INFORMATION ~ CIRCULAR~

A GRAVITY SURVEY OF THE

SOUTH- CENTRAL GEORGIA PIEDMONT

by Robert H. Carpenter . and Preston Prather

THE GEOLOGICAL SURVEY OF GEORGIA

DEPARTMENT OF MINES, MINING AND GEOLOGY

Jesse H. Auvil, Jr. State Geologist and Director

ATLANTA

1971

For convenience in selecting our reports from your bookshelves, they will be color-keyed across the spine by subject as follows:

Red Dk. Purple

Maroon Lt. Green Lt. Blue Dk. Green Dk. Blue Olive

Yellow

Dk. Orange Brown Black

Valley & Ridge mapping and structural geology Piedmont & Blue Ridge mapping and struc-

tural geology Coastal Plain mapping and stratigraphy Paleontology Coastal Zone studies Geochemical and Geophysical studies Hydrology Economic geology Mining directory Environmental studies Engineering studies Bibliographies and lists of publications Petroleum and natural gas Field trip guidebooks.

Colors have been selected at random, and will be aug­mented as new subjects are published .

A GRAVITY SURVEY OF THE

SOUTH -CENTRAL GEORGIA PIEDMONT

by Robert H. Carpenter and Preston Prather

THE GEOLOGICAL SURVEY OF GEORGIA

DEPARTMENT OF MINES, MINING AND GEOLOGY

Jesse H. Auvil, Jr. State Geologist and Director

ATLANTA

1971

CONTENTS

Abstract . .

Introduction

Acknowledgment.

Method of Study .

Results.

Conclusions .

References .

Appendix A computer print-out.

ILLUSTRATIONS

Figure 1. Location Map of Area Studied . . . . .

Figure 2. Bouguer Gravity Anomaly Map of Georgia

Figure 3. Generalized Geologic Map of the Study Area

Plate 1. Bouguer Anomaly Map of the South-Central Georgia Piedmont

Page

1

1

1

1

3

3

6

following page 6

2

4

5

in pocket

A GRAVITY SURVEY OF THE SOUTH-cENTRAL GEORGIA PIEDMONT

by

Robert H. Carpenter! and Preston Prather2

ABSTRACT

A gravity survey of a 1000 square mile area (210 gravity stations ) in the south-central Georgia Pied­mont defines in considerable detail a segment of a major gravity anomaly that extends along the Appalachians from Alabama to Vermont. The major feature is a northeast-trending gravity ridge with a steep negative northwest gradient which averages about 2 mgal/mile. Superimposed on the ridge is a pronounced positive anomaly with an amplitude of 20 mgals and a diameter of approxi­mately 12 miles.

The anomaly is interpreted to reflect the sub­surf~ce distribution of diorite, gabbro, and norite intrusives. Small bodies of these rocks exposed at the surface are probably apophyses from much larger intrusive bodies at depth.

INTRODUCTION

This report describes a gravity survey of an area of approximately 1000 square miles in the south­cen tral Georgia Piedmont. Bouguer anomaly values are reported for 210 stations in Butts, Jasper, Putnam, Jones, Bibb, and Monroe Counties (Figure 1).

Previously, Carpenter and Hughes (1970) de­scribed a detailed gravity survey in southern Jasper County in the vicinity of the Gladesville Norite. Disclosure of a pronounced gravity gradient sug­gested that exposed mafic intrusives in the area were probably apophyses from a large mafic intru­sive at depth.

The present study was undertaken to obtain closure on the indicated positive anomaly and to determine t he subsurface distribution of dense

1 Dr. Carpenter is Associate Professor of Geology, University of Georgia.

2 Mr. Prather was a candidate for Masters degree, Department of Geology, University of Georgia.

1

mafic rocks which appear to account for the anoma­lous positive Bouguer values in this area.

ACKNOWLEDGMENTS

The authors would like to express their apprecia­tion to the Georgia Department of Mines, Mining and Geology for providing financial support for this investigation and to Mr. R. W. Johnson, Jr., of the Geologic Branch, Tennessee Valley Author­ity, for assistance in arranging for computer analy­sis of the gravity data on the TVA computer.

METHOD OF STUDY

A LaCoste and Romberg Model G geodetic gravity meter was utilized in measurement of gra­vitational acceleration. The instrument has a read­ing accuracy of ±0.01 milligals and a drift rate nor­mally less than 1 milligalfmonth.

All measurements are relative to a base station established by the Coast and Geodetic Survey in the town square of Monticello, Georgia. The value reported for this station is 979563.00 milligals (written communication, J. A. Kozlosky). A secon­dary base station was established at station 5061 in eastern Monroe County. During field operation, base stations were reoccupied every 3 or 4 hours to determine the rate of instrumental and diurnal drift. Observed gravity values are corrected for drift and are estimated to be accurate to ±0.03 milligals. For the computer programs, the value is rounded off to the nearest 0.1 milligal.

Sites selected for measurement are separated by distances normally less than 2 miles. The sites are either at bench marks or at road intersections where elevations are presented on the topographic maps published by the U. S. Geological Survey. The maximum uncertainty in elevation is probably ±4 feet at road intersections and the corresponding maximum error in Bouguer anomaly values is about .24 milligals.

Figure 1. Location Map of Area Studied

2

Bouguer values were calculated for each station on the Tennessee Valley Authority IBM 360/50 computer utilizing a program developed at the University of Wisconsin. The basic equation in­volved in the calculation is:

Bouguer anomaly = Obs. Gravity - (theoretical gravity + free air correction - Bouguer correction)

Observed gravity is the measured value corrected for drift and related to a station for which the absolute gravity has been determined.

Theoretical gravity is the calculated gravity at sea level for any particular latitude according to the International Gravity Formula of 1930. This formula is:

Theoretical gravity = 978.049 (1 + 0.0052884 sin2 w - 0.0000059 sin2 w) where w is the latitude in degrees.

Both the free air correction and the Bouguer correction are elevation-dependent terms. The free air correction compensates for the vertical distance a gravity station stands above sea level. The cor­rection is 0.09406 milligals/foot. The Bouguer cor­rection compensates for the effect of the rock lying between the land surface and sea level. This correction requires an assumption of the density of the rock mass. The formula for the Bouguer cor­rection is:

Bouguer correction Where G

0 h

2rrGoh Gravitational Constant, density, and Elevation.

From the above discussion, it is apparent that the principal facts necessary for computation of Bouguer anomaly values are: observed gravity, latitude, and elevation. This information is sum­marized on the computer print-out (Appendix A), as well as Bouguer anomaly values calculated for the following assumed densities: 2.20, 2.35, 2.50, 2.67, 2.75, and 2.85.

Results

A Bouguer anomaly map of the study area is shown in Plate 1 for an assumed density of 2.67 gm fcc. A striking feature of the map is the pro­nounced gravity gradient along the western edge

3

of a northeast trending gravity high. In a distance of only 26 miles, values range from -32.0 milligals for station 5110 in the northwest to +38.2 milligals for station 5009 on the positive closure at the Jones-Jasper County boundary. This amounts to a total variation of 70.2 milligals or 2.7 milligals /mile ~

There are some relationships between features on the gravity map and major geological features shown on the Geologic Map of Georgia (1939) (Figure 2). The unit mapped as Hornblende Gneiss and described by the statement, "includes diorite gneiss, gabbro, and injection gneiss," underlies the gradient northwest of the central gravity ridge. The axis of the gravity ridge corresponds reasonably well with the eastern boundary of the hornblende gneiss unit in the eastern portion of the study area. However, the hornblende gneiss unit is shown to terminate east of Forsyth even though the gravity ridge extends southwest of the terminus. The de­crease in gradient between the 0 and + 20 milligal contours in northeastern Monroe County possibly reflects the southern termination of the hornblende gneiss as shown on the Geologic Map of Georgia.

Along the crest of the gravity ridge in central Jones County, the gravity surface is relatively flat. Two weak gravity lows are present on the ridge southwest of Gray. These features appear to be related to the outcrop of a granitic intrusive shown on the Geologic Map of Georgia (1939 ).

Known norite occurrences lie in a rather re­stricted zone which parallels the isogal contours. The relationship is probably not fortuitous as the isogal contours bend away from the northeast regional strike. The Gladesville Norite, mapped by Matthews (1967) in southwestern Jasper County, occurs between the +8 and +16 milligal contours. Three other norites have been mapped by Prather (M. S. Thesis, Univ. of Georgia, in preparation) in northeastern Monroe County. These lie between the +4 and +16 milligal contours.

CONCLUSIONS

The gravity ridge with the steep western gradient is probably a part of a long, more or less continu­ous, gravity anomaly that extends from Vermont to Alabama (Figure 3). The gravity pattern deter­mined in the present study is virtually identical to

After: Bouguer Gravity Anomaly Map of the United States, Amer. Geophy. Union and USGS, 1964.

4

BOUGUER GRAVITY ANOMALY

MAP OF GEORGIA

Figure 2.

Contour interval 10 milligals

Reduction density 2.67 g/cm3

0 20 40 miles

D

Figure 3 . GENERALIZED GEOLOGIC MAP OF THE STUDY AR EA

• • • ' LEGEND

• • \ cgn • I• .·1 cgn biotite gneiss and • ' • • schist, includes in·

agn • ., • • jection gneiss

• ~ ems muscovite schist

• • bd ggn granite gneiss

• • [!] hgn hornblende gneiss,

• includes diorite gneiss gabbro, and injec-

• tion gneiss

• D . Cgr biotite and muscovite granite

OJ agn augen gneiss

CJ IS1 diabase dike

\1 E;J CPs Coastal Plain sediments.

Area of Study 121 fault

Modified after: Geologic Map of Georgia. Georgia Department of Mines, Mining and Geology, 1939

5

that determined by Mann (1962) and Best and others (1970) in portions of the Piedmont of North Carolina. Based on a model analysis of the gradient near Lexington, North Carolina, Best and others (1970) determined that the best model was repre­sented by a mass 50,000 feet thick, with a density contrast of 0.28 ,gm {cc. The top of the mass is estimated to be within 2000 feet of the surface. Preliminary model analysis of the gravity data in the south-central Piedmont of Georgia suggests a similar subsurface distribution of anomalously dense rocks.

Basic intrusives of the diorite-gabbro-norite as­sociation commonly occur along the Piedmont gravity high in the eastern United States. However, even the largest of these intrusives is too small to account for the magnitude of the observed gravity anomaly. The most probable explanation is that the anomaly reflects a more or less continuous mafic intrusive originating in the mantle or lower crust and extending upward to within a few thousand feet of the present erosional surface. Small mafic intrusives occurring along the _gravity high probably represent apophyses from the parent intrusive at depth.

6

REFERENCES

American Geophysical Union and the U. S. Geologi­cal Survey, Bouguer gravity anomaly map of the United States, 1964.

Best, David M., Wilburt H . Geddes, Tse-Chuang Hu, Joel S. Watkins, and David H . Walz, 1970, Gravity investigation of the contact between the Carolina Slate Belt and Charlotte Belt in central North Carolina: Paper presented at Southeastern Section Meeting of the Geological Society of America at Lexington, Kentucky.

Carpenter, Robert H., and Thomas C. Hughes, 1970, A geochemical and geophysical survey of the Gladesville Norite, Jasper County, Georgia: Ga. Dept. of Mines, Mining and Geology, Inf. Circ. 37, 7 p.

Georgia Geological Survey, 1939, Geologic Map of Georgia: Ga. Dept. of Mines, Mining and Geology

Mann, Virgil 1., 1962, Bouguer gravity map of North Carolina: Southeastern Geology, v. 3, no. 4 , p. 207-220.

Matthews, Vincent, III, 1967, Geology and petro­logy of the pegmatite district in southwestern Jasper County, Georgia: Unpublished M. S. thesis, Univ. of Georgia, 68 p.

APPENDIX A

--~AVITY PROGRA)j.

__jjQ_,_l.AI__.Ul:H.G E!..f.'L..Q~_D _ _ THE_OB_ _ __ _ L_O~.§. ____ LA.I_ __ _ FA_ _____ 92 .20 B2 . 35 B2. 50 82.67 82 .75 82.85

T500l 33 14.10 83 37.40 621 979.5839 979.5978 -8~.6233333 33.235 0~00 44.5 2 7.~ 2 5 . 8 24.7 L3 . 3 22.7 l1.Y

.I59_0?~3 _1~~. 1!9_1!~ 36. IQ_____23b ~1'~.!.58?.?.._2I~·-?__98_8 __ -83!~_1_!_6~67 - 2.3~ 24~_6_o_~_ ~3_. 5 L5 .1 l4. 4 23.2 21 . 9 2!_~~-~~

T5003 33 14.70 83 35.90 b30 979.5838 979.5987 -83.5983333 33.2450000 44.4 26 .7 25 . 5 24. 3 22.9 22.3 .ll. !l ,~·---• ·--··w-•-·-·-- ·-- --------···---·••• -- ·--·-·---· -·~~-·-_.._.__, _____ ••· . ----------

T'iQ0_4 __ 3~.1~--~_83 34.40 556 9J''!~_5916 ~19~9b~ _ _:J!~·?733333 33. 22Q..000_9 _ __ '!7 ·3 :n.7 30 .o 29.6 28 . 4 27.8 27 .1

__ '[5QQ_5_ 33 !~'!.-~__9. -~3 33.80 634 979._?85~ 979~98!_-8~._?.633333 33.23p3~ 33 47.3 L9.5 28 . 3 27.1 25 .7 2~hl 24.3

T5006 33 14.60 83 33.30 615 979.5854 919.5985 - 83.5550000 33.2433333 44.7 27 .5 26.3 25.1 - ---- ........ __ ., · ·----~--~ - -- ... - ·-···· . ·- ··- -- -- --- --·~ ----- ---- -·-- .... ··--- - - ·-· ·- -------.. 23.8 2~.1 22.3 ------

1~.001 33 14. 70 83 30.50 585 979.5865 -9 79.5987 -83.5083333 33.2450000 42.9 26.4 25 . 3 24 . 2 22 . 9 22.3 21.b

_ __L5008 33 13.40 83 30.10

T50Q.~ . .l3 J0.~7_Q _~3 35.70

!_5010_ 33 !1-2.0_ 8~_37.40

f.50H 33 ~;3~20 _83 3_6 ~_!.9

621 979.5861 9H.5969 -83.5016667 33.223.H33 47.6 J .J . 2 29 . 0 27. e ~~-- 25.8 l5. 0

5J.LJ.79 : 5._9_7..!_ __ 9_7_~-~s9E.z ~.?~· 5?.?..200.9. ~3. 17 ~~3~L_5.!.! 1 . 41.7 4 0 .6 39.5

33.1866667 52 .8 3 5 . 3 34.1 32.9 62.~ .~7~5.ill __?_1_~.59~_--:-.§3_._6~3~~~3-

.5.59 _9I9.59Q4 979.596o -83.606666 7 33.2200000 46.4 ~ 0 .7 29.6 28.~ ·-·- . ---- -----

3 8 .3 .H.7 :S6.9

31.5 3<i.Y 30.;.

27.3 26.8 2o. O

J50l2. ,33 10 .• _?0 83 ~~~QQ, _ _20? . ~7_9_._5_?.28 979.592 5 - 83.5666667 54.8 4).6 39.7 38.7 37.6 37.1 36.5

T5013 3 .3 10.50 _83_ 31.60 __ ___ 579 9J9. 5846 979.5929 - 83 .526o667 33. 175000G 4 6.2 29 . 9 Zti.8 27.7 2b.5 25.9 2~.1 - - --- -- -- - - ----------· -- ------- ------ -· ··- ------

TS014 33 11.20 83 31.50_ 598 979.5845 979.5939 -83.5250000 33.1866 667 46 . ~ JO .l 29 . 0 27 . 8 26.5 25. 'l 25.1

T5015 33 11.90 83 __ 31,~9.9. __ 5~9_...9~9.58~4 979.5948 -83.5316667 33 .1983333 47.1 3 0 . 5 2 9 .4 28.3 27 . 0 26.4 25.6 _____ ... ------T5016 33 8. 7 0 83 31.30 4_~.2- _979.590~ __ 979.5904 -83.5216667

489 979.5986 979.5910 -83.5933333

33 .l<t50000 45. 0 Jl.5 30.6 29.6 28.6 28.1 27.5 --- - --------- --- ---- -

T50l7 33 9_., 10 83 35.60 33.1516667 53 . 6 39 . 9 3 9.0 38.0 37.0 36.5 35.b

T5018 33 8.10 83 34.20 602 979.5851 979.5a96 -83.57oo ooo 33 .13soooo 52.1 35 .2 34.1 32.9 ---- ---· ::n .6 :n.o 3 0 .2

1501~ 33 7.30 33 31.70 ~bJ 979.5881 9 79.5d85 -83.5283333 33 .12166o7 43.2 } J . Z 29 .3 -- ----- ----- 28.4 27.4 26.S 26 .3

2 7. 6 2 6 .5 25.4 24 .1 23.5 22.8 T5g~0_ 33 5.80 8~ 3Q_.OO

T5021 33 3.2~ 83 30.30

~H _ 9?9•??~-~- 9?~~5_864 -83.50009.90 _ ::1_3. Q96?._6o?_ _ _''!}_•_t?

548 ~79.5721 979.5829 - 83 ~5050000 33 . 053333~ 4C . H 2 2 :. '!___ _ __ 2.!!_. '! __ -~-~ ~- - 2 ~~---· 2!_. ~ .. - 2 q __ • ?_-

T502.2 33 o.6o_ 83 32.0u 603 97:.~ .. 565~ 9~9.5793 -83 .5333333 33.0100_9QO_ 42..~ - ____ £5..· ?_ ___ _ £_4 .__?_ P_!4_ -

T50Z3 33 1.90 83 32.30 623 979.5659 979.5811 -83.5383333 33.0316667 43.4 25 . ') 24.7 l:S.o

T.SOll4 33 . 3.20 83_ ~3.50 ___ 6~4. 979_._ 5_6~_<;- 91~_.5829 - 83 .5583333 33.0533333 44 .7 L ~- · ~~ •• 26_. u __ .?.'!.~ ll

____ .J.S025 33 4.10 83 3Z~lQ ____ 6)3 _ 97~.5JQQ_~794~ll<tL-83._5350000 33. Qgt:1_3333 4~ . 0 ___ _ 23_. 3 __ 27.1 __ ?5~9-

__ uo26_ ~3- 5. oc _ s3_ n!'2.Q... ---~so_~n~-.2.178_ 97<.!.5_1:!.?] -83.5533333 33.0833B~ 47 . o

..... I.SQlr. .. :n __ 6. oo ... U . ~~b.1.Q. _ _ 't..?.L<r7.9.c~-!;IJ!l __ ~7~-~I?.L - (!_3 . s~-~3~33 33 . 1 0000 oo 42.. 3

_ __12_~8 33_J~~Q._ 83 ._37.30 __ ~99 9~~-~?957 9~<;1..!_5_91.~_ -83 .62! 6667 33. 160Q_OO.O __ 5 1. 0

_T5.0~ _3_J_ _ _ _7~!>0 _ _ jl3 39~ ~9._ 6l4_~79._~§.3~ _'?J9~-~d89 -;:83 . 6 L33333 3J.1 2666o7 ::il . 8

3 0 .7 29 . 6

2 9 . 5 2l:l .6

:.1 . 0 3 t> . C

J5 . 5 3 "•· 3

2 8 . 5

27.7

35 .1

3-'> . L

2h!.__ __ _ 21.5 _ ___ 2 0 .7

22.2 21.6 LC.8

23 .5 2 L.t:l 22. 0 __ .

. 2!t. ·~ - -~·J!. - -· . 23.C

27.3 26.7 b . 9

26 . '.3 26.3 2':i.7

34 . 0 33. 5 3l .6

.:>1. 1?. 31.l 3 0 .4

- - GIUWU.Y PROGUa --·-·-- - -- ·- ----·-------·--

~ LAJ LONG ELEV OBSERVED THEOR_ LQ~ LAT ~A rl2 .20 l:l2.3S B2 .50 'd 2.o7 B2.75 62.1!!>

JSQjQ 33 7.40 83 35.60 626 979.5800 979.5886 -83_.5933333 33.1233333 50.3 J2.7 1l.· -'-- 30.3 2d.9 28.3 27.;

JSOJ1 33 6. 10 83 37.00 630 979.5725 979.5868 -83.6166667 33.1016667 44.9 27.2 2o. 0 ____3 4. 8 ___ _ 23 . 5 22.8 22.0

TS~~ 33 5.10 83 35.60 601 979.5740 979~58~5 -83.5933333 33 .0850000 45.1 23 . 2 27.0 25.9 24.6 24.0 23.2

T5013 33 3.70 83 36.90 621 979.5702 979.5835 -83.6150000 .H.0616667 45.1 27.6 26 .4 25!3 __ _ 23.9 E.~_.i ___ a.._;_

T50i4 33 1.50 83 34.40 545 979.5694 979.5805 -83.5733333 33.0250000 40.1 24.8 23.8 22 .8 21. 6 21.0 L0.3

T50~5 33 1.00 83 36.20 477 979.5703 979.5798 -83.6033333 33.0166667 35.3 21.9 21.0 20 .1 19 .1 1 8 . b 1o.o

T50i6 33 2.50 83 35.50 603 979.5676 979.5819 -83 .5916667 33.0416667 42.4 25.5 24.3 23.2 21. 9 21.3 20.5

T5.0i7 33 18.80 83 45.60 693 979.5534 979.6043 -83.760000.0 33.3133333 14.3 -5.2 -6.; -7. 8 -9. 3 -10.1 -J.0. 9 ----T5M8 33 18.70 83 48.40 656 979.5507 979~o604.2 -83.6066667 33.3116667 8.2 -10.2 -11.!> -12.7 -14.1 -14. ti -1:5.o

TSOJ9 33 18.50 83 50.60 533 979.5525 979.6039 -83.8433333 33.3083333 -1.3 -16.2 -17.3 -18.3 -1Y.4 --------- -2o.o -20.7

T5-MO 33 ;zo. so 83 52.20 571 979.~460 979.6067 -83.8700VOO 33.3416667 -7. 0 - 23 . 0 -24.1 -2.5.2 -26.4 -27.U -27.7

T5~~1 33 17.60 83 52.40 647 979.5421 979.60.27 -83.8733333 33.2933333 0.5 -17.7 -18.9 -20 .1 -21.5 -22.2 -23. 0

__I5G~2~. 80 83 51.80 565 979. 54_~~_2 79. ~002___:-83._8633333 33.2633333 4.0 -1.2.4 -13.5 ----------- -14. <> -17. 2 -15. 9 -16 .!>

~3 _ ~!_~o. 7_g__~_~5.3_o __ ~l_!_ 979. 55QL~?.~·6Q.~9-=_~}· ?55()_goo 33.3450000 11.7 -d.7 -10.1 -11.5 -13.1 -13. 8 -14.7 - -------·- - ··-------- -- ·---- ·.·

T~ 33 22.10 63 45.30 716 979.5494 979.6089 -83.7550000 33.3683333 7. 9 -12.2 -13.o -15. 0 -16.5 -17. 2 -1 d.~

__!_504'?-..~~~2.30 83 48.70 630 979.5484 979.6091 -~2._-~_!~~~7_33~...:!_.!__6667_--=!~-- _ _ :.~-- . :-l~_-4 ___ _ :-~-- -~?__2_~9 -23.o -24.4

_ _!~~~. ltll _~j..Q_9_ __ !B 50._]_Q__582~:J.9.5~62 ~7~.60__!~=8].8450000 33.3500000 -6. 1 -22. !> -2 3 .7 -24. ~ - 26 . ;_ -26.7 -2"1.4

T5046 33 20.70 83 48.70 480 979.558B 979.6069 -8~~8116667 33 .3450000 - 3.0 -16. 5 -17.4 -18.j -U.3 -19.1! -2G.4

____ U0~7 33 1_~. 70 83 -~9.40 _ __?.~3 979_~5~~- ~7_<!_.6014 :::83.8233333 __ -~~!_2783.:s33 _.<?~ - ---- ~ ·_ 3 -1 0 .3 - tl.4 -12 . S -13.1. -U.ti

_ ___ I_5048~__!2_. 60 83 48.40 493 979.5616 979.59J.'!__:-83.8_06666_1___~.2600000 8.1 - 5.8 -6.7 -7 .7 -6.7 -9.2 -9.9

--·"· :J'.tQ6...? -~~ ~6·-~L.H~.!_O __ g4~79. __ 5_61_!_279.6Dl3_::8~-~ 78~q.ooo .2=!.· 27fJ6_66J 9.u -4. 9 - 5 .9 -6.9 -a . o - d. o - 9.3

__ TS060 __ ~~-l 6• 2'1 -~~-45~~Q __ -~~~- 'l79~665 9]9.6Q07 -8~. 163~333 33!_2_:7.QQ_9_00 _ _ !2 .!..'! . __ --=-~. 5 - 2.5 - -~ -4. 5

T5061 ~3 1.40 83 44.7G 363 97~.5891 979.5804 -83.74~0000 33.0233333 33.9 £3 .1 23.~ 22.3 - --· -- ·--- -- 21 .:l

. -· J5\».Z,__33 ___ g.J! ~0 -~;l~h!Q___ 53_! .2J9. ~b8~- --~n_9 . 5 7..21> -S_h 79~666 I 33 • .Ql3~H? ___ 2'?..d. 24.4 23 ~_! _ ___f_Z..!.L__ 21. 2

_ J5063 _3~ _.9. 3Q 8~- ~I-9Q ;3~ - 9~9. 5?48 _9?_9.5789 -83.6316667 33. oos_oooo __ 3_1 .1

~~~ ~3 ~20 83 ~9-~0 _ ~82 9!9.5666 97~~5801 -83.6583333 33.0200000 4l.L

24 . 8

Z4. 9

2<t.O ___ ?3_. 2

23. tj. 22 . 7

__ U~.i _33 ___ ! _<!_o..Q _ ,!1_3_ ~8.20_ -~.Q___219_. 57?_!_9_I2._.':>§~ . .-&3~-~.3~666 1 33. osooo oo _42 •.L .. -l:.!?..!.-_5 ___ 2 5. 4 24.3

0.~~ - 33 _ _ _}~ 10 83 40.5Q_ 5Q6 ~79.5 724 . 979.583.!) - 83.6750000 33.0o1oC>67 41.9 26.0 24 . ~ Z3 . b --*- -- ---_ T5 2Q~ __ 33 2. 90 83 41.50 451 ?l9·2J84 979.282~ -d3.6916667 33.048333~ 3~.4 25.7 24.9 24.J

22 . z

Ll.4

23 .l

a .o

a .c

- s . o -!>.C>

21.1 20 .7

20 .7 ZO. J

Zl.d 21.2

2o.a 20.1

.1~ ~ s _ ___ L 1 __ • ~ __

a. J 2 1.3 --- -- -------

22.b 2L.O

·- -~1-l¥ PROGR.UI

~ .... LAT._ LQNG _EllV ....Q~Ii!.l-V.~D __ It!.E.QR J,..ONJ> LAr f-A - -· .8.?. ~ ~jg-~3.2_, _ _ti.2.~5. :) o_f_:_6J .• _B<: . 7':> az.s':>

2.! . 9 --- ~? - 0 --~~ 437_979.~J7.!L'U'!.•5624 -83.713,t333 ~.3!04iJ33~ 36 . () ___ 2}!.7 T5i05_ 33 _ _ ~.._90 83 .42.{1Q 20 . o <:0 .1 - -- ---~·-·---

I.~ 20_1>_ ~3 - 5._30 83 - 44.._ 50 528 _ 97~~§?6B _ 9?9.5857 -d3.J~lo667 3}.08o333j ~o.7 £).~ . -~!.!· .. ?. _ 2} -J_ . -- 22.7 22.L 21 . 5

n2Q7 33 3. c;o 83 43.70 479 979.5776 ~79.5838 -83.7.283333 B.!..oo5QY.9.SL. .a~!ll 2 5 . 4 £4 . 5 2 3 . 6 ·- _p • ? -. -- 2 ~ • 0 .21 • 4

~-T22Q..8 33 5. U> 83 40.l.Q_ _ __?85 9.1_~.5739_ 97_~..<!.?855 -83.668?._33} --~3_._oaso uoc. '!l·L~·c 2?.9 24 . d ·- · --· 23 . 5 22 .-1 ZL. 2

~~-~~·L_ _ __ 3.l o 4 30 . 3 T52Q9 33 6.90 83 40.60 465 979.5895 979.587~ -83.6766_6~1__3_3 . !.!_~00_9Q 29 .5 29.0 28.4 ·~--·- --·

T5210 33 6.70 83 38.90 595 979.5782 979.5877-83.6483333 :B • .Jllo667 ~~-5 £9.8 28 . 7 2 7. j __ _ 2~ !.2 25.6 24.'J

T52ll 33 5.70 83 42.50 512 979.5802 979.5863 - 83 .7083333 33. 095J_()OO 4 2 .1 .L7.7 26 .7 25 . 7 -~~ ~ 24.1 23 . 4

TS>212 33 7. 20 83 lt4.70 427 979.5831 979.5d64 -83. 74500QQ__~~ · !_200Q_q_9 19.4 34.9 22.9 2£ .1 2 1. 3 ----------- 20 .4 19.'1

T5067 32 58.80 83 36.50 498 979.5687 979.5768 -83.6083333 32~989000£___~~ .7 24 .1 23 . 8 22.8 21 .8 2 1.3 20 . o

T5069 32 56.60 83 36.40 490 979.5646 979.5738 -83.6066667 &94333 33_ 36 . 9 23 .J. 2.2 . 2 Ll.3 20.2 19.7 19.1

___I2!11.Q_32 . ~4. so 83 36.50 - ~.Y.L 979.5643 ~79.!.? .?.1_3 _-8~_.60833_3L 32 •. ?13~~~ P!.~..1 td.l3 1 8 . 0 17.3 1o.4 16. 0 1:) . 5

TS07l 32 53.it0 83 36.10 496 979.5546 979.~~94 -=.!!_~ .6012_~~--g-._!!~000 00 3 1: 8 17.9 17.0 lo. O 14.9 14.4 D.8

T50.7L~2 52.60 83 34 •. 70 32.8766667 27. 8 16.3 15.5 14. 7 - . . . - - · . ---· . -----408 .~J9.5~7J ~79_~5~8_3 -_~3-~_78~-n~ 13.9 13 ... 12. 9

T5073 _3_U4._00 83 31.50 658 979._?_~3~~?~?}Q~- -8~.5250000 32.9000000 3~.3 l ~ . B 1 5 . 5 14.3 ·- --~---- - ---------- 12. d 1 2 .2 11.3

TS014 32 55.80 83 30.10 530 9?9.5584 979.57?1-=~3 - ?016667 32.9300000 35.5 L0 .7 1'1.1 1 8 . 6 17.5 17. 0 16.3

T5075 32 51t.20 83 33~90 509 979.5570 9 79.S705 -8~5650000 _ 32 . 9033333 34.4 20. 1 19 . 1 1 l:l . 1 17.0 1 6 .5 1j.9

____ IS0~6.3 . .L55 • .9.0 __ 83 _ _l3._IQ__ -~ l.Q__'l79!..~65~ 97_9. '2.7 28 _ -~~·~l?l_6_66.L .2.? . 93166_6 L .. l 1_. _L 1 :J . o 18 . 8 18 . o 17.2 16.7 16.2

J59]7 32 57.20 83 32.60 555 979.5 __ 584 979.5746 -,!t-h~_3_3333 32.9533333 36 . o 20 . 4 1'1 . 3 J. o .3 11.1 16.5 1~. 8

--~078 3_l~~-~ 8D __ ~J._3_1~80 ____ b_~n9!.5605 . 279.57~8 .. ~~~· ~466~-~.L-?f .. ~!!OOO_QQ__40.7 23~7. 22 . S 2 1.4 20 . 0 19. 4 l d.6

___I~l..9~9...,J!!l._!!_3_37.~Q. 443 979~57_2_1_97!t_~_578~ -83.~~33333 _..l]. .9966o6L 36 .2 ~3 .1 22 . 9 22 . 0 21 .1 20.6 20.1

_. .. T~.QSQ.JL.~-~-~-~9.-§..L~~~ - .?J.? __ 9]~.!..59..r?.. 97'!.51.ll_;-§.~~5.?QPOOO _3_2!99.§]1.3..-L....l.2!9_ ·- .f.'! • 7 2 j . 7 2 2 . 1 -~ 5 --2 1 • 0 - 2 0 . 3

.T5.081 32_ !>9.-5.0 __ 63_~0 .• 2.0. 5.11 'H9-~656 979~5778_-~_2 .503.}~? 32 .991 6667 ~5. 9.

'U08.Z .,32 58.10 83 34.99_ 492 979.5675 979~5759 - !H.581666 7 32.9683333 J7 . 9

T5011.....JL~9.70_, .. . 83 .ol9.-~9 __554 2.!.9.~5653 979-!fl:fol. -8~6566_66 ~ - 32.9950000 39 .4

r5o&4 32_~8.90 83 39.ao 480 979.5637 979.5770 -83.6633333 32.9816667 31. 9

T5085 32 58.10 83 38.5Q 544 979.5648 979.5759 -83.6416667 32 .9o83333 40. 1

T5086 32 52.90 8~ . 37.70 489 9!9.5533 .979.5687 -8~.62&3333 32.&8166o7 3C . u

T5087 32 54.30 83 39.60 311 9~9.56d3 919.5706 -83.6600000 32 .9050000 26.9

T5088 32 54.00 83 38.10 503 979.5555 979.~702 -83.6350000 j2..90JGOOL JZ.6

2 ~.!..L -~Q ~--1 '!! 6

24.1 2.> .2 22.2 - ---

2 ~- b - _?_f.~ .? ... _ _ ,__2_1 •. 7

1~.4 17 . ::> 16 .0

24. ,, 23 . o n.o

l?oO 1~.9 1 5 . 0

13 . 2 17.6 17. I)

1~.:> 11. s 16 . 5

1&. ::> 1 8 . 0 17.3 --- ----21.2 20.7 20 . 0

_ -~~--. 19~ _ .. !.~~-L--~-

1 5 . 5 15.1 1 ~ .4

21 . 6 2l.:J 20 . 3

l3 . 9 13 .~ lL . b

16.3 16.0 1 5 . o

l S .4 1<t . 9 14 .3

t:..ll.Awl TY PRn,;.JL&M

_ ___IlL lAJ LONG REV OSSER,VEO THt;~--- . .Jc.QJiL _ _ __ L~L __ _ _t~ ___ __ ...§?~ .. a.c. 35 a2 .50 a2.61 62.75 ez. e5

_ _1_5!Yi«l -~~L 6.5· ~0 _ ~-3 _J 8,40 _ 468_ 9_1_9 , 562~ ~7_"!_~5 720_ :-113 ~ ~40090_0 __ 32. ~? 1666 7 .. H . 4_ ... 2J .. • 3 __ 29.!!!:.._ ___ 19 .. 5 ~~? _ ___ 18 ... '?.. ___ 17. 4 _ _

. _.I~Q90 .l2_~h7P _ ~~ ~8. 8Q __ 546 9]9_, ~630 _979_.5139 -83. 646_6667 _ 3£.9450000 4 0 .4

15081 32 sa.2a 83 39.90 604 979.5615 9J9 .. 57~o -8~-~.§J• ~Qp_o_g _ _ g_.9JOqoq_o_ fu.~

T5092 32 59.30 83 44,30 43Q 979.~1}~ __ 9!9.5775 -83.7363333 32.988333~ 36 . 3

_ ___nQ9_3 32 ss.&o 83 42.20 339 979.5731_979.2_?2?: . ...=8.J_.7033.]~3 32.93ooouo 32 . J

_ ?5.1 ___ _?_!!_._Q_ ____ -?_~_.o ____ 1.!.~ __ .21.3 __ £.~

25 . 4 24. 2 23 .1 21.7 2 1.1 2 0 .4

24..!? ___ 2~~~---- ZL~-~---~1 . 7 __ 21.3 _ _ 20 .1

22.8 22.1 21.j 20 .7 20 .4 20 . 0 - ------ - ·-~--- --~-- ------------1~094 32 52.60 83 40.00 345 979.5615 979.5683 -83.~66666_7 }_2_._§1f!~~~]__ 22..!_6 __ _ __!,?~- ..!2.:_3 ____ 1~·.2. . 13.9 13.5 13.1

T5095 33 14.9D 83 47.50 526 979.5613 979.5989 -83_!.l._91 666_?__2_3_:-~~~333i_.!.!_~8 -2. . 9 - 3.9 -4.9 - 6.1 - 6 . 6 -7.3

T5096 33 14. ~ 83 45.60 635 979.5638 979.5985 -83.7600000 33 . 24333~3 25 . 0 1.2 6 . 0 4 .7 3 .4 2 .7 1.9 - --- ·------T5097 33 14.00 83 46.40 641 979.5615 979.5977 -83.7733333 33.2333333 24 .1 o .1 4.9 3 . 6 2 . 3 1. 6 o.H ---------- ---- - ---·- - ------

- _!_50~8- 33 13. ~ 83 48.50 5 _10 __ ~9 .• 560~]J~5~7~ -1!3. 80833~ 3 33. 225 00 00 11.4 - 3 . 0 - 3 . 9 -4. 9 - 6.5 -1 -~ ·------- 6 . 0

_ T5_Q?L-!3 __ ~2._7~ 49. ~.Q_- _ 5_1! _9I_~ ?_?_8.1_21_:!9 • ~959..=tl3!_818~333 ~3 • .2116667 10 . 8 - 3.7 - 4.7 - 5 .7 - 6 .8 -7. 3 - 8 . 0 . --- -·---- - ----

T5100 33 12.50 83 48.70 525 979.5620 979 . 5956 -83~8116667 33.2083333 15.7 1. 0 - c.o -1 .0 -2.1 - 2 .1 - 3 . 4

415 979.5_I4'j ~7_9 . ~9'!? __ -:t.l~ - ?~;3?_~33 33 .1966 667 13 .9 7. 2 o . 4 5 . 6 4.7 4 . 3 3 . !i ~_UH 33 __ ..!._1.80 83 47.60

T5l02 33 11.40 83 46.80 500 979.5774 9?9.5941 -83.7800000 3).190000L 30 . 3 1 6 . 3 15 . 3 14.4 13 . 3 12 . 8 12.1 -----. ·------

TS1Dl 33 10.20 83 46.70 601 979.5699 979.5925 -83.7783333 33.1700UOG 34.0 17.1 15.9 14.8 13 . 5 1 2 . 9 12 .1

TSl04 33 9.20 83 46.50 509 979.5764 979.5911 -83.7750000 33.1533333 33 . 2 18 . 9 17. 9 1o.9 1 5 . 8 15.3 14.7

T510S 33 17.00 83 52.80 670 979.5396 9)9.6018 -83.8800000 33.2833333 0 . 8 -1 8 . 0 -l 'i .J - 20-.6 - 22 . o -22.7 - L3.o

T5106 33 lS.60 83 53.80 605 979.5437 979.5999 -83 . 8966667 33.2600000 0 .7 -16 . 3 -1 7.4 - 1a . ,:, -19 . 9 - 20 . 5 - 21.3

T5l07 33 15.40 83 58.00 646 979.5342 979.5996 -83.9666667 33 . 2566667 -4.1 -22 . 2 - 23 . 4 - 24.7 - 26 .1 - 26.7 - 27.6

J5108 33 16.00 83 59.40 701 979.5309 979.6005 -83.9900000 33 • .2666667 - 3.6 -2..;.3 - 24.5 - 2.6. 0 -27.5 - 28 . 2 - 29 . 1

T5109 33 18.4Q 83 58.90 683 919.5351 979.6038 -83.9816667 33.3066667 -4.4 - 23 . 6 - 24 . 9 - 26 .2 -d. 7 -28 . 4 - 1.9 . 3

TS1l0 33 20.80 &3 59.60 657 979.5357 979.6071 -83.9933333 J3.3466667 -9 . 6 - 28. 0 -2.9.3 - 3 0. 5 - 32.0 -32 . 6 -33. 5

T51l1 33 21.6~ 83 53.90 616 979.5400 979.6082 -83.8983333 33.360000 C -1 0 . 2 -L T.~ -1.6 .7 - 29. 9 - 31. 2 -31. ~ - 32. . 6 ------------ ---·-- --- -- - --T5112 33 21.20 83 '>6.20 688 979.5377 979.6076 -83.9366o67 }3.3533333 -5 . 2 - 2.4.5 -25.8 - 2.7.2 - LB .o - 29 .4 - 30.2

T5 113 33 22.20 83 54.90 541 979.5480 97'!.609_9_..::_!13.9150900 33.370000C -_l_Q . ~ -l 5 . 3 :2o. 3 - 2 7_:-4 _ _ _:Ld_. _5 ___ _:-_2_2!!_ _ -L~..!.~-- --

T5114 33 Z1.8Cl 83 53,00 5b6 979.5449 979.6082 -83.iHB3333 33!3600()_00_ - d_:-2 -2/~.o - 2.5 . 7 - 26_~ - 28_.!.!:._ __ _ ::-~~-.. - ::-~~~!> __

15115 33 15.&0 83 56.10 613 979.5399 979.6002 -83.9350000 33 .263Jj33 - 2.o -l 9.1j - 21 . 0 -22 .2. - 23.5 - 2 4 . 1 - 2-.. 9

~_ll_li~ 83.JA~115 _979.5333 91_9.~02L.=_8_3~3;i_OOQQ__:n ... 2_8_t.(,6~--- 1-6 -2.1 .6 -23 . 0 - 24.4 - 25 . 9 - 26 . 6 -27.6 -- - - ·--···- -TS117 -~~-~~.! ~Q__ ~ 54~30 631 979.540S 979~6038 -83.905~000 _33 . 3066667 - 2. l. o -2£ . 8 - 26 . 9 - 24. 0 - l5 .4 - 26. 1 - ·------- ---- ·------. - --

'"RA¥1lV PKOGU ..

_ ___ 4t10__W lONG ~i,..~'(. O~!;~V~.!>- ... . -T!:lsQ!L . __ _ !:._O~G . - · . L_~J_ ··- . _FA •.. ;g_._~- ti2~ ~- _az . 5Q •. -- - -.~~7 - ·· B2. 75 .?_? · ~~ _.

-2 d . 4 a . • -.---·-

_ .. UU8 33 l8,t_c;Ml_~_.56.5.0 608 __ 9_?9.2_;.1.0._ 97_9.!>_04_5 __ ~83.~41.666 L _n_._~~5_00_0() .. ::-_6. ~- __ :-2 3..!.~_-24..!.? _ ·---~~~----=n-!...0. _ ____::_2]_. 6

. _T5.ll.~Lll .. 20 • . 90 -~3_H..._~.Q_ _ _ 7 ~3_979."-~J't5_<)_19. 6.0oQ_:-:-8J.• 9~~-QOQQ. J.~...! ~-l~_33_3~- _ _:_e..! 5 __ -23 !§._~2~._2 -l6 .3 - 2d. 1 -2B. d -2~ . 8 -- -·- . --- ------·-- ~ -·- ··- . ---·- ..

..... r.~uo 33 19 •. .10_8~- 52.90 638 979.5412 __ 97~~~02~ . ..::83. 8 .8_1_666_7 _ _ _33.~-~2~~ 3 32._ .. :-..:+...!l.. - 22.3 - 23.5 - 24.7 - 26 .1 - 26.7 - 27 . o .. - -- ~ ... ·-·-- - ..... .. - --- - -·-T5_l31 33 1_4. :JQ_ ~~- 43~3Q_ . _63J_'!.l9.~_ 5.J.li.. 9?9.598 7 __ -:_83. 7 216667 .. 33. 24500 Q.Q 32 - '! ·--~~- __ _!}. '! __ · - -~2. 2 10 .!:1 10 . 2 9 . 3

._ I~..Ji2 .. 3J_ 1_4.10 _____ ~_! 40.~Q__-~_5_2_~?~·.?..15<L_9_19~5981_::-_?3..!.f?81666?_~~!245oooo _ _ }?_·! .. _ 1~.4 U:l .1 1&.\1 15. ~ 14. b 1 3 . ~

T5l~ l't.JO 83 39.00 'Hil. 979.5 862__2]_2..!..?._?18_ -t13_. ~50~H~.Q.O_ .2}.!..~350..Q.QC _ .~ ~1.._. _ ___£i:._!!_ -~~ ?_-·- -~~~ 6 22 .4 21. 8 21.1

T5124 33 13.40 83 lt0.40 660 979.5791 979.~?.§2._ -83 ~_673p33___21·2233333 44.3 25 . 8 24 . 5 23 . 2 n.t~ 21.1 20.3

_nu~ 13.30 83 44.8_0 _ 596 979.5754 9_79 ._59~_7- _:-_83_~_7'!6_t?.6o7 33.2216067 34.7 1 8 . 0 1 6.8 15 .7 14.4 13. 8 13. 0 . ·- - ··- ···---- -- ·- ----·-

rsll5L~3 12.4o a3 42.7o 612 9~9.5773 979.5?55 -a~~~llo~~r 33.2066667 39.4 .. ~- . . ... -~ ... -- --- L2 . 2 21. 0 1 9 . 8

33.210000C 46.4 23.R n.c. 26.4 __ .r~~6 ~3 ~~- 6Q__ _8_3_. ~9-~Q _62~ _ _J~! 5833 _979.5958_::._~3 .663333~ --·-- - · ----·- · --- -- ---- - ·---- - - - - .

T51J7_ 33 1~9~ 83 38.20 584 979.5876 979.5950 -83 .6366667 3 3. 2000000 - - 47.6

_...J:5.!.~.3~ __ 1l_._!Q -~-~1! .~Q. ___ 4?.~ .. ?~.~- ?_!i90 - .? .! 9.594 7 -83.6883333 33.1966667 ' tO. 8

T!i_l29 33 11_. b() _ _ . . B3_ .44. 70

_T51JO 33_ 10. 9Q._ 83 44. 30

605 979.5737 979.59 44 -83.7450000 33.1933333 3o.2

558 979.5793 979.5934 -tl3.738333~ 33.18166o7 38 . 3

31. 2

25.9

l-). 2

22 .7

~~13L.13_l.Q.~~~-~2.9Q __ 5~a _2!_9.~8l?~ 9~9!59_33 .::-~3 . ~5ooo Q_ ~~~ !~Q~Q2<: .. 43 . 4 28 . 3

30 .1 21J .9

26 . 0 2.5 . 0

1 tl .1 16 . 9

ll . 6 2J. 5

27 . 3 26.2

18 . 5 17.9 l7.J.

l5 .1 2 4. 4 23.6

21.7 27.1 26.3

24 . 0 2 3.~ a .u

1 5 .6 15. 0 14.2

19.3 1 8 . Cl lo.1

2.5 .1 24 . 5 z., .&

·-_!·u~ _3J_1o...!'_~<L_1!_3 .... ~'!.·..§Q_ 6oo _ ~7_9..!' 5841 979~59~_2 ~83 . 6633333 3]. 1~~666?_ 48.3 3 1. 5 30 . 3 29. 2 2 7. 9 21.3 26.5 . - - - .-- ·--- ·---·- --- - --- - ·- . - ----- - --··-·-- ···

_ TS~~3 __ 33 _10. ~0 - ~.3 . . ~~!...90 61() _?79.585_8 9 7'1.!_~926 _:-83.6483333 33 .1716 667 51. 1 3 3 . 8 3 2 .7 .H.5 30 .1 29 • .5 2!3.7

. .. . UJ._3~L.ll__l!~ 9C 83 40.89--2.2.L'H_9.58_l8_.9 7 9_._59Q.7 -8~_ ._68ooooq 3~~ !'!~ J3~L. ~6 · '!.. -.- · ~-2--~~.:.1 _ __ 22-!L -- --.~~· - · 26.1 -~L -

33.1583333 3~ .1 24. 4 2~ . 4 22.4 ---- -- - ------·- --- ------ ·- - - - . _ TSBit\,33 9.50 83 44.1_!.) ._ 524 979.5!!.!}_ 9 7_9.5~15_ -83..!7350000 2 1.2 2 0 .7 20 . 0

T~135 33 7.80 83 43.70 26. 5 25 . 3 24.8 2~ . 1 ------- -~27 979. 58_~9 9 7 9.589_2--=!i3• ?2 833_33 __ 33.!.!_3.QOOOO -~~-~~-- 21 . 5

.T5U6 33 1 •.. 1o 83 3_7 ~J!.Q.__6. 12 97'!!._5_1!~4__979.!.589.Q .. ::8~ . ~~ogooo ___ J.3.! 2.133~33 .. 5l!.:L · -.?~_7 __ . ~ 32 .4 31.1 3 0 .:, l9 .7

T5 U7 33 5. LO 83 4 7. 70 .. 433 ~]9._?_ 74 3 9 U .• ?.~.5,5_:-__83 . _!_950 qQQ 3 3 .__Q_8.S_QQ o Q. l9. & ____ _ ....!..!~~~~ ~- _..!._?_~ B_ ·- .. . .!.i!.~ ___ 14. 4 ___ ._Q~ ~·-

_!!Ji8 _ll.__~-· 80 83 48.10 502 ?_79. 567S ... ~J9.!5d.E___:-83.Jl_0..!..66o7 33.0633333 3 l.J - ----·-·----~-----·

17.2 1 6 .3 15 .3 14. 2 13.7 13.1 --- ·---·- ·- ·- - --- -- --- - - -· -- -- ·---· - -- - --- .. -!5139 33 4. 80 83 49.70 516 979. ~619 979._5851 :-83. b.2833.3~-- ~3...:.Q80Q~QQ_l2...:_!._ - ·--~ o.o 9 . 9 8.~ 7.3 7.J ----- - -- -- --T5Ht0 33 5.40 83 50.40 550 979!.157"!.._~?_~. 5859 _-l!3_.84000QO _ 33 .09 000~ <!_ -~3 . C> ___ .. -~·.!· -·--·~ 6 . 0 4 . tl 4 .J ~.b

T5l•l 33 7.10 83 49._3_Q__. lt4_D 97'1~ 5791__9_]~5§§? =.~3. 82166~7 33!1!_3_333_3 .. _23 . 3 __ ___ _!?_~ _ _ .!.!!~ 1 _ 9. 2 8 .3 7. 6 7 . 3

T51•2 33 9.10 83 50.10 ~16 979.5645 979.5910 ~§}.:835_0090 . .2~~ 15! ~_6_~_7 . . .!?..:.I..... ___ l. u __ __2_:_£._ _ - o . o -- · -=~ .:5 ,.... -1. 9 -l.~

~143 33 8.30 83 52.50 ?~. 'U~_J__?l_8 __ 9]_9....!_')899_.= 83 . 8 7 50.QOO ~~. l3_8;B;3L. .!~-· 3 ._ ··- _:- ·)-~ !l _ _ __::_! . 8_ ... __ - 2 . ~--- _ -·-·-- -4_. _(]_ ·--· -4. ~ - :> . <:

_lli44 33 8 .51: 83 53_~~-0 __ ~99_ 979. 546 ~ _979~5?9 1 __ -.!!_3 .~9!!3333 33.141 &&6 7 L3 • . J - ~ - !3~ - - 5 . 1.) - 6 .1 -7.4 - <> . 'J - cl . d

GIU.ltl JY PROGR.Ut

MD LAT LONG cLtV OBSERVED THE OR LONG LAT FA dL. 20 tl2.3 5 BZ.50 82.67 _j)_2 .72.__E . 8 ~

- o.9 15145 33 10. 8.Q_ 83 50.70 4~4 979.5585 979.5933 - 83 ._845000_0 _ .H .I,_dJOuOO_ 1 0 .7 - 2 . 9 - 3.3 -4.7 -------- -- ---- - 5.a -o.3

1.2_!__~- 33 _ 11~.J.Q.J.L21! 1o

15147 33 13.40 83 50.50

590 979.5478 979.5937 ::~3_._8B5oooo 3J .185GOOu 9 .o -1. 0 - H.1 -~. 2 -1C.5 -11.1 -ll. 9 .. --- -----·-------- .. --~- --· - - ---- - .

536 979.5561 97945'j69 -83~84t~_66..l..__3~!2233333 9 . -'> - 5 . 1t -o.4 -7.~-- ---~- -9 .~-~.~- --

·-~I5J~8 __ 3l__!~!ito 83 51.40 528 979.5549 979.5983 -83.85661>67 33.2400000 6 .3 - ~ . 5 - 'i .5 -10.5 -11.7 -12.2 -12 .9 --- ~ --· - ----·- ---~J '!~ __ 3_~ __ h_~o 83 46.00 471 979.5718 S79. 5804 -H 3 .7o6666 7 --·-·· ----- 33 . 0 23 33>3 - -

35 .7 ,z . ., 21 . 6 20.7 1<i.7 1d .o L., •..:

~5150 33 1.80 83 47.50 4 9o 979.~684 9 79.!>80~ _:_~~_._791_?6?:~--3_J.! OJOOOO<.. 3 4 .1 20 . 2 1 9 .~ ' __ , _ ----- -- 1ti.3 17.2 16.7 lo.1

15151 33 1.70 83 49.90 531 979.5610 979.5ti08 - 83 . &3 16667 33 . 028333~ 30 . 2 15 . 2 14. 2 13.2 12 .1 11. s 10 . ts

151~2. 33 2.60 83 51.70 5 88 979.5544 ~79.5820 - 83 .H6 loo67 J3 . 0 4 JJ33l 2 1.1 11. 2 10 . 0 H.9 7.1> 1. 0 u.j -----·--- -15153,. H 3. 30 83 53.60 625 979.5488 9 79.5830 -o3.8933333 -- - - ----. 33 . 05~000l 24.6 7. 1 5 . 9 4.7 3.3 L.l !.9

529 979. 5566 979.5840 -83.8650000 33 . 0 66 oo67 22 .4 7. 6 6 . 5 s., 4.4 3.8 3.2 T_5 15 3j, 33 .. __ 4. p.Q_ ~-·51. 90 ----·-- ---------------------· 83 52.~0 4 3 9 979.5609 979.5866 - 83 . 8 76666 7 ------- ----- 33. 09d3333 ·-· J.5154 33 __ s. c;o 1~ . 6 £. . 5 1.6 3 . 3 0 .7 0 .2 - 0 .3

_ ___!2!.?2_ __ 33 __ _2_. 30 83 55.80 615 979.5459 979.5857 - 83 .9300000 J3 . 08d333J U l . O '} . 7 - (' .4 -1. 6 -2 .~ -3.o - 4.4 ----- . --- __ ._ ___ ~---- --·- · ---·~ --- --15156 33 6. ac.. 83 56.60 534 979.5492 979.5878 -b3.9433333 33.1l3333j u. o - 3.4 -4.4 - 5.4 - 6.6 -7.1 -7.d ---- -· ··-·-· ··" --·

578 979.5423 979.5897 -d3.980COOO 33 . 136b66 7 6.9 -~.3 -1 0 .4 -11.5 -12.7 -13.3 -14 .1

582 979.5455 9 79 .5o96 -83.94333j3 33 .1 3500GC 10.7 - 5 .1 - 6 . 8 -7.9 -9.2 -9.J -10 . 5 ·----- --- .. ·- -. . -· ···- - - - --·--------------

T5167 33 8 . 2() 83 58.80

.____!2_!~8-.33 8. 10 83 56.60

15168 ~33 _ 9. 6.9. .. _!!~- -~ 7_. 40

T5159 33 12.10 83 55.30

642 ~7~~~~~£ _ 979.5917 -83.9566667 33.160000C

5 17 979.5454 9 79.5951 -83.9216667 33.2016667

o.9 -11.1 -12. 3 -13 . 5 -14.9 -15.6 -1u.4

4. 6 -11. [) -1 2 .7 -13.<;1 -1 5 .1 -15.1 -1o.4

T:51_~.Q...l.L!.~-~O 83 54.70 ~-~?_979.!..~431 .1..7_9 •. ?_9L6 - 83 . 9 11666 7 33 . 17looo 7 10 . 2 -7. 6 - u. a ·--- ------------------ -Lo. o -11.4 -12.1 -12 .9 ·------ ---- · ~ -~ .. -.. ~--~-- - ... .. - ... T5161 33 l2.6C 83 52.80 4H5 979.5 54 5 979.5958 -83.o800000 33.21000 Gl 4.3 -~. 3 -1 0 . 2 -11.1 -12.2 -12.7 -U.j - ·-·-· ~ ~ -- -· ------ -

T5162 33 14.80 83 5h60 5 ?6 ~]9. 546~ '179.5988 -83.8933333 .B .~46oo67 -14.4 -1 5.5 1. 8 -16 .o -17.8 -18.~ -19 .2 --- ------- --------------·--T5163 33 ~.3~ -~9 .... J:!~ __ 5.2_~}0 _ .. S_o;S_ <J_79. 5444 979.5972 -83.9216667 33.2266667 0.4 -1 5 . 5 .... ___ ·- . - - -- .. , __ _ -1 6. 6 -17. o -1 8 . Y - 20 . 2 -19.4

1__5164 ~3 . ~?.50 83 ~7._ ~(). _ ~L'!_ 979.53~6 979.5956 - 83.960_0000 33~20bH}~_.=}~~- -1~ .5 - £ 0 .7 - 2 1.~ - 23 .3 - 23 .'1 -l4.8

T5165 13 14.10 83 59.90 608 979.5361 9 79.5978 - 83.998 333j 33 . 2350000 -4.6 - n . o -L2. H -23.9 - 2 5.~ -25.9 -26.1 .. -~- . -·· --· . ·- ----~----~ ---------------·

r_,_~b6 33 _.11~2o_ 83.....?7~~o .. _ 631 _97'!.:.538 '7 9 7'!~5939 _-:bh95666~7 J3~1~~<>_o~7 ___ ~+. 2 -U. 5 -14.7

T5~67 3~ 5.60 83 58.70 65a 979.541 2 97 9 .5 8oL -83.97833 33 33.0933333 16.9

T5168 33 4.30 83 57.30 679 979.5417 9 79.5844 -83.9550000 33 . 0 71o6o 7 2 l.L

-1. 5 _,. 8 2. 1 c. . 8

-15.9

-4. ::>

- (;.:)

-17.3 -17.9 -1o.7

-5.5 -6.1 -7. 0 -- - -- ----1.9 -z.o - 3.:)

___ .J~I4.2. .. J3 ...7- .?.Q __ !l_3 45~Q.Q.._ 572~79.~-7 ~_2 . '?79_.sa .. a 4 -:.~~-· .. 760ogoo 33.1ZO.t!OQ.I,J .}.!h.1 2_2:6 21.! 5 ... ZQ:!!_ _ _ ... _ !~l ___ . . 1.~.!2... .,_!!_!o ...

_ _ J!U10 33 1._~ _83 sa.aQ... _ 6_7]_ .. 'H9.5~08 _9 79_.58:34 -83.9b OCOOO 33 . 060Q_QO (,i _2J.!.l _____ 4.!1 (' . b - 0.5 ------ - - 2 . o - 2 .7 _ _::--3. ? -· ·-

--·- T~li.l 33 0~90 83 5 !!.40 626 97~.._5_45 7 ~1~!579_? _.=~3 .9733333 33 . 0 1500GO L4.9 7 . 3 6 .1 4.'1 3 .6 L.t; 2 .1

-~~T¥-P·~a~a~~~R~A~M~--------------------- ------ --- ------- -----------

.0 LAT LONG ELEV OBSERVED THEOR LONG LAT FA az . 2o 82.3~ B2.50 ~67 82. 7S -~~.:..13_? ... . ..

3.6 2.9 ~.1 - -··---·-- --15112 33 1.5Q 83 57.10 645 979.5454 979.~8Q2_=~3.951o667 3?.0250900 25 . 5 7.4 6.2 5. 0

15113 33 o.9o e3 54.80 658 979.5485 979.5797 -83.9133333 33.o1soooc Jo. ·r 12. 2 u.o 9.7 !l.3 7. 6 6 .• 8

TS174 33 1.10 83 52.80 613 979.5522 979.S808 -83.880000 0 33.0283333 29.1 11 • .J 1 0 .7 9 .5 8.2 7.6 o . ti

TS175 33 ' 0.7~ 83 49.40 477 979.5656 979.5794 -83.8233333 33.0116667 31. 0 17.7 1o.7 15.d 14.8 14.3 13.7

T5116 32 59.40 83 46.50 570 979.5646 979.5776 -83.7750000 32.9900000 40 . 6 24.6 2 3 .5 22.4 21. 2 20 . 6 19.8

15177 32 59. 7.() 83 48.80 473 979.5680 979.5781 -83.8133333 32.9950000 34 . 4 ;u. z 20 .3 19. 't 18 . 3 l7 .a 17.2

151'18 32 59.40 83 50.70 575 979.5614 979.5776 -83.8450000 32.9900000 37.tl 21.7 2C.6 19.5 18.3 17.7 16.9

T5U9 32 58.30 83 49.60 460 979.5687 979.~5761 -83.8266667 32.97loot>7 35 . d 22..9 22 . 0 2 1. 2 20 . 2 19.7 1-1.1

~5180 32 56.60 83 48.80 570 979.5619 979.5738 -83.8133333 32.9433333 41.7 25.7 24.6 23.5 22.3 21.7 Ll. O ---T518~2 58.40 83 52.40 589 979.557& 979.5763 -83.8733333 32.973333j 36 . 9 2J .4 1 ':1 .3 18.1 16.9 16.3 15.5

_I.iJjL;!~ 59.7<J 83 53.70 o42 979.5522 979.5781-83.8950000 32.9950000 34.5 1 :>.5 15.3 14. i 1 2 .7 12. 0 ll.L

T5183 32 57.80 83 55.70 580 979.5564 979.5754 -83.9283333 32.~?33333 35:5 19.2 i !l .1 17.0 15.8 15.2 14-.4

__ __ TU .. 8~32_ -~~· ~Q____ll_-~~_,_g_Q_ 554 979.5556 ~-79. 5775 _:-!)j. 9}33 333 _g_._2d833_~3 __ 30.2 14.7 ---- 1 3._6 12.5 11.3 10 . 8 J. Uo1

_n_l~lt..33___9~~0 83 56.40 607 979.~_Q~_J79 .. S5Q_S _=._83.94000QO g.00333D __ B·! -

._ll_lft5 32 55.20 83 48 .. 80 587 9]9.j575 979.5719 ~~3~]11~}43 32. 92000.Q.Y 40. B 24.4 2J . 2 22. 1 20 . 8 2 0 . 2 19.5 - - ·---22 . 6 21 . 5 20.5

-··-~- --------__ ..]5186 32 54_._!.9~ 49.!!.1L_ 537_~J9.557~_9_l~.5704_-:_8_3.~2-~3~?3_ 32 ~90l_o~o1 __ 3"1.6 19.3 18.8 1tl .1

.. J~ 187 _ 32. 54 • . ~0 83 51~~.9 ____ 5_07_ 9?9.569_7 'i_1.!!_.!2_1__0'? -83.8_~QOOOO 32.9050000 37.7 -- _?__~ ~,_? __ 2<:.~ 21.6 LO . ~ 19.'-J l'-1.3

_ .• J~J-!!1!....}2_55. 'iO .. 83 5_?_.Q_Q_ _ _2JP-.... 2..~~.!..?2~7'k2_I_28 __ -8_3d!~~6~~_7 32. 93lof>£_4_0.~-- 23 . 8 22.7 21.6 20 .3 19 . I i'J. O

. _ T_Sl_89 ~-L~5~~- -~~- 5.:.90 521 _~?9. 5616_ 9.l'l. '!..'n?t. -83.a~_tb{>{>I __ 3~~f.!!..666.J . . 3!!~~-----fl· ? __ ~~-·_o_ 21 . o -- --· 20.4 19.'-J 19.<:

_ 15l90 32 _54. 60 83_ 53.80 5)._2 _'!_79~_261_3_9?_9· 5711_ .=~3._ 896~~!>J~2. 910000C 38.4 24. 0 -~: 0 _____ ~2.1 _ ___1_!._!...0 ___ _10 .4 19 . b

T5!91 _32 ~~· ~~---8,:3_5_~-~ 10_ ... .?.1!.4 _ 97'h..5.272 97..2.:..?..:!.?1.. -_s~ •. 2.283_3_31__~_._93ooooc 39 .4 ____ l> . o 21.9 29. s ___ . ~-9· .?____ _ •. !..~ - ~ lo. <: . ---· - ·-

1519~_ J2 __55. _~Q ___ _ 83 _?6_,.40 . _540_ ~ .. J'!~5591 __ ~J~.5.H9 _-:.f!~_.'l_40QOOQ__ ~-~_._92_0_QQ_O_y __ ~d_dL .. -~- 22._2 ____ .... ~ .1~L ~_0..!.8 19. 6 1 9 .1 1b.4 --- ----·- ----- -T5193 32 _56.20_ 83 58.50 628 9}_'l_~_ ?.?£~-9~9.573_3_ -8_?!.9750000 }?_.936o667_ 30 .4 <:.J.a 1 9 . 6 1 &.4 --- -- - 17. 0 15 . 6 16 .4

T5194 . 32 57.30 83 5_7._49 _. 635 ~J9.!l_?2~ 979.5?~~ _-oh9566~o7 _ _3~?...!.._9;55000_0 __ 37 __ . § ___ 1 ~ · 2 .. _ ~~? ____ _ 1_2. 5 H .• l lS.':> 14 .7 · -- -T5195 32 57.40 506 979!.~6~..! . '_H9.5_?_49 -83._7_?33~33 38. d 22.7 32.9566667 - ~- ·--83 45.20 24.o 23 . 6 Llo6 21 . 0 2 0 .4

T5196 32 55.20 83 42.60 326 979.5732 979.5719 -83.710oooo 32.92oooo0 J~. o 2.2.d 22.2 Zl.t> 20.9 20.5 20 .1 ---· -·- ·---·-----

15197 32 54.40 83 ~5.50 528 9~~-55~1 9?9-~7.08 ::-:_8~.7583_333_ ~~- -99bt>~gl. 38. 0_., __ 23~L_ __ ~2~__1 ____ 2.!_~1 . 2.0...~ 0 ___ ___ _!_9~~ - - -. _1d.b __

T5198 32 53.70 83 45.70 531 979.557! 979.569o -H3.7616667 32.895000C 37.2 2~.3 21.3 20 .1 19 .1 1&.o 17 .>-

T5199 32 52.20 83 46.90 456 979.5548 979.5678 -83.7816667 32 . 8 70JOOC 29 . -'J l 7 . l l c .~ 15.4 14 .4 l3.-} 13 . 3

·--~n .J!RUGUfll-____ -------------

•.... _NQ. . · -·-'·~'-- ____ l,.Q!iG. - ----~~..f.Y. .J}~-~~VED .. _J.ttJOR ___ _LONG LAT - . F~- -- _BZ! .?..Q._ . ~~ ·.3 .~ . !3 ~-~ .2_0 i:l 2 . 6 7 B2.75 d£.85

T5200 32 ~2. 40 63 . 49.90_ 480 979.~573 919.5o8Q -83.8316667 32.8733333 ·34 .4 20.9 2 0 . 0 t '"'~ l l tJ. l 17.6 1o.9 ___ .., _____ T5.2Ql 32 51.80 83 __ 52.60 536 979.5530 979.S672 -83.~766661 J2. 86.B33:, 36 . 2 .21.1 2C .1 19. l 17.9 17.4 16.7 --· ~-~---

_ __!~~02 32 52. 8() 83 5?~jQ___2_13 ~:!~5524 97?_.5_6_f!_6 _ -tlh._~316667 32.8800000 41.5 24.3 2J.l 21.9 2 0 . o 20.0 19.2 ---.. ·- - -- ·· - ·-- --· -- ..

_ _!'-._2(!3 ~~- ~~· OD_ 83 57.80 517 __ 9~9.55~.~ 979.5689 -83.9633333 32.6833D3 40. ~ 24.7 23.6 n.5 21.3 20.7 19.9

""",/

/' ,/' BOUGUER ANOMALY

OF MAP

THE SOUTH-CENTRAL GEORGIA PIEDMONT

by

R. H. CARPENTER and J. P PRATHER

(PLATE I.)

51 2 3 G 't t . d b 0 ravt y s atton an num er

-- lsogal contour

(contour interval 2 milligals)

Assumed density 2 .67

SCALE 0 I 2 miles ' !;;;;;;;;;;;;;;

QS0l4 \NP..M co. -~--+-::::r•:t~~- ;,.,----

8ut ~ t otft9iiH frQnll Gt(uqio C.OUfll1 ~l'l•oy tl'oGJ'