UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL …pubs.usgs.gov/of/1988/0602/report.pdf · 2010. 11. 7. · UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Principal

UNITED STATES DEPARTMENT OF THE INTERIOR

GEOLOGICAL SURVEY

Principal Facts for New Gravity Stations

in the area of the Richmond Early Mesozoic basin, Virginia

David L. Daniels (1) and Ali A. Nowroozi (2)

Open-File Report 88-602

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Use of trade names is for descriptive purposes only and does not imply endorsement by the USGS.

1 U.S. Geological Survey, Reston, Virginia2 Department of Geological Sciences,' Old Dominion University, Norfolk, Virginia

1988

TABLE OF CONTENTS

Introduction.................................................1Data collection.............................................. 1Elevation and location control...............................4Data reduction...............................................4Acknowledgements............................................. 4References................................................... 5Appendix A: Description of gravity base......................6Appendix B: Principal facts of gravity stations..............6

Explanation of headings...................... 6Principal facts..............................7

LIST OF ILLUSTRATIONS

Figure 1 Location of the study area.........................2Figure 2 Location of gravi ty profiles....................... 3

LIST OF TABLES

Table 1 Observed gravity at reference stations..............!

Introduction

This report presents some of the results of a study done under contract to the U.S. Geological Survey (USGS) by A.A. Nowroozi of Old Dominion University at Norfolk, Virginia. The work was undertaken to support the objectives of the Early Mesozoic Basins Project under the auspices of the USGS Strategic and Critical Minerals Program and the Geologic Framework and Synthesis Program.

During 1984-1985, 830 new gravity stations were acquired in profile form along local Virginia roads across the Richmond early Mesozoic basin near Richmond, Virginia (Figure 1). Thirteen profiles were completed in this study, of which four cross the width of the basin (Virginia routes 708, 602, 604, 711, Figure 2). The average spacing between stations is about 100 m. These profiles were intended to complement previous gravity surveys in the region of the Richmond basin completed by the Virginia Division of Mineral Resources (VDMR) (Johnson, 1973, 1975; Johnson and others, 1985). The new profiles reported here are along many of the roads crossing the Richmond basin not covered by the VDMR surveys in order to permit modelling of various structural features of the basin. This report presents the principal facts for these measurements.

Data collection

Gravity observations were made using LaCoste-Romberg gravity meter G-289. All gravity stations were referenced to a base station at Chesterfield, Virginia (see Appendix A), one of a net of 58 base stations in Virginia established by Johnson and Ziegler (1972). The gravity survey in this study was accomplished by loops which were started and closed daily with repeat observations at the Chesterfield base. The stations of the Virginia base net, including the base at Chesterfield, were tied to base stations WASHINGTON R at Dulles International airport near Washington, DC and RALEIGH K at Raleigh-Durham airport in North Carolina. These ties were carried out prior to the establishment of the International Gravity Standardization Net (IGSN71) and consequently the observed gravity values for the Virginia net (Johnson and Ziegler, 1972) were based upon the datum of the U.S. National Gravity Base Net (USNGBN). The difference between UDNGBN (Johnson and Ziegler, 1972) and IGSN71 (Morelli, 1971) datums at base WASHINGTON R is -13.71 mGals (Table 1). Base CHESTERFIELD was therefore adjusted downward by 13.71 mGals to bring it into conformity with IGSN71.

Table 1 Observed gravity (mGals) at reference stations

BASE USNGBN IGSN71 Difference

WASHINGTON R 980092.16 (1) 980078.45 (2) 13.71 CHESTERFIELD 979929.27 (1) 979915.56 13.71

(1) Johnson and Ziegler (1972)(2) Morelli (1971)

39'

37

\. J

Page 2

83° 82° 81° 80° 79° 78° 77° 76

/-'

STUDY AREA

VIRGINIA

V f /vssr / /* *'

4- +

'T -

39'

38

37

83° 82° 81° 80° 79° 78° 77° 76

Figure 1 Index map showing the location of the study area.

Page 3

77°52'30 77°45 e 0" 77°37'30"

37 Q 37'30

37°30 8 0 4-

37°22 B 30

37°15° 0

37° 7'30" bb

77°30' 0"

37°45' 0"

602

-f

604

CHE9TERFIELD#}37°22 e 30'

.708

10 km

37°37'30

0"

437°15' 0"

7'30

Figure 2 Index map showing the locations of the gravity profiles acquired in this study (heavy lines). The profiles are numbered with the state route numbers. The outline of the Richmond basin was digitized from Johnson and others (1985).

Page 4

Elevation and Location Control

The elevation of the stations was determined by transit and leveling rod, in most cases beginning and ending on a National Geodetic Survey or USGS benchmark with established vertical control. The uncertainty of the determined elevations is estimated to be +0.25 feet based on closure errors. At a density of 2.67 g/cc, these elevation uncertainties translate to uncertainties in the Bouguer anomaly value of about +0.02 mGals.

Station positions were plotted on USGS 7.5 minute topographic maps with an estimated accuracy of + 25 m. Station latitudes and longitudes were then scaled from the topographic maps.

Data Reduction

Program GRAVAS on the computer system at Old Dominion University was used to reduce gravity meter-readings to observed-gravity values by calculating and correcting for earth-tide and linear meter-drift. Computer programs existing on the USGS Digital Equipment Corporation VAX 11/780 computer system at Reston, Virginia were used to reduce the data to Bouguer anomalies and to obtain a listing of the principal facts. Terrain corrections were computed using program BOUGUER by R.H. Godson (USGS unpub. program, 1978), which corrects for the gravity effects of terrain at each station out to a radius 166.7 km using the method of Plouff (1977). Godson's program also calculates earth-curvature corrections and complete (terrain-corrected) Bouguer gravity anomaly values. These computed terrain corrections use mean-elevation data digitized on a 30-second grid for corrections from 0.895 to 5 km, 1-minute terrain data for corrections from 5 to 21 km, and 3-minute terrain data for corrections from 21 to 166.7 km. No correction was made for the region from the station out to a radius of 0.895 km because this is approximately the limit of resolution of the digital terrain values at this latitude. As the terrain is generally flat in the region, little error should be introduced by this omission. A density of 2.67 g/cc was used to calculate terrain corrections, giving the corrections and gravity anomaly values listed in Appendix B. The theoretical gravity value was calculated using the 1967 formula of the Geodetic Reference System (International Association of Geodesy, 1967). Mathematical equations are given in Cordell and others (1982). Errors in the estimation of terrain corrections give rise to the greatest uncertainty in Bouguer values. Computer-generated terrain corrections in mountainous areas are generally accurate to within 1 mgal.

Acknowledgements

We thank Stanley S. Johnson (VDMR) for the use of program GRAVAS and for information regarding VDMR work in the study area.

Page 5

REFERENCES

Cordell, Lindrith, Keller, G.R., and Hildenbrand, T.G., 1982, Bouguer gravity map of the Rio Grande Rift, Colorado, New Mexico, and Texas: U. S. Geological Survey Geophysical Investigations Series, Map GP- 949, scale 1:1,000,000.

International Association of Geodesy, 1967, Geodetic Reference System, 1967: International Association of Geodesy Special Publication No. 3, 116 p.

Johnson, S.S., 1973, Bouguer gravity, northeastern Virginia and the eastern shore Peninsula: Virginia Division of Mineral Resources Report of Investigations 32, 48 p.

Johnson, S.S., 1975, Bouguer gravity in southeastern Virginia: Virginia Division of Mineral Resources Report of Investigations 39, 42 p.

Johnson, S.S., and Ziegler, R.E., 1972, Virginia gravity base net:Virginia Division of Mineral Resources Information Circular 17, 22 p.

Johnson, S.S., Wilkes, G.P., and Gwin, M.R., 1985, Simple Bouguer gravity anomaly map of the Richmond and Taylorsville basins and vicinity, Virginia: Virginia Division of Mineral Resources Publication 53, scale 1:125,000.

Morelli, C., 1971, The International Gravity Standardization Net, 1971: International Association of Geodesy Special Publication 4, 194 p.

Plouff, Donald, 1977, Preliminary documentation for a FORTRAN program to compute gravity terrain corrections based on topography digitized on a geographic grid: U.S. Geological Survey Open-File Report 77-535.

Page 6

APPENDIX A: DESCRIPTION OF GRAVITY BASE

Base name: CHESTERFIELDLocation: Chesterfield, Chesterfield County, VirginiaObserved gravity (IGSN71): 979915.56 mGals

Latitude: Longitude:

D M S 37 22 34 N 77 30 25 V

Elevation: 209.652 ft Date established: 4/5/71

Description (from Johnson and Ziegler, 1972):

At "Chesterfield County Courthouse, about 0.1 mile east along State Highway 10 from its intersection with State Road 655 in Chesterfield, about 80 feet east of the SE corner of the courthouse, over BM in concrete base of the Soldiers Monument, about 5 feet south of the south face." Bench mark (BM) is designated R 245 1942.

APPENDIX B: PRINCIPAL FACTS OF GRAVITY STATIONS

Explanation of Headings;

STATION ID

LOCATIONS; LATITUDE LONGITUDE ELEV

OBSERVED GRAVITY

CORRECTIONS; TERRAIN

CURV

ANOMALIES: FREE AIR COMPLETE BOUGUER

Gravity station identification number. The first three digits give the Virginia highway route number.

North latitude in degrees, decimal minutes West longitude in degrees, decimal minutes Station elevation in feet

Observed gravity in milligals

Terrain correction from 0.895 to 166.7 kmradius, in milligalsCurvature correction in milligals

Free-air anomaly in milligalsComplete Bouguer anomaly in milligals fordensity 2.67 gm/cc.

Richmond Basin gravity profiles

;> i/ii J.

ID

708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-708-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-

LATITUDE

272625242322212019181716151413121110987654321

X2X3X4X5X6X7949392919089888786858483828180797877767574737271706968

deg

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

min

14.3314.3314.3514.3714.3714.3714.3514.3314.3314.3314.3514.3514.3514.3714.3714.3714.3714.3814.3814.3814.4014.4014.4214.4314.4514.4814.5214.5514.5814.6314.6814.7214.7719.1319.1719.2019.2219.2319.2219.2319.2319.2519.2519.2319.2319.2319.2319.2319.2319.2319.2019.1719.1219.0519.0218.9818.9318.9218.9018.88

LONGITUDEdeg min

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

46.3346.2646.1446.0445.9645.8445.7645.7045.6345.5445.4645.3945.3145.2545.1645.0844.9644.9144.8344.7644.6844.6144.5444.4644.3944.3344.2844.2144.1444.1144.0644.0143.9649.4949.4549.3849.3149.2549.1649.0949.0348.9648.8948.8148.7448.6648.6148.5348.4548.3848.3148.2348.1648.1348.0648.0147.9347.8647.8047.71

ELEV(in ft)

191.6193.7204.2206.3212.1235.9239.3250.8249.7231.8225.6221.9213.6204.4192.4187.6182.8187.3194.5201.8208.5217.2222.5214.2219.4225.4223.9229.3224.8226.8234.0237.3243.1291.2283.7277.9280.3288.2282.2277.1270.8271.8265.5255.1245.9230.9221.4211.9200.1186.3185.3186.8186.5188.5204.7216.5238.9234.5234.2251.9

GRAVITY TERRAIN(mgals)

979930.65979930.90979930.72979931.10979931.10979929.97979929.79979928.90979930.40979930.90979930.72979930.47979930.90979931.65979930.97979931.35979931.35979930.90979930.54979930.10979929.72979928.79979928.54979928.40979928.54979928.15979927.97979927.97979928.72979929.22979929.79979929.90979929.90979927.90979928.10979928.35979928.04979927.40979927.54979927.97979928.54979928.35979928.79979929.65979930.04979930.85979931.40979931.79979932.54979932.97979932.90979932.54979931.79979932.35979931.10979930.10979928.22979928.85979928.79979927.22

(dens=2

-0.03-0.03-0.03-0.03-0.03-0.02-0.01-0.01-0.01-0.02-0.02-0.02-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.02-0.02-0.03-0.02-0.02-0.02-0.02-0.02-0.02-0.01-0.01-0.010.030.020.010.020.030.020.010.010.010.00

-0.01-0.02-0.03-0.03-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.02-0.03-0.03-0.01

CURV.67)

-0.08-0.09-0.09-0.09-0.09-0.10-0.10-0.11-0.11-0.10-0.10-0.10-0.09-0.09-0.08-0.08-0.08-0.08-0.09-0.09-0.09-0.10-0.10-0.09-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.11-0.13-0.12-0.12-0.12-0.13-0.12-0.12-0.12-0.12-0.12-0.11-0.11-0.10-0.10-0.09-0.09-0.08-0.08-0.08-0.08-0.08-0.09-0.10-0.10-0.10-0.10-0.11

FREEAIR

23.1223.5624.3324.8825.4326.5326.7126.9328.3327.1426.3525.7525.4025.2623.4423.3722.9222.8823.2023.4523.6723.5623.7822.8423.4423.5723.1923.6623.9424.5625.7326.1026.5722.7622.2021.8521.7521.8321.4221.3621.3321.2121.0620.9720.4919.8919.5519.0418.6817.8217.6917.5216.8117.6617.9818.1418.4618.6818.6218.75

COMPLETEBOUGUER

16.4716.8417.2517.7318.0718.3718.4318.2619.6919.1118.5318.0717.9918.1616.7716.8616.5716.3816.4516.4516.4416.0416.0715.4115.8415.7715.4415.7216.1616.7017.6417.8918.1612.7312.4212.2612.0911.9111.6911.8011.9911.8311.8912.1511.9811.8811.8711.6811.7311.3411.2511.0310.3311.1110.8710.6310.1810.5410.5010.04


bUTAXJ.1

ID

602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-602-

ww -

LATITUDE

6766656463626160595857565554535251504948474645444342414039383736353433323130292827262524232221201918171615141312111098

deg

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

min

18.8718.8518.8718.8718.8718.8318.8518.8518.8718.8818.9218.9518.9718.9819.0219.0319.0719.1219.1319.1519.1719.1719.1819.1819.1819.1819.1819.2019.2219.2019.2019.2019.2219.2219.2319.2319.2319.2319.2519.2719.2819.3219.3519.3819.4219.4519.4719.4819.4819.4819.5019.5219.5519.5719.5819.6219.6319.6719.7019.72

iAA-«.i j.uno LONGITUDEdeg

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

47.6447.5747.4947.4547.3647.3147.2147.1447.0647.0046.9646.9146.8346.7846.7146.6346.5646.4646.4346.3646.2946.2546.1646.0946.0345.9445.8945.8345.7845.7145.6145.5745.5145.4345.3645.3145.2345.1645.0945.0344.9844.9144.8644.8144.7644.7344.6644.5944.5444.4844.4144.3644.2944.2344.1644.1144.0443.9843.9343.86

ELEV(in ft)

254.7254.1264.3266.8274.4267.0269.5261.9260.1284.6308.7310.4316.2315.9322.8330.0341.7348.5349.0348.0345.2340.8336.2330.9325.8319.5314.6308.6304.3306.5303.5308.3310.1309.7303.7298.4291.3291.2284.7296.2300.5305.0312.7308.9303.2296.7291.0280.2273.8267.0260.1252.5243.0236.1229.8224.9218.9213.6208.0202.5

IU3£>JVK.V.E.U V-VKlUiV-U. JLVnii

GRAVITY TERRAIN CURV(mgals)

979926.79979926.54979925.79979925.60979924.79979925.22979924.90979925.47979925.35979923.72979922.15979922.10979921.47979921.47979921.04979920.40979919.54979919.22979919.10979919.10979919.15979919.54979919.79979920.15979920.40979920.90979921.10979921.60979921.97979921.85979922.22979921.72979921.60979921.54979921.97979922.35979922.85979923.04979923.54979922.85979922.65979922.65979922.15979922.54979923.04979923.35979924.22979925.04979925.72979926.40979927.04979927.85979928.65979929.40979930.10979930.72979931.29979931.85979932.54979933.22

(dens=2

-0.01-0.010.000.000.010.000.00

-0.01-0.010.010.040.040.050.050.060.060.080.090.090.090.080.070.060.060.050.040.030.030.020.020.020.030.030.030.020.020.010.010.010.020.030.030.040.040.030.030.020.010.000.00

-0.01-0.01-0.02-0.02-0.02-0.02-0.03-0.03-0.03-0.03

.67)

-0.11-0.11-0.12-0.12-0.12-0.12-0.12-0.11-0.11-0.12-0.13-0.14-0.14-0.14-0.14-0.14-0.15-0.15-0.15-0.15-0.15-0.15-0.15-0.14-0.14-0.14-0.14-0.13-0.13-0.13-0.13-0.13-0.14-0.14-0.13-0.13-0.13-0.13-0.12-0.13-0.13-0.13-0.14-0.13-0.13-0.13-0.13-0.12-0.12-0.12-0.11-0.11-0.11-0.10-0.10-0.10-0.10-0.09-0.09-0.09

FREEAIR

18.5918.3118.5018.5418.4518.2418.1217.9817.6718.3218.9619.0318.9118.8719.0419.0519.2419.4819.3919.2719.0319.0118.8118.6718.4418.3518.0817.9917.9418.0418.1318.0918.1118.0117.8617.7417.5717.7517.6117.9718.1618.5318.7018.7018.6018.2618.5618.3518.4318.4718.4418.5118.3618.4418.5318.6218.6118.6318.7518.88

COMPLETEBOUGUER

9.799.529.379.338.989.018.818.928.678.508.338.348.048.007.947.717.527.547.437.347.187.307.267.307.237.357.257.367.447.487.677.477.437.347.397.457.527.707.787.767.818.037.948.078.168.048.538.688.979.259.449.779.95

10.2710.5710.8411.0211.2211.5311.85


AXH.XJ.VJIM

ID LATITUDEdeg min

602- 7602- 6602- 5602- 4602- 3602- 2602- 1602- X2602- X3602- X4602- X5604- 132604- 131604- 130604- 129604- 128604- 127604- 126604- 125604- 124604- 123604- 122604- 121604- 120604- 118604- 117604- 116604- 115604- 114604- 113604- 112604- 111604- 110604- 109604- 108604- 107604- 106604- 105604- 104604- 103604- 102604- 101604- 100604- 99604- 98604- 97604- 96604- 95604- 94604- 93604- 92604- 91604- 90604- 89604- 88604- 87604- 86604- 85604- 84604- 83

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

19.7519.7819.8019.8219.8219.8019.8019.8219.8019.8019.7827.9827.9827.9727.9727.9327.9027.8727.8027.7827.7827.7327.6827.6327.5727.5527.5227.4827.4727.4527.4227.4027.4027.4327.4227.4027.4327.4527.4227.4027.3827.3727.3327.3227.3027.2827.2527.2327.2027.1827.1827.2027.2227.2027.2227.2227.2027.1727.1727.15

LONGITUDEdeg min

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

43.8143.7643.7143.6143.5743.5143.4343.3143.2543.1843.1147.2547.1647.0947.0446.9646.9146.8846.8346.8046.7146.6646.6346.6146.4646.3846.3146.2646.2146.0946.0045.9145.8445.7845.7045.6145.5345.4645.3945.3345.2645.1845.0945.0444.9844.9144.8344.7644.7044.6144.5444.4644.3644.2844.2144.1144.0343.9643.8843.81

ELEV(in ft)

198.7195.4194.1194.3195.5199.3204.0220.4222.4224.0233.8340.5344.7338.5339.1337.0332.0326.9325.2326.2330.0325.4321.9319.8320.4307.8305.3292.2287.2282.0296.3313.9320.1317.4318.3318.6316.0322.9319.3319.2313.3293.9286.4286.2284.2280.0276.8278.0283.0278.7280.4277.9284.4276.1279.0279.0272.9270.2272.7274.6

vjOAbrwciU \-wruvci\-j. j. WHO

GRAVITY TERRAIN CURV(mgals)

979933979934979934979935979935979936979936979935979935979935979934979937979936

.72

.22

.72

.15

.72

.29

.65

.65

.90

.60

.97

.60

.85979937.35979936979936979937979937979936979936979935979935979935979935979934979934979933979935979935979936979934979933979932979932979932979932979932979931979931979931979931979932979933979932979932979933979933979932979932979932979932979932979931979932979931979931979932979932979931979931

.85

.79

.04

.04

.97

.60

.97

.97

.85

.90

.72

.90

.97

.35

.85

.04

.79

.35

.90

.65

.65

.29

.47

.97

.97

.79

.90

.90

.10

.90

.97

.15

.15

.90

.40

.65

.35

.47

.97

.22

.85

.72

.04

.10

.72

.54

(dens=2.67)

-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.02-0.02-0.020.020.020.020.020.020.010.010.010.010.010.010.010.000.010.000.00

-0.01-0.01-0.02-0.010.000.010.010.010.010.010.020.020.020.010.00

-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.010.000.000.000.000.000.000.000.00

-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.10-0.10-0.10-0.10-0.15-0.15-0.15-0.15-0.15-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.13-0.13-0.13-0.13-0.12-0.13-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.13-0.13-0.13-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12

**« WI7JXUJ J.C*O

FREE COMPLETEAIR BOUGUER

18.9819.1219.4719.8920.5721.5322.3422.8523.3223.1723.4924.2223.8723.8023.3623.1722.9922.5522.4222.1821.9021.5421.1621.0920.0619.0717.9618.1618.2017.9418.0818.3218.4517.9018.0117.7017.5917.7117.4317.2616.8416.0315.5815.3815.3015.1114.8514.7414.7514.6314.4814.3514.4313.9313.8013.6713.4513.3013.1513.18

12.0812.3412.7413.1513.7914.6215.2615.2115.6115.4115.3912.4811.9812.1311.6711.5511.5311.2711.2010.9210.5110.3110.0510.059.008.447.418.058.278.177.847.487.406.957.026.716.696.586.426.256.035.885.685.485.475.435.285.134.974.994.794.744.614.394.164.034.023.963.733.69


SXA.XJ.UH

ID

604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-604-

828180797877767574737271706968676665646362616059585756555453525150494847464544434241403938373635343332313029282726252423

LATITUDEdeg

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

min

27.1527.1327.1027.0727.0527.0227.0026.9826.9726.9826.9726.9726.9526.9326.9026.8826.8726.8526.8326.8026.7826.7726.7326.7226.6826.6526.6326.6226.6026.5826.5526.5326.5226.5026.5026.5026.5226.5226.5326.5326.5326.5526.5526.5726.5726.5826.5826.5826.5826.5826.6026.6026.6026.6026.6226.6526.7026.7526.7826.80

LONGITUDEdeg

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

43.7343.6643.6143.5443.4943.4143.3343.2643.2143.1343.0443.0042.9342.8842.8142.7642.7042.6342.5642.5142.4642.4142.3642.3142.2842.2342.1842.1142.0341.9641.8941.8341.7841.7141.6441.5941.5341.4841.4141.3341.2641.2041.1341.0841.0040.9440.8840.8140.7440.6640.5640.4940.3940.3340.2840.2140.1640.1140.0639.98

ELEV(in ft)

274.4275.2271.4273.0270.6267.8265.5279.1270.1265.8271.0279.3292.0300.3295.5291.4282.0282.1277.0263.3259.1249.0245.9248.0245.3238.7235.9231.9226.0224.1223.4216.4208.4197.5183.9181.6181.7182.3181.2181.5183.4190.9192.1182.5181.6188.8185.5182.1181.3181.5181.8181.7181.4189.5208.6222.1234.1241.6238.1238.4

UJ32XIUW.ILU -I~lUlKCiI~JL


979931.29979931.29979931.29979931.10979931.15979931.04979931.10979930.60979930.35979930.65979930.15979929.65979928.72979927.97979928.29979928.47979928.72979928.85979929.15979929.85979930.10979930.54979930.72979930.40979930.22979930.65979930.65979930.85979931.79979931.85979932.04979932.54979932.97979933.85979934.90979935.29979934.79979934.60979934.65979934.65979934.40979933.97979933.90979934.60979934.54979934.10979934.15979934.54979934.40979934.35979934.22979934.15979934.22979933.72979932.54979931.54979930.79979930.22979930.60979930.60

(dens=2

0.000.000.000.000.000.000.000.010.000.000.010.020.030.040.040.030.020.020.010.000.00

-0.01-0.01-0.01-0.01-0.02-0.02-0.02-0.03-0.03-0.03-0.03-0.03-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.03-0.02-0.02-0.01-0.01-0.01

CURV.67)

-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.13-0.13-0.13-0.13-0.12-0.12-0.12-0.12-0.11-0.11-0.11-0.11-0.11-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.09-0.09-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.09-0.10-0.10-0.11-0.10-0.10

FREEAIR

12.9113.0212.7012.7012.5612.2212.1012.9111.8311.7111.7111.9812.2812.3512.2512.0811.4611.6311.4910.9310.8210.3210.2710.169.799.649.419.249.659.579.739.619.299.188.959.128.608.478.408.438.368.618.668.428.278.508.238.308.098.067.927.857.898.158.758.979.289.339.349.34

COMPLETEBOUGUER

3.433.513.323.273.212.972.933.282.502.532.362.362.222.012.082.041.741.911.931.841.871.711.771.591.301.371.241.211.811.801.992.102.062.322.562.812.282.132.102.121.981.971.982.081.961.931.781.971.781.751.601.531.581.571.511.271.170.981.111.10

10


i> J.A.L J.WW

ID LATITUDEdeg min

604- 22604- 21604- 20604- 19604- 18604- 17604- 16604- 15604- 14604- 13604- 12604- 11604- 10604- 9604- 8604- 7604- 6604- 5604- 4604- 3604- 2604- 1604- X2604- X3604- X4604- X5604- X6604- X7604- X8604- X9604- X10604- Xll604- X12604- X13604- X14604- X15711- 1711- 2711- 3711- 4711- 5711- 6711- 7711- 8711- 9711- 10711- 11711- 12711- 13711- 14711- 15711- 16711- 17711- 18711- 19711- 20711- 21711- 22711- 23711- 24

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

26.8326.8726.9026.9326.9526.9827.0227.0527.0527.0527.0327.0227.0227.0026.9826.9826.9826.9726.9726.9827.0027.0027.0027.0026.9826.9826.9726.9827.0027.0227.0327.0327.0327.0227.0026.9735.1335.0835.0535.0335.0034.9734.9334.9034.8834.8534.8234.8034.7734.7334.7034.7034.7034.7034.7034.7234.7234.7234.7034.67

LONGITUDEdeg min

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

39.9339.8639.8139.7439.6839.6339.5639.5039.4539.3639.2939.2339.1639.1139.0538.9838.9138.8438.7638.7038.6338.5438.4838.4338.3838.3138.2638.2038.1338.0638.0037.9537.8437.7837.7337.6444.9444.9144.8444.8044.7344.6644.5944.5444.4844.4344.3844.3144.2644.2144.1444.0844.0043.9343.8443.7843.7143.6443.5743.53

ELEV(in ft)

249.4253.5255.1255.2250.2239.8236.3241.1243.4236.4234.5227.6236.7246.8259.9262.3271.1267.1265.9264.8263.2265.5260.2273.2286.5284.9280.4272.2271.0273.5274.2273.0287.6286.5290.3282.0251.0242.2228.0223.5216.3210.3202.5197.5192.9189.2186.9184.3181.2178.5174.7170.6163.9155.3147.6150.4159.1182.2205.1213.2


979929979929979928979928979928979929979929979929979928979928979929979929979929979928979927979927979926979927979927979928979928979928979928979927979926979926979926979927979927979927979927979927979925979925979925979925979960979960979961979960979960979961979961979961979961979961979961979961979961979961979961979961979961979962979962979962979961979960979957979957

.65

.15

.79

.47

.54

.35

.40

.15

.60

.85

.04

.54

.15

.40

.65

.54

.90

.29

.35

.22

.85

.60

.85

.90

.60

.65

.85

.35

.35

.29

.04

.04

.97

.90

.79

.97

.35

.35

.22

.97

.90

.15

.15

.35

.15

.10

.10

.04

.22

.29

.29

.54

.79

.40

.47

.35

.72

.04

.97

.04

CURV(dens=2.67)

-0.010.000.000.00

-0.01-0.01-0.02-0.01-0.01-0.02-0.02-0.02-0.01-0.010.000.000.010.010.010.010.010.010.010.020.040.040.030.020.020.020.020.020.040.040.050.04

-0.02-0.03-0.04-0.04-0.04-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.04

-0.11-0.11-0.11-0.11-0.11-0.11-0.10-0.11-0.11-0.10-0.10-0.10-0.10-0.11-0.11-0.11-0.12-0.12-0.12-0.12-0.12-0.12-0.11-0.12-0.13-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.13-0.13-0.13-0.12-0.11-0.11-0.10-0.10-0.09-0.09-0.09-0.09-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.07-0.07-0.07-0.07-0.07-0.08-0.09-0.09

~ Mmni-mi. I f.^»


9.389.218.958.608.177.967.637.797.457.047.086.957.417.658.168.278.468.488.429.189.649.609.359.629.619.519.309.018.879.018.828.709.008.859.138.56

28.1527.3926.9726.3425.6225.3524.6824.4623.8523.5023.3323.0522.9822.8622.5422.4022.0221.8221.1721.2821.4721.9622.0821.95

0.760.450.14

-0.21-0.48-0.33-0.56-0.55-0.97-1.14-1.04-0.94-0.77-0.89-0.82-0.79-0.89-0.73-0.750.040.560.440.370.21-0.25-0.29-0.36-0.37-0.47-0.42-0.64-0.71-0.89-1.01-0.85-1.1419.4618.9919.0618.5718.1118.0417.6317.5817.1416.9116.8216.6316.6716.6416.4516.4616.3116.4116.0216.0315.9215.6214.9414.55

11


£> XK.1. J.IW

ID LATITUDEdeg min

711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-

252627282930313233343536373839404142434445464748495052535455565758596061626364656667686970717273747576777879808182838485

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

34.6334.6034.5734.5334.5034.4534.4234.3734.3334.2834.2534.2234.1734.1334.0834.0534.0033.9733.9333.9033.8533.8333.8333.8233.7833.7533.7233.7033.6733.6333.6033.5833.5833.5733.5533.5533.5333.5333.5233.5033.5033.4833.4733.4733.4533.4333.4233.3833.3733.3333.3033.2833.2833.2733.2733.2733.2533.2533.2333.22

LONGITUDEdeg

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

43.4843.4543.3843.3343.2843.2143.1443.0943.0443.0042.9442.8842.8342.7842.7142.6642.6142.5342.5142.4642.4142.3442.2642.2042.0842.0341.9141.8341.7641.7141.6641.5941.5141.4541.3641.2941.2141.1341.0340.9440.8840.8040.7440.7040.6340.6040.5640.5140.4840.4340.3440.2840.2040.1340.0539.9639.8939.8339.7839.73

ELEV(in ft)

210.6206.2212.6211.0211.6215.5221.0218.7212.8211.1215.3217.7219.8220.6229.4233.6236.2232.5232.5234.1233.7228.5228.1227.3222.8215.4217.9221.9224.9220.8219.3213.9211.6210.2207.6202.3198.1195.2192.5191.6191.1190.4192.0185.5173.7151.7139.5132.6131.8135.0147.8144.9151.4154.0154.9151.4149.1150.3151.5155.5


979957.22979957.22979956.47979956.97979956.04979955.54979954.90979954.72979954.54979954.60979953.90979953.72979953.10979952.40979951.60979951.15979950.72979950.60979950.54979950.10979949.85979949.97979949.79979949.35979949.47979949.60979948.90979948.35979947.85979948.04979947.97979947.90979947.85979947.72979947.47979947.60979947.65979947.65979947.60979947.47979947.35979947.04979946.90979946.79979947.60979948.85979949.35979949.22979949.29979949.10979947.79979948.15979947.60979947.35979947.15979947.22979947.22979947.10979946.60979946.54

(dens=2

-0.04-0.05-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.04-0.04-0.04-0.04-0.03-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.04-0.05-0.05-0.04-0.04-0.04-0.04-0.04-0.04-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03

CURV.67)

-0.09-0.09-0.09-0.09-0.09-0.09-0.10-0.10-0.09-0.09-0.09-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.09-0.10-0.10-0.10-0.10-0.10-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.08-0.08-0.08-0.08-0.08-0.08-0.08-0.07-0.06-0.06-0.06-0.06-0.07-0.06-0.07-0.07-0.07-0.07-0.07-0.07-0.07-0.07

FREEAIR

21.9521.5821.4721.8821.0520.9920.9120.5919.9119.8819.6319.7219.3618.7918.9018.8818.7718.3518.3518.1017.8917.5517.3316.8316.5916.0615.6415.5015.3215.1815.0114.4714.2013.9513.4913.1312.8112.5312.2412.0611.8911.5411.5710.8510.589.789.168.438.448.618.548.678.738.748.628.368.188.177.818.14

COMPLETEBOUGUER

14.6314.4114.0914.5513.7013.5113.2413.0012.5212.5512.1512.1611.7311.1310.9410.7810.5910.2910.299.989.799.629.428.948.858.588.077.807.527.527.407.046.856.656.286.105.925.755.545.395.254.934.894.404.544.504.313.823.863.923.413.633.463.383.243.103.002.952.552.74

12


aXAX JLVJH

ID LATITUDEdeg min

711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-711-646-646-

8687888990919293949596979899

1001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431817

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

33.1733.1333.1033.0533.0233.0032.9832.9532.9032.8532.8032.7332.6832.6332.5732.5332.4832.4532.4332.4532.4732.4732.4532.4332.3832.3532.3232.3032.2732.2332.2232.1732.1232.1032.0732.0232.0031.9531.9231.8731.8231.7731.7231.6731.6031.6531.6231.5831.5531.5231.4831.4731.4531.4331.4231.3831.3731.3518.3518.40

LONGITUDEdeg min

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

39.6639.6339.5739.5339.4839.4139.3439.2939.2639.2339.2139.1839.1639.1339.1439.1439.0939.0538.9838.9338.8638.7838.7138.6438.6038.5438.4838.4338.3838.3138.2638.2138.1438.1138.0638.0337.9837.9337.8837.8337.7837.7337.6837.6137.5337.4837.4337.3837.3337.2837.2137.1437.0937.0337.0036.9336.8636.8145.2145.11

ELEV(in ft)

160.5165.0170.1173.4176.2179.3180.0186.9203.5222.6229.0244.1267.0300.5335.1354.0352.2354.2362.3363.5364.6365.8366.6370.3373.1369.9370.7371.6371.5370.5368.4367.9367.2366.4365.4367.5370.9373.4373.9374.4375.8380.6383.9380.3381.4378.7375.4373.3368.3362.2359.9358.8358.3355.9353.4352.8349.7346.2334.8324.5

\ja&CMt<. vCijj ~v.uxviuiv. JL JL\JW & GRAVITY TERRAIN CDRV(mgals)

979946.15979945.72979945.54979944.85979944.47979944.22979943.72979942.29979941.97979940.40979939.97979938.47979936.35979934.15979931.90979931.47979931.40979931.40979930.65979930.65979930.54979930.40979930.04979929.97979929.40979929.47979929.35979929.10979929.04979929.04979929.04979928.72979928.72979928.60979928.85979928.47979928.35979928.35979928.15979927.90979927.60979927.10979926.35979927.15979927.47979927.72979927.47979927.22979927.35979927.97979928.47979928.60979928.40979928.22979928.40979928.29979928.04979928.22979919.65979920.29

(dens=2.67)

-0.03-0.03-0.03-0.03-0.03-0.02-0.02-0.02-0.02-0.02-0.02-0.010.000.030.070.100.090.090.110.110.110.110.120.120.120.120.120.120.120.120.110.110.110.100.100.100.110.110.110.110.110.120.120.110.110.110.110.100.090.080.080.080.080.070.070.070.070.060.070.06

-0.07-0.07-0.07-0.08-0.08-0.08-0.08-0.08-0.09-0.10-0.10-0.11-0.12-0.13-0.15-0.15-0.15-0.15-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.17-0.17-0.16-0.17-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.16-0.15-0.15-0.15-0.15-0.15-0.15-0.14

*u.ivyL-j«j-iXE.o


8.298.358.698.388.318.387.987.238.568.859.099.119.23

10.2511.3412.7512.5812.8212.8512.9412.9012.8712.6212.9212.7012.5012.5112.3712.3412.3112.1211.8311.8311.6711.8711.7611.9812.3012.1812.0611.9611.9811.6212.1512.6812.6012.0811.7011.4011.4911.8211.8611.6511.2811.2411.1310.6010.4819.7419.34

2.722.622.782.362.192.161.740.751.501.141.160.670.01

-0.10-0.170.620.510.670.450.500.420.350.070.25

-0.07-0.16-0.18-0.35-0.38-0.37-0.50-0.77-0.74-0.89-0.66-0.84-0.72-0.49-0.62-0.76-0.91-1.05-1.52-0.87-0.39-0.37-0.78-1.10-1.23-0.94-0.53-0.45-0.65-0.94-0.90-0.99-1.41-1.418.248.19

13


aj.AJ.J-'

ID

646-646-646-646-646-646-646-646-646-646-646-646-646-646-646-646-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-621-

LATITUDE

16151413121110987654321

4446474849505152535455565758596061626364656667686970717273747576777879808182838485868788

deg

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

min

18.4318.4718.5318.5818.6318.7018.7518.8018.8718.9218.9719.0319.1019.1519.2219.2519.8719.9219.9519.9820.0320.1020.1520.2020.2720.3220.3720.4320.4820.5320.6020.6820.6720.6520.6520.6320.6320.6320.6520.6320.6820.7220.7320.7520.7520.7720.7820.7820.8020.8220.8520.8720.8820.9020.9220.9320.9821.0221.0521.08

LONGITUDEdeg

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

45.0845.0845.0845.0845.0845.0845.0845.0845.0945.1145.1145.0945.0445.0445.0445.0443.4143.3943.3943.3843.3943.3643.3443.3143.3143.2943.2643.2143.2143.1843.1643.1643.0943.0342.9442.8642.7842.7142.6442.5642.5342.4942.4542.3642.2842.2042.0942.0441.9641.8941.8441.8041.7341.6641.5741.5341.4641.3941.3441.28

ELEV(in ft)

329.8333.3326.6320.9317.2321.5329.6327.4325.8325.3317.7308.9313.4303.1295.7293.3214.1215.1215.5211.9211.3199.0196.9198.8195.5197.5199.5208.0208.6208.5205.1200.9214.5224.5245.8253.7266.7271.6264.8277.2282.1273.2262.8243.6241.7256.8266.9275.4288.0291.7295.8291.2294.6301.8308.6309.5311.6316.9317.0329.6


979920.10979920.10979920.40979920.79979921.15979920.85979920.47979920.97979920.65979920.79979921.29979921.47979921.54979922.15979922.60979923.15979935.97979935.72979935.60979935.40979935.60979936.04979935.79979935.65979935.79979935.72979935.90979935.90979935.85979935.79979935.54979935.47979935.15979934.65979934.04979933.15979932.10979931.72979931.97979931.15979930.35979930.54979931.04979931.65979931.47979930.15979929.47979928.40979927.29979926.90979926.29979926.60979925.97979925.22979924.65979924.35979923.97979923.47979923.35979922.79

(dens=2

0.060.070.060.050.050.050.060.060.060.050.040.030.040.030.020.02

-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.02-0.02-0.02-0.01-0.010.000.000.000.010.010.000.00

-0.01-0.01-0.010.000.000.010.020.020.010.020.020.030.030.030.030.030.04

CURV.67)

-0.14-0.15-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.13-0.14-0.13-0.13-0.13-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.09-0.10-0.11-0.11-0.12-0.12-0.12-0.12-0.12-0.12-0.11-0.11-0.11-0.11-0.12-0.12-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.14-0.14-0.14-0.14

FREEAIR

19.6119.8819.4619.2419.1819.1819.4919.7119.1419.1618.8718.1418.5318.1017.7518.0322.5022.2722.1421.5621.6420.8220.3020.2619.9920.0420.3421.0520.9720.8320.1719.5820.5621.0322.4222.3022.4722.5522.1422.5122.1021.4020.9019.6819.3219.3919.6419.3719.4219.3519.0818.9318.6018.5018.5418.3218.0618.0017.8418.43

COMPLETEBOUGUER

8.288.448.248.218.278.128.178.467.957.977.947.507.757.667.567.92

15.0814.8114.6714.2114.3113.9113.4713.3613.2013.1913.4113.8313.7413.6013.0512.6213.1313.2513.9213.5213.2613.1712.9912.9412.3711.9611.8311.2510.9610.5110.429.859.489.298.888.888.458.107.917.667.337.086.927.09

14


a J.AJL J.wn ID LATITUDE

deg min

621- 89621- 90621- 91621- 92621- 93621- 94621- 95621- 96621- 97621- 98621- 99621- 100621- 101621- 102621- 103621- 104621- 105621- 106621- 107621- 108621- 109621- 110621- 111621- 112621- 113621- 114621- 115621- 116621- 117621- 118621- 119621- 120621- 121621- 122621- 123621- 124621- 125621- 126621- 127621- 128621- 129621- 130621- 131621- 132621- 133621- 134621- 135621- 136621- 137621- 138621- 139621- 140621- 141621- 142621- 143603- 1603- 2603- 3603- 4603- 5

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

21.1021.1521.2221.2521.3021.3721.4221.4721.5021.5521.6021.6321.6821.7321.8021.8721.9522.0222.0822.1322.2222.2722.3222.3722.4022.4822.5322.6022.7022.7722.8522.9222.9823.0523.1023.1323.2023.2523.3223.4023.4323.5223.5823.6323.7023.7723.8323.9023.9524.0024.0524.1024.1524.2024.2320.7020.7720.8020.8520.83

LONGITUDEdeg min

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

41.2341.2041.1441.0641.0340.9840.9640.9340.8940.8640.8340.8040.8140.8340.8140.8140.8040.8040.7840.7640.7340.7140.7040.6640.6440.6140.5740.5640.5340.5340.5340.5340.5640.5640.5640.5340.5140.4940.4940.4840.4640.4540.4340.4140.3940.3840.3640.3440.3340.3140.2940.2840.2640.2540.2543.2043.2343.3143.3643.43

ELEV(in ft)

324.6321.9325.9329.3333.0332.6329.6328.2330.0333.0328.3334.6333.6326.5308.8313.2310.4289.2281.7289.2298.0294.2301.6299.1297.8304.2300.6289.7300.0292.5278.3272.5266.2263.3262.0262.0259.0251.3246.1245.3251.8255.0252.5258.1255.7244.8250.9269.7254.5235.6235.5249.9258.1243.4247.0209.4210.2230.2241.4250.6


979922979922979921979921979920979920

.40

.35

.72

.40

.85

.35979920.35979920979919979919979919979919979919979919979921979921979921979922979923979922979922979921979921979921979921979921979921979922979921979922979923979923979924979924979924979924979924979925979925979926979925979925979925979925979925979926979925979925979926979926979926979925979925979926979926979933979933979931979930979929

.22

.97

.47

.65

.22

.35

.40

.29

.15

.10

.97

.47

.85

.04

.65

.10

.47

.47

.22

.15

.10

.29

.04

.04

.72

.22

.54

.47

.65

.85

.29

.60

.04

.47

.22

.54

.15

.22

.15

.90

.04

.04

.72

.97

.90

.60

.65

.90

.90

.35

.35

.29

.40

CURV(dens=2.67)

0.040.040.040.040.050.040.040.040.040.040.040.050.050.040.020.030.020.010.000.010.020.010.020.020.020.020.020.010.020.020.010.000.000.000.000.000.00

-0.01-0.01-0.01-0.010.00-0.010.000.00

-0.01-0.010.010.00-0.02-0.020.000.00

-0.01-0.01-0.02-0.02-0.02-0.02-0.01

-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.15-0.15-0.14-0.13-0.14-0.14-0.13-0.12-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.12-0.12-0.12-0.12-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.12-0.11-0.10-0.10-0.11-0.11-0.11-0.11-0.09-0.09-0.10-0.11-0.11


17.5417.1616.8116.7616.4915.8515.4915.1515.0314.7414.4114.5214.4913.8013.9214.1013.6713.4513.1513.1613.0512.2312.3012.3612.1912.4311.9511.7811.7911.7311.2811.3111.1311.0810.8110.9410.7610.4110.1310.3710.3710.2910.2910.3610.109.90

10.1410.9410.449.279.449.65

10.059.64

10.1918.7818.2118.0517.9617.97

6.366.095.595.435.034.404.143.863.673.283.113.013.022.563.283.312.973.473.423.182.782.071.902.051.931.941.591.781.451.641.671.901.931.981.761.891.811.721.621.891.661.491.551.441.271.431.461.631.651.111.281.021.131.231.65

11.5310.9310.079.609.30

15


SXH.XJLUN

ID LATITUDEdeg min

603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-730-

6789

1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

20.8220.8320.9020.9521.0221.0821.1321.2021.2521.2821.3221.3521.3521.3721.3821.4321.5221.5721.6321.7221.7721.8321.9021.9321.9722.0022.0322.0522.0722.1022.1522.2022.2522.2822.3322.3522.3722.3822.4022.4222.4222.4222.4222.4222.4322.4222.4722.5222.5722.6222.6722.7322.7822.8322.8822.9523.0023.0823.1523.18

LONGITUDEdeg

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

43.4943.5643.5643.5643.5643.5643.5643.5643.5943.6443.7043.7643.8343.8943.9844.0144.0644.0844.0844.0844.0844.0844.0944.2044.2544.3344.3944.4644.5144.5744.5944.6144.5644.5344.4844.4344.3644.3344.2544.2044.1344.0644.0143.9443.8843.7843.7443.7143.6843.6643.6643.6443.6643.6843.7043.7143.7343.7443.7643.78

ELEV(in ft)

239.3234.2240.9248.9249.4243.2251.5256.9254.4258.3259.0261.8271.0283.5300.6307.6306.6288.4287.6284.5293.5305.2309.1319.5318.6326.1329.5332.7335.9331.0322.4315.7308.3306.1305.1305.8303.8300.9297.1290.2284.3282.3270.9247.0238.3238.6255.8284.0295.6300.4303.0307.6312.2308.5313.6314.1315.4313.6309.6312.5

wtssc.KwVc.ij -i,wjftKe.i, j. GRAVITY TERRAIN(mgals)

979929.85979929.85979929.54979928.97979928.90979929.29979928.65979928.15979928.40979927.90979927.72979927.47979926.85979925.90979924.65979924.10979924.04979925.35979925.40979925.65979925.04979924.29979923.90979923.04979923.04979922.54979922.22979921.97979921.54979921.85979922.47979922.85979923.29979923.47979923.60979923.60979924.15979924.35979924.72979925.22979925.65979925.72979926.47979928.22979928.79979928.47979927.79979925.90979924.72979924.35979924.10979923.72979923.29979923.72979923.35979923.15979923.15979923.29979923.54979923.22

(dens=2

-0.02-0.02-0.02-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.010.000.000.020.020.020.010.000.000.010.020.020.030.030.030.030.040.040.040.030.020.010.010.010.010.010.010.010.000.000.00

-0.01-0.01-0.01-0.01-0.010.000.010.010.010.020.020.020.020.020.020.020.020.02

CURV.67)

-0.10-0.10-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.11-0.12-0.12-0.13-0.13-0.13-0.13-0.13-0.12-0.13-0.13-0.13-0.14-0.14-0.14-0.14-0.14-0.15-0.14-0.14-0.14-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.12-0.12-0.12-0.11-0.10-0.10-0.11-0.12-0.13-0.13-0.13-0.13-0.14-0.13-0.14-0.14-0.14-0.14-0.13-0.14

JUM VJCOHOj J.E. 0

FREE COMPLETEAIR

17.3716.8717.1017.2117.0816.8016.8616.7716.7216.5316.3716.3316.5816.7817.1217.1616.8716.4116.2916.1216.2716.5416.4216.4916.3516.5116.4716.4816.3316.1315.8815.5515.2215.1515.1115.1515.4915.4015.3815.2015.0814.9614.6414.1413.8813.6014.4715.1614.9915.0014.9214.8914.8214.8314.8714.6114.6614.5214.2914.19

BOUGUER

9.098.768.768.608.458.398.167.897.927.607.417.287.226.996.766.556.306.456.356.296.156.015.765.495.375.285.125.034.774.744.774.664.584.594.584.595.005.015.135.185.265.215.275.605.645.355.625.354.794.634.474.284.054.194.053.783.783.713.623.42

16


AXAU, J.UM

ID LATITUDEdeg min

730-730-730-730-730-730-730-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-603-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-

666768697071728382818079787776757473727170696867666564636261605958575655545352515049484746454443424140393837363534333231

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

23.2323.2723.3323.3723.4323.4723.5023.7023.7323.7723.8023.8523.9023.9524.0224.0724.1024.1524.2024.2324.2524.3024.3224.3024.3224.3824.4324.4724.5224.5724.6324.6824.7324.7724.8224.8824.9324.9825.0325.1025.1325.2025.2725.3225.3725.4225.4825.5325.5825.6225.6725.7025.7325.8325.8825.9325.9826.0326.0826.13

LONGITUDEdeg

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

43.8043.8143.8343.8443.8443.8443.8646.7846.8146.8646.9146.9647.0047.0347.0947.1347.1647.2347.2847.3347.3847.4347.4947.5647.6347.5747.5447.5347.5347.5147.5147.4847.4547.4147.3947.3447.3347.3147.3147.3947.4147.4547.4347.4347.4347.4147.3947.3847.2847.2347.1647.1147.0847.0447.0847.0847.0647.0447.0347.01

ELEV(in ft)

317.4320.3324.2330.3333.4332.9328.5341.3340.1337.1347.6346.3346.9347.5342.5340.6340.9336.2331.5335.9328.5325.6324.2323.4318.5322.3326.5316.9311.9308.0291.2273.0275.7295.1292.5302.9301.8294.4289.7286.8292.4285.9264.8245.2233.0234.4253.2264.7281.1289.1289.1285.3290.9304.8293.0285.8293.3301.4313.8312.8


979922.85979922.54979922.40979921.85979921.79979921.90979922.22979925.65979925.54979926.22979925.54979926.04979926.22979926.22979926.54979927.04979927.40979926.72979928.47979928.35979928.79979929.29979929.60979929.60979930.22979929.97979929.65979930.29979930.85979931.10979931.85979933.47979933.35979932.04979932.04979931.54979931.54979932.15979932.54979933.04979932.90979933.35979934.90979936.47979937.35979937.22979936.22979935.85979934.47979933.85979933.97979934.10979933.54979932.79979933.72979934.29979933.90979933.47979932.97979932.97

(dens=2

0.020.030.030.040.040.040.030.030.030.030.040.040.040.040.030.030.030.020.020.020.010.010.010.010.010.010.010.000.000.00

-0.01-0.02-0.02-0.01-0.01-0.01-0.01-0.01-0.01-0.02-0.01-0.02-0.02-0.02-0.02-0.02-0.02-0.02-0.02-0.01-0.01-0.02-0.01-0.01-0.01-0.02-0.01-0.010.000.00

CURV.67)

-0.14-0.14-0.14-0.14-0.15-0.14-0.14-0.15-0.15-0.15-0.15-0.15-0.15-0.15-0.15-0.15-0.15-0.15-0.14-0.15-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.13-0.13-0.12-0.12-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.12-0.12-0.11-0.10-0.10-0.11-0.12-0.12-0.13-0.13-0.12-0.13-0.13-0.13-0.12-0.13-0.13-0.14-0.14

FREEAIR

14.2114.1114.2614.2314.3714.3714.2318.5818.3118.6518.9219.2219.3919.3719.1219.3619.7118.5119.7520.0019.7219.8720.0219.9820.1020.1320.1219.8019.8219.6318.7218.5518.6119.0618.7519.1418.9718.8118.6818.8119.1518.8918.3518.0117.6617.5918.2718.9219.0019.0819.1218.8518.7719.1918.9318.7519.0019.2519.8519.69

COMPLETEBOUGUER

3.273.083.092.862.892.912.926.826.607.046.957.307.447.417.327.637.976.928.328.428.388.648.838.829.119.018.858.869.058.998.659.109.068.868.648.678.538.638.678.889.048.999.189.529.599.479.519.759.279.089.128.988.728.668.808.868.868.839.018.88

17


SXRJ.J.UIN

ID LATITUDEdeg min

605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-605-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-

302928272625242322212019181716151413121110987654321123456789

101112131415161718192021222324252627282930

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

26.1726.2026.2726.3226.3726.4326.4726.5226.5726.6026.6326.6826.7526.8026.8726.9226.9527.0027.0327.1027.1227.1527.2227.2727.3227.3727.4227.4827.5327.5827.2227.2727.3227.3727.4327.4827.5327.5727.6327.7027.7727.8227.8727.9327.9828.0328.0828.1528.2228.2528.3228.3728.4228.4528.5028.5528.6028.6328.7028.73

JjUV-Ai JAJ« a

LONGITUDEdeg

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

47.0046.9846.9446.9346.8946.8646.8346.8046.7646.7146.7046.7046.7046.7346.7046.6646.6346.5746.5446.5346.4946.4646.4546.4646.4646.4946.5346.5646.5746.5744.6444.6444.6344.6344.6344.6344.6344.6344.6144.5944.5744.5744.5744.5744.5744.5744.5744.5944.5944.5744.5744.5744.5644.5344.4944.4544.4144.3944.3844.38

ELEV(in ft)

308.8307.7313.1322.9320.3311.7315.4305.2301.5287.7292.7285.4278.8299.1318.0318.3319.3315.3315.0326.4326.4330.1318.5317.2315.6314.7314.8317.5319.5325.0281.9272.8267.3253.4250.7256.2273.1287.5293.8301.7289.6299.2257.0235.7218.9217.4226.0245.2261.8269.3259.8258.1258.5252.6235.9218.1207.3207.3215.0214.1

\Joocj\ycfU v.wiuvdv. j. GRAVITY TERRAIN(mgals)

979933.22979933.47979932.97979932.35979932.72979933.40979933.22979933.90979934.15979935.04979934.72979935.35979935.85979934.85979933.65979933.65979933.72979934.10979933.54979932.97979933.15979933.65979934.22979934.35979934.85979934.97979935.10979935.29979935.47979935.60979932.54979933.35979933.79979934.90979935.10979934.79979934.10979933.22979933.10979932.65979933.65979934.54979936.10979937.85979939.04979939.40979939.04979937.85979937.10979936.65979937.60979937.72979938.04979938.54979939.85979940.90979941.72979941.79979941.47979941.47

(dens=2

0.000.000.000.010.000.000.00-0.01-0.01-0.01-0.01-0.02-0.02-0.010.000.000.000.000.000.010.010.010.000.000.000.000.000.000.000.01-0.01-0.01-0.01-0.02-0.02-0.02-0.010.000.010.010.000.01-0.02-0.03-0.03-0.03-0.03-0.03-0.02-0.02-0.02-0.02-0.02-0.02-0.03-0.03-0.03-0 .03-0.03-0.03

CURV.67)

-0.13-0.13-0.14-0.14-0.14-0.14-0.14-0.13-0.13-0.13-0.13-0.12-0.12-0.13-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.14-0.12-0.12-0.12-0.11-0.11-0.11-0.12-0.13-0.13-0.13-0.13-0.13-0.11-0.10-0.10-0.10-0.10-0.11-0.11-0.12-0.11-0.11-0.11-0.11-0.10-0.10-0.09-0.09-0.09-0.09

FREEAIR

19.5019.6119.5119.7319.7919.5719.6919.3319.1618.7118.8218.6818.4619.3019.7719.7319.8519.7919.1519.5519.7020.5119.8919.8220.0920.0620.1320.4820.7721.3514.7714.6514.4914.2314.0914.2115.0415.4615.8516.0415.7917.5115.0314.6914.2314.3814.7515.2715.9816.1816.1416.0316.3116.2215.8915.1914.9214.9415.2415.12

COMPLETEBOUGUER

8.838.988.698.598.728.808.798.788.748.768.708.808.818.968.798.748.828.898.278.298.449.128.898.869.199.199.269.519.74

10.135.025.215.245.455.415.345.605.535.715.635.797.196.146.526.646.846.926.776.926.867.157.107.367.477.717.627.737.757.797.70

18


bTAXX

ID

v«

LATITUDEdeg min

606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-606-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-

313233343536373839404142434445464748495051525354555657585960616263123456789

101112131415161718192021222324252627

373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

28.7828.8328.8828.9328.9829.0529.1029.1529.2229.2529.3029.3529.4029.4529.5029.5529.5829.6229.6729.7229.7529.8029.8329.8829.9329.9830.0530.0830.1330.2230.2730.3030.3530.5230.5730.6030.6530.7030.7530.8230.8730.9230.9831.0331.1031.1531.2031.2731.3231.3731.4231.4831.5331.5831.6331.7031.7531.8031.8331.92

LONGITUDEdeg min

777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

44.3844.3844.3944.3944.4144.4144.4144.4344.4344.4544.4544.4644.4844.4844.4544.4144.3844.3344.2944.2544.1844.0944.0844.0844.0844.0844.0944.0944.0944.1144.0844.0343.9642.6642.6642.6442.6142.5742.5442.5342.4942.4842.4842.4942.5142.5342.5442.5342.5142.4842.4642.4142.3942.3942.3842.3842.3642.3642.3442.33

ELEV(in ft)

217.2231.7236.7239.7256.2279.4274.8284.0299.2284.3273.7263.1264.9283.6273.8271.8274.7270.5263.6284.2289.7300.3301.6305.8302.0301.2292.0288.0287.5282.7284.1288.3315.6401.4398.0399.4401.7403.2403.3400.8396.3385.4390.1399.0401.1398.4386.4374.9350.0314.4291.5286.9282.2273.0265.4256.9244.5235.1230.6228.2


979941.54979940.90979940.65979940.79979939.90979938.47979939.04979938.65979937.65979938.79979939.72979940.54979940.65979939.54979940.40979940.47979940.35979940.60979941.04979939.72979939.35979938.72979938.60979938.60979939.04979939.10979940.35979940.35979940.47979940.97979941.04979940.79979938.90979930.47979930.22979930.40979930.22979930.35979930.35979930.65979930.97979931.79979931.60979931.22979931.47979931.72979932.65979933.15979935.10979937.60979939.22979939.54979939.90979940.79979941.35979942.15979943.04979943.60979944.15979944.29

(dens=2

-0.03-0.03-0.02-0.02-0.02-0.01-0.01-0.010.00

-0.01-0.01-0.02-0.02-0.01-0.02-0.02-0.02-0.02-0.02-0.01-0.010.000.000.000.000.00-0.01-0.01-0.01-0.01-0.01-0.010.010.130.130.130.140.140.140.140.130.120.130.150.160.150.130.110.070.030.010.000.00

-0.01-0.01-0.01-0.02-0.02-0.03-0.03

CURV.67)

-0.10-0.10-0.10-0.11-0.11-0.12-0.12-0.12-0.13-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.12-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.13-0.12-0.12-0.13-0.14-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.17-0.16-0.15-0.14-0.13-0.13-0.12-0.12-0.12-0.11-0.11-0.10-0.10-0.10

- «JM WL1H-U J.£, ;> - - -

FREE COMPLETEAIR

15.4016.0616.2116.5517.1417.7917.8618.2618.5818.2918.1417.9018.1018.6818.5418.3518.4518.2617.9818.5218.6218.9118.8819.2019.2119.1219.4018.9818.9918.9019.0319.1319.7419.1318.4918.7518.7218.9218.8518.8118.6418.3618.5318.9119.2619.1918.9218.2217.7616.8416.2416.0315.8715.8415.6015.5015.1514.7614.8414.62

BOUGUER

7.878.038.018.258.278.138.368.448.258.468.688.798.938.879.068.948.958.898.858.698.618.548.468.638.778.729.319.029.059.139.219.168.855.394.875.094.985.135.065.115.085.175.185.285.565.575.705.385.746.016.186.126.136.396.426.616.696.626.846.71

19


SJ.A.J.J.' ID LATITUDE

deg min

607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-607-652-652-652-652-652-652-652-652-652-652-652-652-652-652-652-652-652-652-

2829303132333435363738394041424344454647484950515253545556575859123456789

101112131415161718

3737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737373737

31.9732.0232.0832.1332.2032.2532.3232.3732.4332.4832.5332.6032.6532.7032.7532.8032.8832.9533.0033.0733.1233.2033.2733.3033.3533.4233.4733.5333.5533.6333.7033.7334.2734.3034.4334.5034.5534.6234.6734.7334.7834.8334.8834.9334.9835.0335.1035.1535.2235.27

LONGITUDEdeg

7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777

min

42.3142.2542.1842.1342.1142.0942.0842.0842.0842.0642.0442.0142.0142.0342.0342.0442.0442.0642.0642.0642.0842.0842.0942.1342.1842.1642.1442.1142.0442.0342.0142.0642.9442.9342.9142.8942.8942.8842.8842.8642.8642.8442.8342.8042.8042.8042.8042.8042.7842.78

ELEV(in ft)

223.5220.1229.8227.8224.6218.3216.3219.9221.0229.5230.3236.5226.0226.4226.7220.4208.6201.1197.7184.0170.7149.7153.3154.3164.2173.7185.4196.0219.3215.8222.8221.0213.5205.1198.4194.6189.9186.7181.5174.8169.6163.5141.1130.4132.5133.0133.0133.4134.3134.0


979944.60979944.65979944.35979944.40979944.79979945.60979945.79979945.79979945.65979945.22979945.35979944.85979945.79979945.29979945.72979946.40979947.40979948.10979948.22979949.54979950.35979952.04979952.04979952.35979951.85979951.54979950.90979950.15979949.35979949.29979948.90979949.29979954.29979954.97979955.47979955.85979956.47979956.60979957.04979957.79979958.40979959.04979958.47979961.54979961.35979961.60979961.65979961.90979962.10979961.90

(dens=2

-0.03-0.03-0.03-0.03-0.03-0.03-0.04-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.03-0.04-0.04-0.04-0.04-0.05-0.05-0.04-0.05-0.05-0.05-0.05-0.05-0.05-0.04-0.04-0.04-0.04-0.04-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.05-0.04-0.04-0.04-0.04-0.04-0.04-0.04

CURV.67)

-0.10-0.10-0.10-0.10-0.10-0.10-0.09-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.10-0.09-0.09-0.09-0.08-0.08-0.07-0.07-0.07-0.07-0.08-0.08-0.09-0.10-0.09-0.10-0.10-0.09-0.09-0.09-0.09-0.08-0.08-0.08-0.08-0.07-0.07-0.06-0.06-0.06-0.06-0.06-0.06-0.06-0.06

FREEAIR

14.4214.0814.6014.3814.3814.5214.4214.6814.5614.8615.0014.9814.8514.3214.7114.7114.4814.3814.1114.0413.5213.1313.3613.7214.0814.5614.9515.1116.4715.9716.1316.3119.8119.6619.3519.2619.3719.1018.9819.0119.0519.0516.3018.2918.2318.4518.4018.6118.7918.50

COMPLETEBODGUER

6.676.446.636.486.596.956.917.056.896.907.016.787.016.476.847.067.247.397.247.637.587.928.018.348.368.518.498.298.868.488.398.63

12.4012.5312.4412.4912.7612.6012.6612.9213.1413.3511.3713.7413.6113.8213.7613.9614.1113.83

20

Documents

UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL …pubs.usgs.gov/of/1988/0602/report.pdf · 2010. 11. 7. · UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Principal