northern territory geological survey 1/. 0 · i north flinders mines limited annual report for the...
TRANSCRIPT
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NORTH FLINDERS MINES LIMITED
ANNUAL REPORT FOR THE PERIOD 23/11/84 TO 22/1/85
SHEET : SF 52 - 3
EXPLORATION LICENCE NO. 2368 - TANAMI DOWNS
THE GRANITES 1 : 250 000
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by T.J. IRELAND
15/1/86
NORTHERN TERRITORYGEOLOGICAL SURVEY
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CONTENTS
Sununary
Introduction
Work Done
Results
Conclusions
ILLUSTRATIONS
Location
Airphoto Coverage
TEM Survey Location
Photointerpretation series (back envelope)
IN,,,I,"\
APPENDICES
1.
2.
Hunting Geology & Geophysics (Australia) Pty. Ltd.
re The Granites Region, Northern Territory.
McSkimming Geophysics Pty. Ltd.
Sirotem Profiles, The Granites.
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SUMMARY
Airborne reconnaissance was commenced by the completion of an aerialphotographic survey of the most prospective areas of the Licence.Regional geological and geomorphological features were investigatedby photointerpretation, Landsat interpretation and evaluation ofregional magnetics.
Exploration targets were identified.
An orientation TEM survey conducted over The Granites revealed thepresence of conductors.
INTRODUCTION
EL 2368 Tanami Downs is located some 600 km NW of Alice Springs, inthe central part of The Granites 1:250 000 sheet (Location Map). Itwas granted in November 1983.
Exploration is directed principally towards gold, but also to theassessment of potential for other metals.
WORK DONE
Regional aerial photointerpretation, and Landsat imagery interpretationof the whole EL was undertaken by Hunting Geology & Geophysics (Australia)Pty. Ltd., in conjunction with a geological evaluation of regionalmagnetic contours.
The objectives of these studies were
extend existing regional geological mapping if possibleby photointerpretation
identify (outcrop) areas, best suited to groundgeological investigation, for detailed aerialphotography
evaluate lineament and magnetic patterns.
Interpretation was performed on 1: 80 000 RC 10 photography, Landsatimages at 1:100 000, and aeromagnetic contours at 1:250 000 scale.Presentation is at 1:100 000 scale.
New colour aerial photography was flown over the southern and easternportion of the EL at the scale 1:80 000, and over selected parts ofthis area, at 1:25 000 (photo-coverage location plan) .
An orientation SIROTEM survey was conducted over The Granites golddeposits. Traverse locations are illustrated on the plan.
The objectives of the survey were
identify the TEM response of The Granites mineralisation,to assist in the eventual follow up of reconnaissanceanomalies, before disturbance of both the surface andthe subsurface by mine development activities is sufficientto distort the geophysical response.
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LEGENDMINERAL lEASE
GOlD MINING LEASE
N:M~NJRTH FLINDERSMINES LIMITED
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THE GRANITESSHOWING
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The survey was conducted by McSkimming Geophysics pty. Ltd., usinga medium power SIROTEM llS Survey System.
RESULTS
The photointerpretation was useful in nomination of areas fordetailed photography.
Exploration targets identified by the interpretation of variousgeophysical and photographic imagery are described in the Huntingreport, attached as appendix 1, and presented in the suite of1:100 000 scale plans folded inside the back envelope.
The SIROTEM profiles, attached as appendix 2, show a persistentzone of low resistivity in the vicinity of The Granites mineralisation.Further work is required to precisely identify its source.
APPENDIX 1
HUNTING GEOLOGY AND GEOPHYSICS (AUSTRALIA) PTY. LTD.
re THE GRANITES REGION, NORTHERN TERRITORY
Postal Address: P.O. Box 365,Fyshwick. AC T. 2609
Business Address' CentreCourt., Pirie StreetFyshwick. A.C T. 2609
Telephone (OE2) 80 4277Tele). 62677Telegrams: Astereo Canberra
lLHunting
0" Ref BAM/I,&!312/85
P,oJeot No. 17/85
Integrated Interpretation of Imagery, Aerial Photographyand Geophysical Data
Apphed Geomorphology in ASSOCiation
with Partridge. de Vii hers and Associates
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I ./ Hunting Geology andGeophysics (Australia) Pty.limited
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5th Septe.mbeJt. 1985
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MJr.. T. J. IJz.cta.nd,Se~~ Geotog~t,
Nouh FUndeM Ulne..6 Ud.,25 G~eenlU£t Road,WAYVILLE S.A. 5034.
v~ T~evo~,•
RE: THE GRANITES REGION, NORTHERN TERRITORY
A. 1ntMdu.c.:U.o n
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The ~:tudy C.OVeM an Mea 06 825 km2 w.Uh .:the GMn,Ue..6 gotdMctdin the eMt 06 the Mea.
The objec.tive..6 06 :the h:tudy weJt.e :to pMduc.e pho:to-~~c.:twz.a..e. al1dpho:to -g eomMpluc. inteJt.p~e.:ta.:t.W1'L6; an aeMmag 11WC. inteJt.prLe.:ta.:t.W 11and a LanMa:t inteJt.p~eta:t.{.ol1 06 geomo~plwtogy and ~~c.:tuJte :toM~~:t il1 m.{.neJt.at exptoMUon.
B. Method
Monoc.hMme aeM.ai. pho:togMphy a:t appM:Uma:tcty 1:80, 000 ~c.ate 06:the ~:tudy Mea WM .&uppUed by Nouh FUndeM Ulne..6 Ltd.CoveMge c.ol'L6~U 06 78 pho:togMph~ w.Uh a 60% 60~ and 25%WeJt.at oveJl..f.a.p. The phO:togMpM weJt.e geneMUy oaty 06 modeJt.a:teq~y w.Uh poo~ c.o~:t.
Directors: T. J. Gun jChairman). A. C. Theron (Managing Director), C. R. Nash (Technicsl Director). P. A. Rankin
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Geo.e.ogic.al cf.a;ta WeJl.e al1JWta.:ted onto individual. oveJl.fuy.6 aJ1.d.vz.a.M 6eNLe.d by pM j e.e.-Uo n 0nto a 1: 1aa,aaa .6 c.a1.e bM e. mapc.oMtJu.Lc.ted 6Mm a eombino..:Uon 06 R. c. 9 1: 80, 000 .6c.a1.e. photogM.phy, oJL:thopllOtomapl.> a;t 1: 100, 000 .6c.a1.e. al1d a 2%; :Ume.be.l'!£.Mgemel'l:t 06 pa.JL:t!.> 06 .the BMR 1:250, 000 !.>c.a1.e. MOlLlU: So.e1.:taY,eand The. GJtarutM geoJ!.ogy !.>he.w. The oJt.thopllOtomap.6 and .theel'lJ!.a.r'fJe.nlel'l:t Me !.>uppued wah !.>.tudy.
An il'l:teJl.pJteta.:tion 06 the. JteJ!.eval1.t pa.JL:t!.> 06 Land!.>a;t imagM 112-074aJ1.d 113-074 hM been lLItdeJt.ta./Wl a;t 1:100, 000 !.>c.ale.
An il'l:teftpJteta.:tion 06 the aeMmagneUc..6 a;t 1:250, 000 .6c.ale hMaL~o beelt wlde.tL:ta.ken altd !.>ubJ.> eque.n.tJ!.y el'!£.Mged to 1: 100, 000.6c.a1.e.
The il1.teftpfLeta.:tiOn i.6 pJte.6 en:te.d M uea.Jt 6ili 0veJl.fuy.6 •
The. !.>tudy WaJ., undv...ta.f<en in AugUJ.>.t 1985.
The ItMuUJ.> 06 the !.>tudy Me embodied il1 .the. ac.c.ompanying1: 10 0, 000 .bc.a1.e map.6. The.taJtg e..t Mea!.> Me fuc.uM e.d beJ!.ow aJ1.d.the numbeM lte6eft diJtec..tJ!.y to .the ac.c.ompOJlyillg photo geomoftphoJ!.ogy-!-UhoJ!.ogy !.>hee..t.
1• Tlli Mea UM -UJ1med.{.a;teJ!.y nM.:th 06 MuJtieJ!. RaJtg e., hM.6eveJta1. majOft Uiteame.nU idenU6.{.ed 6Mm aeMmaglleUc..6 aJ1.dLaJ1.d!.>a..t iJ1.te.Jz.plte..ta:tion, majOft ei!tc.uJ!.M 6ea..tuJte.6 and the.oc.c.uJtfte.nc.e 06 both Moul'l:t CIJ.CVl1M Bed!.> and invill./live. gr..QJli:te.
2. Tlli Mea, c.e.n:tJte.d on 06Mc.eJl. Hill, hM much the. Mme.fJac.toJtJ.> wah .the Oc.c.uJtftellc.e 06 a bMic. body M.60Ua:te.d wah.the. MowU: ChaJtJ!.e.6 Bed!.> afld the. de.veJ!.opme.1'l:t 06 an Mea 06hig heft maglle..ti.6a;u-cm wi:thi11 the. Mo w1.t ChaJtJ!.M Be.d!.>.
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MeSKIMMING GEOPHYSICS PTY. LTD.
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PHOTO GEOMORPHOLOGY AND LITHOLOGY
THE GRANITES REGION N.T.
Scale 1:100 000
REFERENCE2,....., o- 2 4 6 8 LOCATION DIAGRAM
,<
2
THE GRANITES MOUNT SOLITAIRE
SHEET INDEX
Study area
Study area
- .
MAP- 1-
NORTHERN TERRITORYGEOLOGICAL SURVEY
CRS6/l06A
Mine
Homestead
Road
Sand dunes
Photo centres
Quartz vein
Drainage course
Target areas (see text)
Drainage direction
Area of possible subcrop
Dykes
Clay pans
Topographic boundary
Boundary of geomorphic unit
3
•
CP
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• •
/---~
....................
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Mount Charles Beds
Cambrian Volcanics
Granites
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Laterite
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Clay soil
Aoelian sand in depressions
Calcrete
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Aoelian sand
Colluvium
Evaporites
Lacustrine depositsEEEE~
E~
~
L:J8~
DDGI pg I
~
TERTIARY
QUATERNARY
Greywacke, siltstones, shales
Amphibolite
Hunting Hunting C/'l>ll>gy and CeI>physlcs (Australlo) Pty llirutl'dPOBox 365 Fyshwlc~ A ( 1 lh09 Telephone (062) 80 4277 at
Hunting
Undertaken on behalf of North Flinders Mines Ltd. by Hunting Geology and Geophysics (Australia) Pty. Limited Job No 17/85 August 1985.
-----------------~'<
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LANDSAT STRUCTURE ,-' .~.,.
THE GRANITES REGION N.T.
Scale 1:100 000
• REFERENCE2 o- 2 4 6 8 LOCATION DIAGRAM
OLD,major lineament
mInor lIneament
...................
• •
Sand dunes
Road
Homestead
Study area
N, T.
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MAP - 2
NORTHERN TERRITORYGEOLOGICAL SURVEY
CR8 6 / 1 0 6..A-
SHEET INDEX
THE GRANITES MOUNT SOLITAIRE
2
Study area
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P:.I Box It-i~ ~ y<;hwl(~ All .'h()'~
Hunltng Ceology and Ceophyslcs ( ,4ustralta) Ply linuredHunting.~
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Hunting
Undertaken on behalf of North Flinders Mines ltd. by Hunting Geology and Geophysics (Australia) Pty. limited Job No 17/85 August 1985.
"
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200 45'
20· 30'
LANDSAT-GEOMORPHIC INTERPRETATION
THE GRANITES REGION N.T.
Scale 1:100 000
REFERENCE2 0M - -- ~
2 4 6 8 LOCATION DIAGRAM
QUATERNARY
TERTIARY
555~
a~
2~
Alluvium
Evaporites
Sand, silt and minor evaporites
Aeolian Sand
Grey clay soil
Colluvium
Calcrete
Laterite
• •
Sand dunes
Road
Homestead
Lake
Drainagp- seasonal
MPlP- 3~
NORTHERN TERRITORYGEOLOGICAL SURVEY
eft 8 6 '- 10 6A.....
Study area
SHEET INDEX
THE GRANITES
2
MOUNT SOLITAIRE
"
Cretaceous? Study area
Undifferentiated Palaeozoic
Cambrian volcanics
Muriel Range Sandstone, Proterozoic
•• ... ++-+t.;.
::Pg:::.. -+ ...... -+ +
Granites Proterozoic
Mount Charles Beds, Archaean?
Hunting Hunting Ceology and Ceophyslcs (ltustlalla) Pry {muted)'~ 'a:
Hunting
Undertaken on behalf of 1I0rth Flinders Mines Ltd. by Hunting Geology and Geophysics (Australia) Pty. Limited Job No 17/85 August 1985.
"
/. ......,..' ';.' ., .. I I1 . I'
"
SHEET 1129 0 30' 129 0 45' 130· 00'
,...
20 0 30' I-
20 0 45'
,., .....
. ...... .....
129 0 30' 129 0 45'
- 20 0 30'
I i
130 0 00'
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PHOTO STRUCTURE
THE GRANITES REGION N. T.
Scale 1 100 000
REFERENCE LOCATION DIAGRAM
Study area
- -- Photolineament
- ----- Bedding/foliation
'. ,~
· "
I, ,• N. T. t
, !, I OLD.
W.A. ~._---_-i--i,
S.A. IL------_-
THE GRANITES MOUNT SOLITAIRE
SHEET INDEX
~~ 2
----r-----L.......-.-----Study area
- - - ...
1'1 RP - 4-
NORTHERN TERRITORYGEOLOGICAL SURVEY
C886/106A
Sand dunes
Road
Homestead• •
...................
Dyke
Circular feature
Quartz vein
Dip and strike <10'<30·>30·
•
,.•
., ." ...........
Possible bedding/ foliation in areas of subcrop
Mapped fault and extension
- - Probable fault and extension
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Hunting Hllntl!)g Ce%gy and Ceopnv,n (Australia) Pty LImitedi-) (I H(;1 it," FV",h/v'1 k A .',,11'-1 l"IPtlhril\" ,0h,'1 HO I~J",'
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Hunting
Undertaken on behalf of North Flinders Mines Ltd, by Hunting Geology and Geophysics (Australia) Pty. Limited Job No 17/85 August 1985.
, ' • ", l,. ".j." •
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AEROMAGNETIC INTERPRETATION,.'
THE GRANITES REGION N.T.
Scale 1 100 000
REFERENCE2,....., o 2 4 6 8 10km
LOCATION DIAGRAM
Magnetic lineament
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OLD.
N. T.i,, ','--- ----j
i S.A. ~._,_,_.__I
W.A.
Study
Sand dunes
Road
Homestead
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--?--
SHEET INDEX
Study area
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MOUNT SOLITAIRE
2
THE GRANITES
MAP- 5'"
NORTHERN TERRITORYGEOLOGICAL SURVEY
CR8 6 I 10 6AProbable granite
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Hunting Ceology and CeophySlcs ( Australlo) Pty limitedHunting p 0 Bo:o;16~ F yst"1wlCk ALl Hi()Y Telephone (062180 4277
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C11/Hunting
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Undertaken on behalf of North Flinders Mines Ltd. by Hunting Geology and Geophysics (Australia) Pty. Limited Job No 17/85 August 1985.