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LOCKWOOD GEOPHYSICAL SERVICES '
4iJtesweni 8852 BEANGE 010
REPORT ON
AIRBORNE SPECTROMETER SURVEY
TOWNSHIPS 143, 144, 150, 155, 156
ELLIOT LAKE, ONTARIO
For
KERR MCGEE CORPORATION
By
LOCKWOOD SURVEY CORPORATION LIMITED TORONTO ' CANADA
ir X" '
life
MAY, 1970
l
1. INTRODUCTION
On April 25 and 26, 1970, an airborne radiometric survey was carried out by Lockwood Survey Corporation Limited for the Kerr McGee Corporation in parts of Townships 143, 144 , 150 , 155 , 156 in the vicinity of Elliot Lake, Ontario.
The survey comprised 348 line miles over 355 claims which are listed in Appendix A of this report.
Surveying was done in three localities;
Area 1: including NE part of Twp. 155, SE part
of Twp. 156 and SW corner of Twp. 150
Area 2: covering northern half of Twp. 143 and including May Lake
Area 3: mainly in east-central part of Twp. 156
in the vicinity of Dunlop Lake.
The survey was done using a Beech Queenair aircraft, registration CF-ROA. Instrumentation consisted of an A B EM ,
4 channel gamma ray Spectrometer and the following ancillary equipment;
1. 35mm tracking camera
2. radio altimeter
3. ABEM and Moseley analogue recorders.
Traverses were spaced at 1/16 mile or 330 feet on anEast/West bearing. Average terrain clearance was 250 feet.t,*BB*MIMBMIBBIIIIBM*4M*mMMMMMMM*HMM*l*B ^••^•^••••^••^•^^^^^••^•••Mi^^WMWBMM^BMMWM*^*****'1"*"""*"1™^1"'*"*1*
The base of operations for the survey was Gore Bay, Ontario.
f Y W'*5. The survey was undertaken by the following personnel;
. Pilot - E.G. Jones'r Navigator/
.'-.i Operator - F.E. Birchall;';v " Data Technician - P. Bell
Address of the crew is 1450 O'connor Drive, Toronto 16, Ontario.
- 3 -
2 . INSTRUMENTATION
ABEM SPECTROMETER
This equipment is a discriminating type of
radiation detector using a single crystal of Thallium
activated Sodium Iodide, 5" in diameter by 6" high.
This equipment is set up so that the Thorium,
Uranium and Potassium content of the total count can
be ascertained.
Each channel is set to the energy spectrum as
follows:
Positionin Spectrum IntegratingSpectrum Width Sensitivity Time_________
Total 20 KEV to 3 MEV 1 0* 1 000 cps l sec.
Potassium 1.46 MEV 101 100 cps 0.5 sec.
Uranium 1.76 MEV 101 30 cps 0.5 sec.
Thorium 2.62 MEV 103i 30 cps 0.5 sec.
Output is recorded on individual channels of a
four channel chart. Each channel is 4 cm. wide. Chart
speed was 10 In./min.
m.
- 4 -
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SPECTROMETER PROFILE
Canadian Applied Research Positioning Camera Mk VIII
This camera used a 35 m.m. film si2e and
was operated in a discrete frame mode. The frame
size is 28 m.m. lateral by 25 m.m. longitudinal.
The focal length is 18.5 m.m. The resulting lateral
coverage was 1.5 times the terrain clearance and
longitudinal coverage equal to the terrain clearance.
Each frame was numbered by a prism system which exposed
"veeder" counter numbers on the side of the frame at
the moment of exposure. Co-incident with every tenth
exposure a fiducial pulse was imprinted on all aerial
recording charts.
Interval between exposures was .75 seconds.
- 6 -
RECORDING RADIO ALTIMETER
Minneapolis-Honeywell Model HG-9000
A record of terrain clearance was made
in continuous analogue form on a separate chart.
Recording range was O - 1,000 feet
across five inch chart width. Chart speed was
4"/min.
- 7 -
FmyciALs - -{j j.i./"- ; ••-•~ -~-
_ .',.,T--Z- -•—-r——-—. - -,........
—-.—————^-i——.— ——. — -u...^,i .~ '- .....—— - - ~fi'r\.x i '-f \*
--.-.. ...— ——l- K.-. N/'I.I^V' -.-..
D 4? PER MINUTE
o."-" i.no J-. ^ T m* ~: - -"i
RADIO ALTIMETER PROFILE
l l i l l t
- 8 -
L- SURVEY PROCEDURE
The Spectrometer channel calibration was checked and
adjusted immediately before and/or after take-off for
normal function, e.g. pen alignment, sensitivity and degree
of noise. Provided the Spectrometer was working satis
factorily, the flight would proceed following predetermined
flight lines marked on uncontrolled mosaics (scale l inch ~
660 feet) .
The aircraft followed a systematic predetermined pattern
of flight lines at an average elevation of 250 feet and
average horizontal separation of 1/16 mile.
The position of the aircraft was recorded by a vertically mounted camera. In view of the low ground speed, there was
no significant lag between the recorded position and the
instrument. Every tenth frame was recorded on the Spec
trometer trace by a reference mark and numbered to correspond
with the film frame number.
- 9 -
4. DATA REDUCTION ..ND PRESENTATION
The flight measurements included 35mm positioning film,
duly processed and developed, terrain clearance record and
Spectrometer records with appropriate frame numbers and
field annotations, plus an operator's Daily Flight Report.
The track of the aircraft is recovered on the photo
graphic mosaics by examination of the film: prominent
features, i.e. roads, lake-shores, etc., are used for flight path recovery.
The frame numbers of the individual plotted poir.ts
located on the mosaic are identified on each record.
A background total gamma ray flux intensity was ascertained
from the ABEM records over large bodies of water. The back
ground level was found to be 200 counts per second ( 30 cps).
The total gamma flux count records were manually inter
cepted at intervals of 100 cps. above background, i.e.
200 cps. At the location of total count peaks, the value
in uranium and thorium channels were also measured. The
positions of the intercepts, uranium and thorium peaks and
fiducial points on the analogue profile were transferred to
or transcribed onto the flight line plot map d" = 1/8 mile).
As part of the data reduction procedure the profile
data was manually filtered to suppress the non-geological,
random noise component system. No altitude correction was
applied to the data because of the lack of information per
taining to source geometry.
Final maps were compiled at a scale.of l" s 1/8 mile.
- 10 -
5. GENERAL GEOLOGY
The following geologic.al i. aps at a scale of l" ^ 1/4 mile
published by the Ontario Department of Mines, were available
at the time of this work and were used to establish correlation
of geology and the radiometric data:
1. Map'No. 2001 "Township 143", issued 1961
2. Map No. 2002 "Township 144", issued 19613. Map No. 2014 "Township 155", issued 1961
4. Map No. 2015 "Township 156", issued 1962
Table I taken from the legends of these maps describes the geological succession in the survey area bedrock;
TABLE I: ELLIOT LAKE GEOLOGICAL SUCCESSION
Age Formation Lithology
Post Huronian Keweenawan ("Nipissing") diabase, gabbro, dioritesills and dykes
Huronian Cobalt GroupLorrain fm. Gowganda fm.
Bruce GroupSerpent fm. Espanola fm. Bruce fm. Mississagi fm,
Volcanics - -UNCONFORMITY--
quartzitequartzite, greywacke,conglomerate
quartzite, conglomerate limestone, greywacke conglomerage, greywacke quartzite, arkose, conglomerate
Archaean granite, granodiorite
* ' - - . -"
Huronian sediments dated at between 200Jand 2500 million
- years underlie the survey areas. These sediments comprise i
the Elliot Lake trough, a localized structure overlying
Archaean crystalline rocks. Known uranium orebodie'5, in
the general vicinity of the survey areas, e.g. Quirke Lake,
Nordic Lake, Consolidated Denison, are located in the lower
part of the Mississagi fm. - in quartz pebble conglomerate
zones .
- 12 -
6. INTERPRETATION
Area 1; Twp. 155 NE, Twp. 156 SE, and Twp. 150 SW.
The south-central part of the map area underlain by
Gowganda fm. conglomerate is characterized by total count
radiation in excess of 300 cps. with in some localities
radiation exceeding 400 cps. Much of this radiation is
evident in the Potassium channel. However substantial Uranium count response is evident at some of these localities;
(1) lines 219, 220, 221 in claims 78774 and 79978
(2) line 223 in claims 78487 and 78497
(3) lines 230, 231 in claims 78499 and 78498.
These anomalies cannot be explained entirely by devia
tions in ground clearance and therefore merit ground follow-up.
A rather extensive zone of intense radiation, i.e. in excess
of 400 cps. in the southeast part of the map, crossed by lines 236 to 240 inclusive; claims 78490, 77731, 77732,
77729 and 77730 appears to be mainly due to low terrain
clearance.
At a number of rather scattered localities anomalously
high uranium response anomalies were detected, i.e. in excess of 8 cps. and these are annotated on the map;
Line Claim Uranium/thorium channel count
210 78782 9/2215 79003 8/0227 78917 9/4232 78639 9/2234 78499 9/0234,235 78489 8/0, 8/1236 78490 8/0238 77726 8/0244 78508 8/0247 78512 8/0
These merit further assessment.
- 13 -
Large radiometric lows in the map area correlate with
bodies of water, e.g. Summers Lake and South Lake in north
western and northcentral parts of the map. Numerous
faults in the area, striking NE-SW, N-S and NW-SE can in
some instances, be correlated with offset and/or termination
of radiometric closures.
Area 2: May Lake (north half of Twp. 143)
The presence of outcropping conglomerate of the Gowganda
formation is invariably correlated in this survey area with
high total count response, i.e. often above 300 cps. over background. This is particularly evident in the north
west corner of the survey, i.e. lines 303 to 309 inclusive
and east of May Lake. Much of this radiation is evident
in both Potassium and Uranium Spectrometer channels.
The Serpent formation (quartzites) which outcrop over
the central and southwestern parts of the map are associated
with low to moderate total count response. Espanola fm.
dolomite along the west shoreline of May Lake has poor
radiometric signature. Keweenawan diabase sills outcropping
are characterized by lower than average radiometric response,
i.e. typically less than 200 cps.' above background. The
outline of May Lake is followed very closely by total count
contours; virtually all radioactivity of bedrock underlying
the lake is suppressed by water.
Virtually all of the local closures in the total count
contours expressing total count response over 300 cps. are
due to local decreases in aircraft terrain clearance and
are probably associated with ridges or hills. However
several anomalously high anomalies identified in the uranium
and thorium channels (annotated on the map, in excess of 9 cps.)
mi
- 14 -
merit further consideration.
Line Claim Uranium/thorium channel counts
328 E of346330,331331341323327329331346
Area 3: East-Central
1371231378561331221326651326,62132696132684132685132685132713
Part
9/20/08/0,8/08/0VI
, 132695 9/09/09/08/0
of Township 1
7/0
56
The most conspicuous feature in the contoured total count intensity map is a radiometric low wh: oh in outline corresponds fairly well with the shores of Dunlop Lake, i.e.
the water has effectively suppressed the radiometric ex pression of the underlying bedrock.
A broad anomaly in the southwest part of the map across
lines 118 to 125 consisting of total count intensity in excess of 300 cps. is situated over quartzites of the Lorrain fm. Inspection of the individual U, Th and K channels reveals that much of this anomaly would be explained by h i gh pot a s s i urn content in the quartzites.
Secondctry features evident in the map are described
as follows;
(1) a radiometric low which parallels a northwest trending Keweenawan diabase dyke in the south-
east part of the map across claims 78673 and 78675
(2) an exposure of Gowganda greywacke in the south- west part of the map (claims 78711, 78670) is
characterized by a radiometric low
- 15 -
(?) Gowganda formation quartz! tes north of Dunlop
Lake have poor radiometric expression.
Immediately to north, Serpent fm. quartzites
have good radiometric expression (line 101)
which is mainly due to potassium concentration.
In summary however no areas or zones of economically
significant radiometric expression were mapped in Area 3.
Respectfully submitted,
LOCKWOOD SURVEY CORPORATION LIMITED
cjr-A. Spector, Ph.D., P.Eng. Chief Geophysicist.
APPENDIX A: LIST OF CLAIMS AND SURVEY MILEAGES
Claim No.
SSM7866878924
S129445135632136308136310136314
SSM7772578487785897859578603786257891078915
SSM786207876578982789117900079973
LIST OF CLAIMS
Spectrometer Survey
to Claim No.
SSM7871178926
Total of 47 claims
Total Flying 58.4
hileage over claims 40.7
S.l.29452135634
~*--
SSM777427851678592785987860678640
-78917
7878578993789147901279979
Twp.
156156
miles
miles
150150150150150
155155155155155155155155
156156156156156156
No. claims
143
83111
1830444
1613
121124
137
Total of 152 claims
Total Flying
Mileage over claims
187.0 miles
156.1 miles
Spectrometer Survey (continued)
Claim No, to Claim No,
S132642133114134308134312134324134328134332134336136306137242137305137774137808137816137821137848137866137882.138000144701
S134310134313134307134333134338144699
S132713133122131309
-134325134329
-134337
137250137313137775337814137818137824137856137869
-138003144702
S134311134314
134335
-
No.
143143143143143143143143143143143143143143143143143143143143
144144144144144144
Total of 156 claims
Total Flying
Mileage over claims
205.0 miles
Ib0.7 miles
729212212 l 9 9 2 734 9 4 l 4 2
2 2 l 3 l l
APPENDIX B: PERSONNEL QUALIFICATIONS
i;;v'x-
Name
Employer
Position
Nationality
Place f* Date of Birth
Marital Status
Education
Past Experience
BIOGRAPHICAL NOTES
ALLAN SPECTOR
Lock'-rood Survey Corporation Limited
Chief Geophysicist, Director of Analytical MethodsDepartment
Canadian
: Toronto, Canada, July 25, 1941
: Married, one child born November 5, 1968
: B.A.Se., 1964, in Engineering Physics, Geophysics Option. M.A., 1964,in Department of Physics, Geophysics
Laboratory. Ph.D., 1968, in Department of Physics, Geophysics
Laboratory.All three degrees were obtained at the Unive rs i ty of Tor on to.
1962:
1963:
1965:
1967:
1968- 1969:
Gravity operator for Dominion Observatory, 5 mont)., in Canadian Arctic Islands.Scientific Officer, Dominion Observatory, measurement and interpretation of gravity data in Arctic Islands.
Scientific Officer, Geological Survey of Canada, research and development of aeromagnetic interpretation methods.
Geophysical consultant for Huntec Ltd., measurement and interpretation of gravity data in Yukon and Northern Ontario.
Senior geophysicist, Huntec Ltd., Toronto. Main activity: interpretation, and processing of aeromagnetic data, ground magnetic and gravity data with special emphasis.on application of digital computer. Over 20 reports completed, dealing with interpretation of aeromagnetic and gravity data in B.C., Alberta, Saskatchewan, N.W.T., Ontario and Labrador, West U.S.A., Alaska, Central America, U.A.R.
April 29, 1970
' - -" ' •'• f . ' .'-' 'if'* *' *.' f .-.- :. -V f
l ; :" implications
Theses
Professional Societies
References
Professional Status
. - 2 -
1966 A Gravity Survey of the Melville Islands Icecaps Journal of Glaciology Vol.6, pp.393-400.
1966 Energy Density Spectrum and Antecorrelating Functions of Anomalies due to simple Magnetic Models. Geophysical Prospecting, Vol.14, pp.242-272.
1970 Statistical Model for the Interpretation of Aeromagnetic Maps. Geophysics Vol. 35 (in press)
1970 Gravity Studies Over Three Evaporite Piercement Domes in' the Canadian Arctic. Geophysics Vol. 35 No. 1.
1963 A Gravity Survey in Greenland and Northern Ellesmere Island. B.A.Se. Thesis, University of Toronto.
1964 Crustal Structure of the Western Queen ; Elizabeth Islands. MA. Thesis, University of Toronto.
1968 Spectral Analysis of Aeromagnetic Maps. Ph.D. Thesis, University of Toronto.
Association of Professional Engineers of OntarioAssociation of Professional Engineers of British ColumbiaCanadian Association of PhysicistsSociety of Exploration GeophysicistsEuropean Association of Exploration GeophysicistsAmerican Geophysical Union
J. T. Tanner, Gravity Division, Dominion Observatory, Ottav/a 4 .
Dr. B. K. Bhattacharyya' and L. W. Morley, Geophysics Division, Geological Survey of Canada, 601 Booth St., Ottawa.
Dr. N. R. Paterson, 141 Glenrose Ave., Toronto.
(1) Pr o f essi o nal Engineer in the Province of Ontario under the provTiTons of the Professional Engineers' Act
Pro f ess i ona l Eng j nee r in the Province of British Columbia (non-resident license)
Chief Gcophysicijst, Lockwood Survey Corporation Ltd.,Toronto.
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Twp. 155
THE TOWNSHIP OF
156DISTRICT OF
ALGOMA
SAULT STE. MARIE MINING DIVISION
SCALE:MNChN4O CHAINS
LEGEND
PATENTED LANDCROWN LAND SALELEASESLOCATED LANDLICENSE OF OCCUPATION
MINING RIGHTS ONLY
SURFACE RIGHTS ONLYROADSIMPROVED ROADSKING'S HIGHWAYS
RAILWAYSPOWER LINESMARSH OR MUSKEGMINESCANCELLED
C.S.
©Loc.L.O.
M.R.O.
S.R.O
NOTES400 1 Surface Righghts Reservation around all takes and rivers.
This Twp. lies within THE IMROVEMENT District of ELLIOT LAKE.
in-ft TP"Ik* ."-V; E; fcs
Wl BF M[
PLAN N O, M. 1604
DEPARTMENT OF MINES
ONTARIO
TRIM LINE
4iJi0sw*iii eess BEANGE
o o ra -v
200
THE TOWNSHIP ORTwp. t57" '
V -*.-^*"# 3*W**i*
DISTRICT OF ALGOMA
TP^sSSFfi^ftf SAULT STE. MARIt MINING, D IVISION
SCALE:14NGH-4OCHAlfs*S
LEGEND
PATENTED LAND CAQWftt LAND CHASEStoc*reo UM*OLICCNSE OP CKCUfATtOW MINING MIGHTS ONLY
MIGHTS ONLY\
ROADS HIGHWAYS 1
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PLAN NO.vM.l6Q4
Twp. 155 DEPARTMENT QF MINES
ONTARIO
Twp. 156 (M.I604)
~" ~
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ELLIOT LAKE
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Mack Twp.(M.I303) McGiverin Twp. (M. 1311)
*c*-w,TRIM . LINE
(D O
THE TOWNSHIP OF
DISTRICT OF ALGOMA
SAULT STE MARIE MINING DIVISION
SCALE;HNCH^4O CHAINS
LEGEND
PATENTED LANDCROWN LAND SAULEASESLOCATED LANDLICENSE OF OCCUPATIONMINING RIGHTS ONLYSURFACE RIGHTS ONLYROADSIMPROVED ROADSKING'S HIGHWAYSRAILWAYSPOWER UWGSMARSH OR MUSKEGMINESCANCELLED
* c
*u
NOTES
400* Surface R ights Retervation around oil Lafces and Rivers
Sand S.Gravel on all unpotenfed mining claims in thit Twp. retervtd to the Crown.
This Twp. lies within the IMPROVEMENT DISTRICT o f E LLIOT LAKE.
p E O-S ? i'
HARM BEPl SF MIE
PLAN NO M. 1603
DEPARTMENT OF MINES
— ONTARIO —
Twp. 151 (M.-I220)
158676 l 138675 l 138674 j (36673 l (38672 -
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Twp. 149 (M.-I2I8)
THE TOWNSHIP OF
150DISTRICT OF
ALGOMA
SAULT SIC MARIE MINING DIVISION
SCALEil-INCH^O CHAINS
LEGEND
PATENTED LANDCROWN LANG SALELEASESLOCATED LANDLICENSE OF OCCUPATIONMINING RIGHTS ONLYSURFACE RIGHTS ONLYROADSIMPROVED ROADSKING'S HIGHWAYSRAILWAYSPOWER LINESMARSH OR MUSKEGMINESCANCELLED
5^C
NOTFS400 Surface Rights Reservation around ali Lato* and River*.
Sand B Grovel on oil unpatented mining claims in this Twp., reserved to the Crown.
Area marked thus:fw?vw reserved to privot Quarryoperators S.Dept qf HighwaysFiles: H 5209. 151655. 36279' a. l 02 524.
H.E.PC Transmission Line from Blind River T S to AJgom Uranium Mine through Township ISO. File' 94896
This Township lies within the Improvement District of Elliot t.ake.
O&fiUB PL?l BF HIKE
PLAN NO.-M.I2I9
DEPARTMENT OF MINES
— ONTARIO —
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2
KERR M CGEE CORPORATIONAIRBORNE GEOPHYSICAL SURVEY
82045'
460 29'
RESIDENT GEOLOGISTSAULT STE. MARIE
CONTOUR INTERVAL______ — -..-_—,-tOO C.p.s.
MEAN FLIGHT LINE SPACING-_______-__330 FEET
MEAN TERRAIN CLEARANCE____________ 250 FEET
FIDUCIAL POINTS--___--_-_-- — ____o 3690
FLIGHT LINES____________ ——
TOTAL COUNT FLUX CONTOUR
IN c.p.s. ABOVE ASSUMED BACKGROUND———— -XC
LEVEL OF 200 c.p.s.500 enFEET
FLUX IN c.p.s. AT URANIUM CHANNEL CORRESPONDING THORIUM CHANNEL~ FLUX IN C.p.s.
SPECTROMETER MAP
PART OF TOWNSHIP 156ONTARIO
SCALEO SCO_____1000 1500____2000
Bm. iBfM—-taei^^f^tt^*m*u ' _.^:^_:..' ip^^^g^^^^™^^ ;^^-^^^^^
l Inch to 660 Feet
Flown and Compiled byLOCKWOOD SURVEY CORPORATION LIMITED
TORONTO, CANADA
1970
46*30*
2500^ FEET 46*25'
460 29'
460 30'
46*25'
82*45' 82*50'
SSM-1549
41J10SW011I 0852 BEANGE 280 Figure 3