80
0.00
1.19
1.05
1.36
1.39
1.25
435.63
469.55
465.98
450,76
448.88
449.54
451.23
465.98
468.14
468. J
4470.02
470.02
475.66
477.92
468.14
478.79
481 .30
48R.82
492.58
465.89
443.24
424,92
412.42
410.07
396.72
373,23
380.18
362.89
383.56
444.27
448.97
428,11
434.69
457.62
BOUGUER
SPECIAL
-159.42
-171.78
-170.47
-164.93
-164.24
-164.48
-165.10
-170.47
-171.26
-171.26
-171.95
-171.95
-174.00
-174.82
-171.26
-174.41
-176.05
-178.79
-180.16
-170.44
-162.19
-155.51
-150.95
-150.10
-145.23
-136.66
-139.20
-132.89
-140.43
-162.57
-164.28
-156.68
-159.07
-167.43
BOUGUER
ANOMALY
-143.5
7-1
42
.57
-141.0
4-1
40.8
4
-139,8
9-1
39.1
1-1
40
.21
-141.3
2
-139.2
0-1
40.0
3-1
41.7
3-1
42.0
2
-142.3
1
142.2
.8 1
41.9
5
143.6
5 1
45.3
6 1
45.4
2 1
46.1
4 1
*41.
82
147.7
1 1
49.8
0 1
55.8
4 1
53.1
6 1
59.5
1
155.9
0 1
60.6
1 1
62.2
4 1
58.8
7
141.0
1 1
41.1
7 1
40
.75
142,7
5 1
43.1
9
SP
EC
,FI
£LT
>
Tabl
e 1.
Principal
facts
for
grav
ity
stations in Flathead,
Glacier, Pondera
and
Teto
n Co
unti
es,
Mont
ana.
,
BOUGUER GRAVITY DATA
PAGE
SHOTEAU-EAST GLACIER
STATION
IDENTIFICATION
GRAVTY.
GRaVTy,
GRAVTY.
GRAVTY.
GRAVTY,
GRAVTY.
GRAVTY,
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRftVTY,
GRAVTY.
GRAVTY.
GRAV
TY;
GR&V
TY.
GRAVTY.
v-. A
v TY
1.
GRAVTY.
GRAVTY.
GRWTY,
GRAVTY.
GRAVTy.
G».A
VTY.
GRft
VTY.
GRUVTY.
GRAVTY.
GKA'
VTY.
GRAVTY.
GRRVTY.
GP.^
VTY.
GRAVTY.
GRAVTY.
GRAV
TY.
GRAVTY.
GRAVTY.
GPAVTY.
CRAFTY.
GRAVTY.
GRAVTY.
CH035
CH036
CH037
CH038
CH039
CH040
3EARBASE
BEARBA5E
BR*»NBASE
CH043
CH042
CH044
CH045
CH046
CH047
CH048
CH049
cnc'sri
CH051
BRV'BASE
CH052
CH053
CH054
CH055
CH056
CH057
CH058
CH059
CH060
CH061
CH062
CK063
CH064
CH065
CH066
CH067
CH068
CH069
CH070
BRWNBASE
LATITUDE
48 23.37
48 22.48
48 21. R3
48 21.74
48 21.62
48 21.62
48 30.75
48 32.28
48 31.81
48 28,94
48 2«,34
48 26.79
48 25,84
48 24,67
43 18,77
48 32.06
48 30.99
48 28.37
48 26.95
48 25,61
48 23.62
48 24.78
48 25.27
48 27.03
48 14.12
48 11.11
48
9,81
48
7,17
48
5,54
48
4.40
4b
4.43
48
4.44
48
4.43
48
4.43
LOCATION
LONGITUDE
-113
6,34
-113
4,99
-113
3.99
-113
2,90
-113
1.40
113
0,59
-113
3.46
-113
6.56
-113
5,77
-112 49
9H6
-112 47.99
-112 43.70
-112 41
,72
-112 38,80
-112 31,97
-113
0,70
-113
0,38
-112 59,27
-112 59,24
-112 59,37
-113
0,42
-112 57,22
-112 52.95
-112 50.08
-112 31,87
-112 30
, H4
-112 27.P5
-112 22.35
-112 21
.03
-112 19,90
-112 22.26
-112 25,78
-112 24.38
-112 25.15
ELEV,
4807,0
4785,0
4995.0
4844.0
4655.0
4633.0
4430.0
4430.0
4362.0
4460.0
4405.0
4370.0
4795.0
3975,0
4145.0
3918,0
4150,0
J t-
3 5
, 043b2,0
4455,0
4545,0
4794,0
4712.0
4186.0
4538.0
4580,0
4063,0
4030,0
4030,0
4176,0
4317.0
4449,0
4416.0
4317,0
4367,0
4581,0
4525.0
4545.0
4362.0
ST.
MT MT
MT
MT
MT
MT
MT
MTMTMT
MT
MTMT
MTMT MT
MT MT
MTMT
MT
MTMT
MT
MT
MT MT MT
MT
MT
MT
MTMT MT NT
MT MT MT MT MI
OBSE
RVED
GRAVITY
980492.68
980491,97
980477.25
9&OAb4,34
980493,44
9*0495,64
9 8 0 A 9
1 . 8 8
980491.88
980540,50
980524,98
9»0535,31
980535.73
9H0532.H2
980551,61
980543. bo
9*0557,73
9B0543.94
9*0?-i7, 10
980540,56
980531.29
9*0523.99
980501 ,08
980501.62
9*0530. 19
98051)5,03
9*0503,83
9«053b, t7
980542,40
980520,85
960509,50
980506,75
980502.06
980503.51
980511,19
980504. B2
980484,42
980491,07
980488,80
9b0540.5b
CORRECTIONS
STD, GBV.
TERRAIN
.-980925,20
«9b0923.*b
-980922,89
980922,75
-980922.57
-980922.57
-980936,26
-980938,55
-980937,84
-980933.54
-980932.65
-980930,32
980928.90
-980927.15
-9>3091H,30
-980936.22
-900936,61
-980932,69
-9H0930. bfc
-980928,55
-980925,57
-980927,31
-9b092w,04
-980930. t>8
-980911,33
-980906,81
-9eU904,b6
-980900,90
980898.46
-980896,75
980896.79
-980896.81
-980890,79
-980896,79
1.19
1,15
1,14
1.06
0.98
0.91
0.00
0.00
o.oo
0.44
0.59
0.60
0.31
0,35
0,14
0.13
0.31
rJ
-r^o
O.U3
0,00
0.30
0.32
0,45
0.42
1.56
0.75
0.97
1.17
0.39
0.16
0.21
0.32
0.64
0.48
0.39
0.41
0.52
0.47
0.49
0,00
FfttE-AlH
451.89
449.82
469,56
455,36
437,60
435,54
419,28
414.11
410.82
403.77
373,70
389, b7
368,34
390.14
365.24
418.80
427.26
450,66
442.96
393, b3
426.61
43u,bb
381 ,97
37b,«6
37*. H7
392,59
405, b4
418. 2b
415.15
40b.H4
410,54
430,65
425.39
427.27
BUUGUhK
SPEC.
BQUGUER
SPECIAL.
ANCr
tALt
*'
ItLi
3
-165,34
-ib4,59
-171*78
-166,61
-160,13
-159.38
153,46
-151,57
-150,37
-147, bO
-136,83
-142, b6
-134, b«
-142,83
-133,74
-153,28
-156.37
164, »9
-Io2,09
144, U6
-156,13
-157,57
-139,85
-13b,72
-138,72
-143.72
-1*8. b5
-153,08
151 ,95
14b,55
150,27
-157,60
155,68
156,37
-144,
-145,
-146.
-148.
150.
149,
-145.
-140,
-141.
-144.
-143.
-13*.
-137.
-135,
-139
..
-141.
-141,
-145,
-147,
-147,
-149.
-149,
-148,
-147,
-150,
-14o.
-14J,
-133,
-131.
-127.
131,
-13B,
-135,
136,
78
51 72 oU 68 bo 02 11 0644*2 bl 58 b9 t>2
11 41 39 ob 33 31 53 Uo 75 17 23
5U 03 27 86 29 82
5460
GRAVTY.BEARBASE
4430,0
MT
980491.88
0,00
BOUGUER GRAVITY DATA
HA
GL
CH
OT
EA
U-C
AST
G
LA
CIE
R
STATION
IDEN
TIFI
CATI
ON
GRAVTY.
GPAVTY.
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY.
GRAVTY.
GRAVTy.
GRAVTY.
GRAV
TY,
GRAVTY.
GRAVTY.
GRAVTY.
GRAV7Y,
GP.A
VTY.
GRAVTY,
GR,*VTY.
GRtVTY.
GRAV
TY,
GRAVTY,
GRAVTY,
GP.jVTy,
GBaVTY.
GRAVTY.
GRAVTY.
GRAVTY,
GPAVTY.
GRAVTY,
GRAVTY,
GRAVTY.
GRAVTY,
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRft
VTY.
GRAVTY.
GRAVTY.
GRAVTY.
CH071
CH072
CH073
CM074
CH075
CH076
CH077
CH078
CH079
CH080
BEARBASE
CH40BASK
CH081
CH082
CHO&3
CH084
CHGK5
CH086
CHG87
CH088
CHC89
CH090
CH091
CH092
CHQ93
CH094
CH095
CH096
CH097
CH098
CH099
CH100
CH101
BEAHBASE
BEAFBASE
CH102
CH103
CH104
CHIOS
CH106
LATITUDE
48 21.30
48 20,95
48 20,22
48 19,81
48 21,53
48 21.60
48 21.41
48 21,18
48 20,87
46 20,45
48 21.05
43 20,43
48 19,68
48 18,96
48 18,94
48 19,82
48 17,87
48 17,00
48 15,65
48 14,93
48 14,43
46 13,94
48 12,31
48 12.74
48 12,71
48 18.68
4b 14,56
48 15,21
48 19,82
48 21,98
48 22,84
48 19,76
48 19,41
48 18,94
48 19,10
48 19.46
LOCATI
ONLONGITUDE
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-112
-112
-112
-112
-112
-112
-112
-1 12
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-113
-113
-113
-113
16,6
315,79
17,09
18,15
14,72
13,70
12,72
11,97
11,60
9,87
59,54
58.83
5«,3«
56,79
54, R3
53,02
50.15
50,16
49,39
47.31
45,04
43.85
42,07
3P.10
33,97
35,07
42,94
40,31
48,81
47.96
45.58
59.70
0,72
0,97
2,08
3,17
ELEV,
4940,0
5?98,0
5395,0
5033.0
4^19,0
4900,0
4977.0
5?30,0
5430,0
5974,0
4430,0
4633.0
4673.0
4520,0
4412.0
4532.0
447H.O
4543.0
4434,0
4462,0
4703.0
4 4 8
.1 . 0
4493,0
4330,0
4544,0
4394,0
4248.0
3976.0
4365.0
4342,0
4264,0
415*, 0
4033,0
4430,0
4430,0
4512.0
4620.0
4527,0
5270,0
5355.0
ST.
MT MT MT MT MT MT MT MT MT Ml MT
MTMT MT MT MTMT MT MT MT MT MTMT MT MT MT MT MT MT MT MT MT MT MT MT MT MI MT MT MT
QHSS
KVED
GRAVITY
980487.00
930404,58
98045V. 51
980674,55
9804«H,42
950443.75
980440,13
9 H 0 4 7 0
, 9 3
9^0463,00
96042H.22
960491 ,o3
9120495. 17
9B0490.42
960497.99
930502.36
93049. 1.63
980497.27
9o049i,30
9*049b,06
980495.25
960473,12
9P 0490. 8 6
980490,40
9HQ497 .36
9B04&5.30
980495,87
960503,92
930533.12
930503.43
980505.94
9H0515.04
9B0527.60
98053b,46
930491 .63
980491.88
980497.45
980491.25
980495,94
980455,14
980453. 7&
co;RREC'IIONS
STD, GFV.
TERRAIN
FREE-AIR
-980922.13
-980921.57
-960920.48
-9a0
9l9.
b'&
-98U922.44
.960922,54
-9H0922.2&
-9d092l,yi
-930921,45
-980920. b2
-980921,72
-930920,79
-980919. b7
-980913.59
-980918.56
-960913, 3a
-960916.55
-980915.65
-930953.62
-960
-^12
,54
-980911.79
-930911.06
980903 ,ol
-9809U9.26
-930909,21
-9*0913,17
-930911.99
-980912.96
,
-930919,88
-930
923.
11-980924,40
-980919.79
-960919,26
-930916,56
-930916. bO
-980919.34
2.53
2,32
3.26
3.37
1,69
1,39
1,93
. I.
b51.95
2,58
0,00
0,00
0.68
0,77
0.99
0.87
0.71
0,57
0,51
0,6B
0.76
0,74
0,63
0,47
0,47
0,35
0,24
0,26
0.40
0,41
0,35
0.28
0,21
0.00
0,00
1.08
2.66
3,14
2,36
1,55
464.36
49b,03
507.14
477.62
462.41
46U.63
467, fe6
49b,33
51U.43
561,55
439.29
424.92
4U.77
426.04
**2U,97
427.55
416.33
4iy,
47
442,11
*21.25
422,33
411.7&
427,17
413,06
399.35
373,79
410.35
408,19
400,86
390.90
383.35
424.17
434.32
425.57
49b,40
503,33
B-GU
G'JU
R
169,89
-182.14
135,46
-174.79
-Ib9,l7
-166,52
-171, 16
-1K1.53
-186.66
205.25
160.75
-155.51
-151,81
-155,92
-154,07
-150,47
-152. b6
-153.52
-161.78
-154,17
-154.59
-150.71
-150,33
-151,19
-140.19
-13o, bb
-150.20
-149,41
-146,74
143,11
-140,53
-155.24
153,94
-155,75
-131,19
-184,09
SP
EC
IAL
13
3,1
6133,2
61
36
.03
13
0.4
1
-lb-4
.79
-16
3,5
0-1
34
,33
-13
2,7
3
'15
2.0
6
'152,6
45
'15
3.3
4
15
3,9
7 1
53,
bb
154.1
1 1
53
.77
15
4,
*1 1
53.3
0 1
52
.91
-ibl.
94
-Ib
l.lb
-Ib
i.b
y-1
47
.be
-14
b ,
i' 1
-14
7,b
3
-150.3
7-1
47,4
4-1
45
.41
'152.3
3 1
4V
.97
14
9.6
0 1
47
,09
'144,3
5
SPfc
C
FIf
cLl
GR
AV
TY
. C
H10
7 48
2
0,6
7
-113
0.1
6
46
63
.0
MT
98
04
89
,05
-9
80921,1
54
33
,35
-1
60.4
1 1
53,3
5
BOUG
UER
GRAVITY
DATA
PAGE
CHDTEAU-CAST GLACIER
STATION
IDEN
TIFI
CATI
ON
GRAVTY.
GRAV
TY.
GPAVTY.
CHIOS
CH109
Chno
GRAVTY. BEARBASE
LATITUDE
48 20,38
48 19.85
48 20,65
LOCATION
OBSERVED
cot
LONGITUDE
-113
-1
13
-113
2.67
3.57
1.23
GRAVTY. BEAPBASE
GRAV
TY.
GRA.
VTY.
GRAVTY.
CHlll
CH112
CH113
GRAVTY. BEAHBASE
48 16,86
48 16,95
48 16,25
-112
-112
-1
12
51,33
52,30
54,21
GRAVTY. BEAPBASE
GRAVTY.
GRAVTY.
GRAVTY,
GRAVTY,
GRAV
TY,
GPAVTY.
GRAVTY.
GRfc
VTY.
GRA^
TY.
GRAVTY.
GRAVTY.
GRAVTY.
GRt'
/TY.
GRAV
TY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY,
GRAVTY,
GRAVTY.
CH1 14
CH115
CH116
CK117
CH119
CH120
CH121
CH124
CH122
. CH123
BEARBASE
BEAHBASE
CH125
CH12
<3
CH127
CH128
CH129
CH130
CH131
CH132
CH133
CH134
CH135
CH136
CH137
GRAVTY.
CH138
GRAVTY.
CH139
GRAVTY.
CH140
GRAVTY. BEARBASE
GRaVTY..BEARBASE
48 19,44
48 18,73
48 18,20
48 17.38
48 17.31
48 17, Q7
48 16
, hi
48 18,48
48. 17,29
48 18.13
48 18,68
48 17,87
48 17.60
48 17,28
48 16,68
48 17.32
48 16, H3
48 16.67
48 15.59
48 15.74
48 13.61
48 13,39
48 14.25
48 14,69
48 15,24
48 15,60
-113
-113
-113
-113
-113
-113
-113
-113
-113
-113
-112
-112
-1
12
-112
-112
-112
-112
-112
-112
-1
12
-112
-112
-112
-112
-1
12
-112
18,11
17.2
6 16
,14
15,1
6 13
.14
12.3
011
,26
8.47
9.64
9.43
57.82
57. P2
5K.76
59,70
59, P8
57.94
56.62
54,«9
53.19
52,46
53, 36
53,56
52,70
51,72
51.24
50,44
ELEV,
5100.0
5190.0
4818.0
4430.0
4430.0
4684.0
4596.0
4824.0
4430.0
4430.0
5130,0
5 1 H A
, 0
52S4.0
5353.0
5492.0
5595.0
5*6f?,0
7016.0
6001,0
6382.0
4430,0
4430.0
4648,0
4738.0
4804.0
5225.0
5330.0
4908,0
5170.0
4964.0
4970.0
4995.0
5090,0
5077.0
4900.0
4H21.0
4920.0
4740.0
4430.0
4430.0
ST.
MT
MT
MT
MT MT MTMT
MT MT MT MT MT MTMT
MT MT HT MT MT MT MTMT MT MT riT
MTMT
MT MT
MT HT
MT
MT MT
MT MT
MT
MT MTMT
<RECTIUNS
GKAV
J.TX
STD.
V.;K
V.
TERRAIN
FREE-AIK
980466,92
980465,00
9«0479,41
9 6 0 4 9
1 . 8 b
980491 ,b3
9B04B1 .04
9B04H0.07
9*0470.51
960491. b&
98p491,b8
9«0471.98
9*0469. 7St
9^0405. 77
9fe0
4t>3
.55
9^-0455,95
93 0^50, 53
980445.85
9 V 0 3 b 4
. t» 5
9^0426,20
9 R 0 4 0 5
. 1
1
980491 ,
8b
9P049l.8b
9 B 0 4 H 5
, 0 8
960479.61
98Q47b,lB
9H0449.35
980443,16
980^69,10
980451.79
98046c ,74
9804
.60
n01
9b04b«,b4
980450,03
9W045G
U50
9 6 o 4 6 2
, 6 b
9tfo46fc,,t>2
930463,35
9o0476
B34
980491, B8
9«049l.,H8
»9ti0920,72
-980919,92
«9d0921,12
-980915.44
»980915,57
-980914.52
-9H0919.31
«9b09iB.i!4
-9bC917.45
-9«0glb.97
-9b0916.il
-980915.75
-9b09l5.06
-960917. W7
-9b091o,08
-960917 .34
-980918.17
-9*0916.95
-980916.55
-98091b,07
-9*0915.17
-9B0916.13
-9du915.39
-9^0915.15
,
-980913.53
-9b0913.76
-980910.56
-9«0910.23
-980911.52
-980912.18
-9B0913.01
-9b09l3.b5
1.53
1.88
0.90
o.oo
o.oo
0.84
0.98
1.
29o.
oo0.
00
4.34
4.
73
4.99
4,82
3,
35
3.56
3.77
7.56
4.
52 5.57
o.oo
0,00
l.
lto
1.B5
1.97
2.12
2.61
2.23
2.25
1,27
1.13
1.15
l.«2
1.69
1.10
0.91
0.94
0,79
0.00
0.00
479.42
487. b'8
452.92
440.33
432,06
453.49
48X.24
487.31
496.71
503,19
Slfc.ib
525.94
53ii.80
659.44
564. OB
599.88
43b.95
445.40
451.61
491.17
501 .0
3 461.38
48e,00
<*57
.25
407.21
4oV,56
47t(
.43
477.26
460,63
453.20
462.51
445,59
BOUGUER
-175,37
-178,45
-165,72
"161.13
-I5d.ll
-165.92
-176.39
17b.24
-161 ,66
-184.02
-J8B.78
-192.30
-194.79
-240. di
-200,17
219. IS
-159. b9
-162.98
-I6b,24
-179.65
-Ib3.24
-lbt
t.80
-177.76
-Ib7.29
-170.92
-171.78
-175.03
-174.58
-16B.52
-165,82
-169,21
-163,05
BUUGULK
SPfe^
ANUMALi
KlcLU
GR
AV
TY
.C
H14
1 48
1
8,7
1
-11
3
7,5
9
65
48
.0
MT
98
03
87
.36
-9
80918.2
1
5.2
1
61b,4
8
-22
4.8
5
-14
3.b
l I
b3.6
1
154,3
6 1
54
,57
155.1
5
13
7.1
4 1
34
.7u
13
1.0
4 1
2*.4
3 1
29.3
3
12
8.0
2 1
27
. 4j
i 2
b ,
b 3
12
7,4
b 1
25.4
0
154.
b7 1
53
.07
15
2.0
3
15
1.6
1 1
52.2
2 1
53.1
1 1
55.1
8
150,1
0 1
55.
*9 1
55.
i!o 1
55
.30
155,6
3
155,2
7 1
55,4
2 1
53
, eb
-134.9
9
BOUGUER GRAVITY DATA
PAGE
CHOTEAU-EAST GLACIER
STATION
IDENTIFICATION'
GRAVTY,
GPAVTY.
GH&VTY,
GRAVTY,
GRAVTY,
CH142
CH143
CH144
CH145
CH146
LATITUDE
48 19,01
49 19,65
48 20,] 1
48 20,31
48 20,82
LOCATION
LONGITUDE
-113
7,31
113
7,38
-113
6.45
-113
5,44
-113
4,04
GRAVTY. BEAR&ASE
f Q
« y T v
cv» K R V *
X , '
GRAVTy,
GPftVTY.
GRAVTY,
GPAVTY.
JPfcK&ASE
CH147
Chl4*
CH149
CH150
48
2,26
47 58,32
47 53,94
47 51,54
-112 2G.84
-112 18,27
-112 1S.R4
-112 14,49
GP-A
VTY.
CKOI
'BAS
FGRAVTY. I
GRAVTY.
GHAVTY.
GRAVTY.
GR&VTY.
GPAVTY.
GRAV
TY,
GR&V
TY,.
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY,
f! B »
V T V
O* A v
* «
*GR
svV'
TY.
GRft
VTY,
GRAVTY,
GRAVTY,
GPAVTY,
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY,
GRAVTY.
GRAVTY.
GRAV
TY,
<~o
I/TV
3ELLBASE
CH151
CH152
CH153
CH154
CH155
CH156
CH157
CH158
CH159
CH160
CH161
Chi62
CH163
CH164
CH165
CH166
CH167
BELLBASE
BELLBASE
CH168
CH169
CH170
CH171
CH172
CH173
CH174
CH175
r u
1 -I
*
47 53,14
47 53,78
47 54,41
47 55,03
47 55,54
47 55,29
47 56,14
47 56,75
47 57,46
47 53,20
47 52,96
47 53,09
47 53,31
47 53,20
47 52,99
47 52,77
47 52,23
47 53,06
47 53,35
47 53,15
47 53,11
47 53,10
47 53,17
47 52.32
47 52,07
AT RO .
A 7
-112 43,11
-112 43,45
-112 43,58
-112 44,50
-112 46,10
-112 47,39
-112 48.21
-112 4P.29
-112 49,19
112 47,25
-112 40,69
-112 39
, «3
-112 39,12
-112 3?, 48
-112 36,64
112 37,87
-112 38,87
-112 19,78
-112 21.98
-112 25,45
-112 29,85
-112 32,37
-112 33,70
-112 41,70
-112 42,75
119 41.41
ELEV.
6304,0
5678,0
5421,0
5339,0
5158,0
4430,0
4362.0
4100.0
3960.0
4027.0
3957.0
3320.0
3320.0
5088,0
514H.O
571H.O
5297,0
535b,0
5690, 0
6244,0
5832.0
5b89,0
5100,0
4965,0
4935.0
4903.0
4385,0
4793.0
^865.0
4962.0
3820,0
3P20.0
4133.0
4195,0
4321,0
4462.0
4614,0
4671,0
5170,0
5275,0
5336.0
ST.
MT MT MT MT HT MT MT MT
MT
MT MT HT MT MT MT
MT
Ml MT MT MT MT MT
MT MT MT MT MT MT
MT
MT MT MT
MT
MT
MT MT
MT MT MT Ml
MT
Q8SE
KVK.
D GPA'ITX
980410,39
9^0442,14
98045b,05
9 B 0 4 5 y
. -I J
98046 '1,
33
9«049 J ,8
89 8 0 5 4 0
, 5 b
9Ku53<.35
9 B 0 5 2
!:» . b
u
980'
5'Oi
,"b
7
990492,24
9805
0!5.
'97
9805
0-3,
V3
9 B 0 4 2 0
. 1 9
9 1} 0 4
1 H
, 7 0
9« 0415, 70
98041 3.4
B98040V, 43
98038J.76
9«035'-t,66
9b 038. 3
, 30
9 1' 03
8 o,5
3
9B0422.58
9&0431 .21
9fi043C,72
9 & 0 4 3 3
, B b
980435,00
9*0439.35
980435,32
98042*. 51
980505,73
980505.73
9 b 0 4 9
rf . 9 2
980491,30
98047j.be
980467,12
980452, S&
98045'J.OJ
980416,19
980407,43
980401.14
COKHEC'IIONS
SXD, GRV,
TEKRAIN
FREE-AIR
-980918,66
-98091*. 62
-980920,31
-SB0920,bi
-980921,37
-9b0893.54
-9b0
8«7,
t>2
-98u8bl,05
-980877,44
-980879, b5
-980880,81
980881.75
-98088<{.b8
-9bO
Pfc3
.45
-9bOyb3,u7
- Q 6 0 8 b 4
. 3 b
-930»85,27
-9bO«H6.33
-980879,94
-9b0879.bB
-9«0879,77
-9808H0.10
-9b0
879,
y4;
-980679,b2
-980879,29
-980876,48
-9b0879,73
-980880, 16
-980879, b6
-980879,80
-980879,79
-980879,89
-980878,62
-980878,24
-980878.24
4,89
3.30
3.39
2.19
1,45
0,00
0.00
0,33
0,09
0,16
0,04
0,00
0,00
12,12
12,45
12,22
12, *8
6,31
5,81
4,94
5,08
5,57
8,92
4,90
5,09
4,16
2,10
1.21
1,53
3.04
0,00
0.00
0,15
0,18
0,27
0,40
0,60
0,73
8,73
9,00
9.12
592,55
533,73
509,58
bOi.88
4B<*. 87
3W5.45
37*,
29
37b.59
372,01
47*,
30
483,94
490,52
497,94
503,
<*b
b34,b7
5bb,92
54*.
21
534,77
479,43
46B,b2
4bJ,92
461,38
459,22
450,
bb
457,34
46b,46
38fe,55
394,38
40c,22
419,47
433,70
439,11
480.01
495,87
506.30
BQUliUfcK
HUUGUER
SPECIAL
ANUHALX
-216,52
-195,14
-186,35
183.55
-177,35
-141,12
-136,32
-I3b,61
-136,21
-174,96
-177.01
-179,41
-182.11
184,13
-195,55
-214,47
-200,40
-I9b,5l
-175,37
-171,43
-169,72
-168, bO
-166,01
164, 8b
-Io7,33
-170,65
-142,25
-144,37
-146,09
-153,52
-15b,73
IbO.bS
177,76
"181,36
18b,15
-127.35
-135.59
-137, 0
4-140, bo
14b,07
-115,53
-12b,9b
-139.^4
"149,36
-144,20
-1*2,73
-142,72
-140. b*
-1-4
8 ,3b
-14*, 1*
14tt,3U
-149, OB
-152,97
-144,38
-140, ̂b
-145,7o
-14^,50
-151 .63
"153.34
-152,43
-150,12
134. 3b
-I3o.67
-142. I
tf
-146,33
-Ibl.bU
-150,7U
»14b.45
147.3U
-146,83
PAG
E
60U
GU
EI*
G
RA
VIT
Y
DA
TA
EL
EV
,
OBSERVED
Sft
GRKV11X
« <«.
GR
AV
TY
.
CH177
CH178
CH179
CH180
CH181
CH182
CH183
47
47
47
47
47 47
51
51
50
55
55 55
.93
,25
.85
,05
.57
A \
.4-5
1 _ %
-112
-112
-112
-112
-112
-112
_ 1
1
"3
45,
46,
46,
35.
37,
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54
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64
23 ,66
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56*9.
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4791,
4937,
5080,
5045
5325
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NT Ml
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90- " "
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980424,8& "9808*3.23
9B04V.9.80 -9«0ftl<4.04
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-
GR
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0.7
48
5 92
-112 39,65
4856,0
CH213
48
5,^^
I U A
3 .'*
6.98
7,35
0.97
1.32
5 17
/ . *
1 5
17
/ .
J 1
2,^2
3.59
2.99
4.07
o.oo
o.oo
0,36
0.47
0.69
0.79
1.00
1.18
I.fi4
2,27
0.34
0.18
0.27
0,58
so ii
\ 2
*3 i
. U *
* *
534,77
544, 04
'450.39
'46*. 11
'
477.55
474.20
500,b7
i. -j
i 30
D / J
-> 7
501,9^
589.83
415,24
4lo,y3
432.^4
^39,30
443.71
447.94
440,33
444.65
403.11
3 B b
7 o
39U.70
425.30
-190,16
195.51
199,10
-164.79
-169.79
-174.68
-173.49
-lbi.07
-209.55
-1B3.58
-215.53
-151. 9fl
-152.56
»158.25
-160.75
- i b
2 .
3 6
-103.90
-Iol.l3
-162.70
-147.56
-141
,t»U
-145.95
-155.65
43
5.7
3
-15
9.4
5
0,7
2
0,«
9
O.S
«8o.
oo
45
1.9
3
-165.3
7
473,1
3
-17
3.0
8
o.oo
0,40
0.26
0.25
0,34
0.33
0.51
0,66
0.69
0,57
370,86
387.23
T "
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3o / ,y»
401.23
38b.76
410.35
437.14
440.33
437.70
-135. BO
-141.77
-142, 04
-140. BB
-141.60
-150.20
-159.96
-161.13
-160.17
1.08
45
6.5
0
-167,0
2
SPEC
F
IEI
- 149,
3B-1
51
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-152,3
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53.3
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-153.3
9-1
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27
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15
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-151,00
-l3e.39
-12-
3. $5
-135.oB
-14B.44
-149,22
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9
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10
GRAVITY DATA
PAG
E
CH
OT
EA
U-E
A5T
G
LA
CIE
R
STATION
IDEN
TIFI
CATI
ON
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
CH214
CH215
CH216
CH217
LATITUDE
48
5,78
48
4.43
48
4,46
48
4.05
LOCATION
LONGITUDE
-112
-112
-112
-112
41,14
33,09
30.75
28,39
GRAVTY. BELLBASE
GRAV
TY.
GRAVTY.
GKAV
TY.
GRAVTY,
GRAVTY.
GR^VTY,
GRAVlY.
GRAVTY.
GRfVTY.
GRAVTY,
GRAVTY,
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GPRVTY.
GRAVTY.
GPAVTY.
GRAVTY.
GhAVTY.
GRAVTY.
GRiVTY.
GRAVTY,
GRAVTY.
GRAVTY,
GRAVTY.
GRAVTY.
GPAVTY.
GRAVTY.
GRAVTY,
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRiVTY.
BELLBASE
CH218
CH219
CH220
CH221
CH222
CH223
CH224
CH225
CH226
BELLBASE
6ELLBASE
CH227
CH228
CH229
CH230
CH231
Ch232
CH233
CH234
CH235
CH236
CH237
CH238
CH239
CH240
BELLHASE
BELLBASE
CH241
CH242
CH243
CH244
CH245
CH246
CH247
CH248
46 16.94
48 16.19
48 15.55
48 13
, 82
48 12,32
48 12
. B7
4« 14,45
48 17,18
48 16,79
47 46
, R8
47 46,65
47 47.48
47 49,18
47 49,21
47 49.21
47 49,62
47 50,76
47 51,48
47 52,36
47 47.80
47 47,04
47 46.17
47 46.19
48
0.01
48
1,07
48
0,60
48
1.80
48
2.62
48
3.31
48
2,90
48
2.11
-113
-113
-113
-113
-113
-113
-113
-113
-113
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
-112
21,61
21,42
21,06
19. «1
1 B
, 2 0
19,50
20,32
20,91
19,78
17,14
20,37
24,04
2S.17
30,32
32,41
33.74
34,76
35,34
35,66
32.R2
33, RO
33.79
35,30
34,02
37.37
42.35
42.18
43,23
42.78
41,32
39.15
BLEV.
4780.0
4593,0
4566.0
43b5.0
3320.0
3820.0
5137.0
5345,0
S5H3.0
501P.O
5590,0
5125.0
5205,0
5405,0
5705,0
3820,0
3820.0
4108,0
4144.0
4256.0
4490.0
4431,0
4521.0
4586.0
4626.0
4716.0
4759.0
4627.0
4716,0
4753.0
4*93.0
3820,0
3^20.0
456R.O
4778,0
5433.0
5340,0
5570,0
5180,0
5070,0
4874,0
ST.
KT MT Mr MTMT MT MTMT MT
MT MTMT MT
MT MT MTMTMT MTHI MT
MT MT MT MT MT MT MT MT MT MT MT MT MT MT MT MT MT MTMX MT
DBS El
- VfcD
GRAVITY
9*0460.95
9B047b,97
9yo4
fc!.
'.«b
9B04
9'i.
i!l
9805U5J ,73
930505.73
9 fe 0 4 6
» . 7
09&<M4J,76
9bOA37.92
9PO'
3b*'
."4t
f
9*043 « .
74
9 3 0 4 b 2
. 7
19R045<).13
98044 i>
. 60
98043 U. 13
9805UJ>,73
9 *
(,) 5 o b
, 7 3
9804W1.82
9»047«.9l
980469.69
980455.53
980458,14
9 S 04
50 ,56
9R044f ,99
9b044b,74
98044] .34
9^043 <;,*!
930 4 40.55
980432.67
980427.52
9ri0420.0b
9R0505.73
9« 0505, 73
9*»C
46*'
,07
9804&3.23
9P0413.17
9»04
1<'.
31980*10.73
980433.93
980439.25
98044* .77
COlrtBECTJCJNS
STD. GPV,
TERRAIN
FREE-AIR
-980898,82
-9d0896.87
-9SO
!s9&
.b4
-980895.22
-9B0915.56
-9bc
>9l4
.43
-9d09l3.47
-9*U>9l0.bb
-9b0906,63
-960909,45
-9&091 1
,b2
-980915.92
-9*0915.33
-9ti
0870
.45
-9HO
b"/0
. 10
-9U0871.35
-980
fi73
,90
-9«0b73.y4
-9H0873.94
-9tfOiJ74.56
-980876.27
-980877.35
-980S7U.68
«9bOb7l.b3
-980870,69
-98 (j
g69,3B
-9808^9.41
-980H90.16
980891.75
-980d91.05
-980892. bb
-980894, OB
-9H0895.il
-980694.50
-980893,31
1.18
0.63
0.56
0,42
0.00
0.00
3.76
3.86
3,b5
4.44
4.41
4.^6
4.27
4.03
3.92
o.oo
0,00
0.11
0.14
0.21
0.39
0.52
0,70
O.R7
1.02
1.03
1.03
0.74
O.b7
O.b6
1.21
0,00
0,00
0,62
0,94
5.19
2.77
2,93
2.72
1.45
1.11
449,35
431,78
429,24
412.23
4*2,90
502,45
524.
'bl
471,72
525.47
4bl .7
7489.29
5 0 b
, 0
tf53
i>,2
7
386.20
3i59.bB
400,11
422,10
41b,56
425,02
431.12
434.86
443.34
447.
38
434,98
463.34
4*b.b2
459.96
429.43
449.16
510.72
501.98
523.59
486,94
476.61
45b,l9
bOUGUER
-164,41
-15B.01
-157,09
-150,89
-176.63
-183.75
-191,89
-172.56
-192.13
-176.22
-17b.96
-Ibb.aO
-196, 06
-141,39
-142,63
-140,^6
-154,48
-152,46
-155,54
-157,77
-159,14
-162.22
-163,70
-159.18
-162.22
-163.49
-16H.28
-157,16
-164,35
-Ib6,76
-Ib3.5d
191.44
17b.ll
-174,34
-167,63
BO
UG
UtK
SP
EC
IAL
SPE
CFI
EI
-15
1.7
5
"145,5
0-1
43
,25
-140,2
5
-14
3.8
3
-I3b.7
b-1
37.b
O
-132.1
4-1
30
,53
-13*.0
9-1
44.0
1-1
41,0
7
-143,7
1-1
4&
.10
-147,b
O
-15
0.3
6-1
51
.la
-15
3,2
0
"15
3.3
5-1
53
.77
-154.1
0-1
5^.7
-4-I
5b.b
3-1
57
.07
-15
0.4
2
14
9.2
01
52
.77
-15
7,3
7-1
4e.2
7-1
49,
o3-1
51
.53
-15
2.&
7
11
BOUGUER GRAVITY DATA
PACK
(JH
OTE
AU
-EA
ST
GL
AC
IER
CORRE.C1ION5
STATION
IDENTIFICATION
GRAVTY,
CH249
GRA'VTY, BELLBASE
GRftVTy, BELLBASE
GRaVTY.
CH250
GRAVTY.
CH251
GRRVTY,
GP6.VTY.
GRAV
TY.
GR?,
VTY,
f 3 »
V T V
Gr* A
i I
.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
GRAVTY.
CH252
CH253
CH254
CH255
CH256
CK257
CH258
CH259
CH260
CH261
LATITUDE
48
1,51
48
48 48
48
48
47
48 48
48
48
48
48
5.40
3.56
3.12
1.88
0,54
59,64
3,33
4,06
3,81
4,74
5.35
5.64
LOCA
TION
' LONGITUDE
112 40.06
11
2 -112
-112
-112
-112
-112
-112
-112
-112
-112
-112
112
26,17
24,23
28,44
28, Rl
2R.&3
35, PO
44,35
43.43
44,32
43,27
43,95
42.65
ELEV.
5018,0
3820,0
3820.0
4220,0
4536,0
4390.0
4270,0
4 2 9 8
, 0
4n54,0
5950,0
5100,0
5310,0
5022,0
5070,0
4824.0
ST.
MT
MT MT
MT
MT MT
MT
MT
HT
MT MT MT MT
MT
MT
QncjTHVrl/
^, -
- -
- ~ -
-
GRAVITY
STD. Ci
HV,
TKKRAIN
FHLE-AIH
980438,97 -980892.41
1.42
471.72
930505.73
°'?°
980505,73
9K05C6.17 -080896.25
9804*1. 4i
-9WU&95.49
9S04*2.2« -980894. b3
g<*MC9,38 -980B92.97
980*96.33 -960890.96
c)f)o4c>0.52 -9
bOfl
h9,b
O 9ti03yV,72 -9bUp95,14
960440.40 -9
a099
t>,2
4 98042V. ,1
0 -9b089b.b6
9H044b.'»>2
-9d0897.26
9804^4.42 -980BV«,17
980458,3d -98089b.t>l
0,UU
0,37
0,51
0,38
O.*l
0,32
0,83
4,36
2,78
5.54
2.22
2.26
1.58
39^.73
426,42
412,70
401 .43
404,06
437,51
559.29
479.42
499.16
472,10
4 7
to , 6
1453,49
BOUGUER
-172,56
-145,23
-156,06
151,06
146.94
-1*7,90
-IbO.lO
-204,43
-175,37
-1*2,55
172.70
-174,34
-165,92
SPECIAL
GR
AV
TY
.BE
LL
BA
SE
3820.0
MT
980505,73
14
0,2
1 1
33
,21
14
U.5
3 1
38.0
9 1
38,1
5
SPfc
l
-14
9,0
1-1
4-*
,61
-149,
*2
12
References
Defense Mapping Agency Aerospace Center, 1974, World Relative Gravity Reference
Network, North America, Part 2: DMAAC Ref. Pub. No. 25, with supplement
updating gravity values to the International Gravity Standardization Net
1971, 1635 p.
Hammer, Sigmund, 1939, Terrain corrections for gravimeter stations, Geophysics,
v. 4, no. 3, p. 184-194.
International Association of Geodesy, 1967, Geodetic Reference System, 1967,
International Association of Geodesy Spec. Pub. no. 3, 74 p.
13
