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Ontario Geological Survey 2015. Airborne magnetic and gamma-ray spectrometric surveys, ternary radioelement image, Lac des Milles Lacs–Nagagami Lake area; Ontario Geological Survey, Map 82 722, scale 1:50 000.
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0.450.600.720.830.931.031.131.241.351.491.651.862.172.81
410000 m 42 430000 m
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410000 m 42 430000 m
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410000 m 42 430000 m
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4944049500495604962049680
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5022050280503405040050460
50580 50640 50700 50760 50820
5106051120511805124051300
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5178051840519005196052020
52200 52260 52320 52380 52440
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EVA TOWNSHIPSUMMERS TOWNSHIP
KITTO TOWNSHIP
MCCOMBER TOWNSHIP
KILKENNY TOWNSHIP
KITTO TOWNSHIP
11
LAKE NIPIGONPROVINCIAL PARK
NaonanIsland
JardineIsland
BigVirginIsland
McKeeIsland
FitzpatrickIsland
CedarIsland
AmikwianIsland
MacounIslands
Sand PointFirst Nation
Reserve
RockyBay 1
Forgan Lake
Lake Jean
PostagoniLake
Parole Lake
Postagoni River
PargetLake
ParlandLake
PawkyLake
BonnerLake
Lake Nipigon
BicepsLake
FairlochLake
Blac
kwat
er R
iver
KinagoLake
Blackwater River
Creek
High
MaryJaneLake
Camproad Creek
Hill
Beardmore
5468000 m 5468000 m
69 69
70 70
71 71
72 72
73 73
74 74
75 75
76 76
77 77
78 78
79 79
80 80
81 81
82 82
83 83
84 84
85 85
86 86
87 87
88 88
89 89
90 90
91 91
92 92
93 93
5494000 m 5494000 m
437000 m
437000 m
36
36
35
35
34
43
33
33
32
32
31
31
30
30
29
29
28
28
27
27
26
26
25
25
24
24
23
23
22
22
21
21
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
10
10
09
09
08
08
07
07
06
06
05
05
404000 m
404000 m49°35'59"
88°20'32" 20' 15' 10' 05' 88°00'00" 55' 87°51'30"
49°36'15"
35'
30'
25'
49°21'10"
87°51'14"55'88°00'00"05'10'15'88°20'07"
49°20'53"
25'
30'
35'
eU (equivalent uranium, ppm)
eTh (equivalent thorium, ppm)
K (potassium concentration, %)
TOTAL COUNT (natural air absorbed dose rate, nGy per hour)
U.S.A.
ThunderBay
Geraldton
Marathon
LakeNipigon
Lake Superior
11
17
11
17
85°86°87°88°89°90°91°
49°
50°
48°
51°
82715 8271782716 82718 82719827208272182724 82727
82723 82726 82729
82722 82725 82728 82730
82731
82732
82733
82734
82735
82736
82737
Location map 1 cm equals 35 km
© Queen's Printer for Ontario, 2015.
This map is published with the permission of the Director,Ontario Geological Survey.
2 km01 km 1
NTS References: 42 E/5, 12; 52 H/8, 9
Scale 1:50 000
CREDITS
Data acquisition, data compilation and map production byGoldak Airborne Surveys, Saskatoon, Saskatchewan.
Project management and quality assurance by Paterson,Grant and Watson Limited, Toronto, Ontario.
Contract management, base maps and map surrounds by theMinistry of Northern Development and Mines, Sudbury, Ontario.
Every possible effort has been made to ensure the accuracy ofthe information presented on this map; however, the Ministry ofNorthern Development and Mines does not assume liability forerrors that may occur. Users should verify critical information.
Corresponding digital data for this survey are available fromthe following Ontario Geological Survey publication:
Ontario Geological Survey 2015. Ontario airborne geophysicalsurveys, magnetic and gamma-ray spectrometric data, grid andprofile data (ASCII format) and vector data, Lac des Mille Lacs–Nagagami Lake area; Ontario Geological Survey, GeophysicalData Set 1078a.
Ontario Geological Survey 2015. Ontario airborne geophysicalsurveys, magnetic and gamma-ray spectrometric data, grid andprofile data (Geosoft® format) and vector data, Lac des MilleLacs–Nagagami Lake area; Ontario Geological Survey,Geophysical Data Set 1078b.
Issued 2015.
Information from this publication may be quoted if credit is given.It is recommended that reference be made in the following form:
Ontario Geological Survey 2015. Airborne magnetic and gamma-ray spectrometric surveys, ternary radioelement image, Lac desMille Lacs–Nagagami Lake area; Ontario Geological Survey,Map 82 722, scale 1:50 000.
SOURCES OF INFORMATION
Base map information derived from the Land Information OntarioData Warehouse, Land Information Ontario, Ministry of NaturalResources and Forestry, scale 1:50 000.
Magnetic declination for the centre of the map area wasapproximately 5°4'W in 2015.
Users of OGS products are encouraged to contact thoseAboriginal communities whose traditional territories may belocated in the mineral exploration area to discuss their project.
DESCRIPTIVE NOTES
AIRCRAFTType: Piper Navajo PA-31Registration: C-GJBB, C-GJBG
MAGNETOMETERType: Geometrics cesium-vapourSensitivity: 0.005 nTNoise level: 0.05 nTSample interval: 10 readings per secondSensor locations: wingtips (transverse separation is 14.78 m)
tail stinger (longitudinal separation is 9.75 m)Compensation: RMS AADCIIData Acquisition: GEDAS
GAMMA-RAY SPECTROMETER SYSTEMType: Radiation Solutions RS-500Downward-looking crystal volume: 33.6 LUpward-looking crystal volume: 8.4 LNumber of channels: 1024Sample interval: 1 reading per secondSensor location: near centre of aircraftPotassium window: 1370 to 1570 keVUranium window: 1660 to 1860 keVThorium window: 2410 to 2810 keVTotal count window: 410 to 2810 keV
NAVIGATION SYSTEMGPS receiver: Novatel OEM4 ProPakGPS sample interval: 1 reading per secondRadar altimeter: Thompson CFS 530ARadar sample interval: 10 readings per secondBarometric altimeter: Setra 270Barometric sample interval: 10 readings per secondVideo flight path camera: Panasonic GPKR402 HRSVNavigation-Acquisition: GEDAS
BASE STATIONType: GEM System GSM-19WMagnetometer sample interval: 1 reading per secondGPS sample interval: 1 reading per second
SURVEY SPECIFICATIONSSurvey date: July 18 to October 29, 2014Nominal aircraft terrain clearance: 100 mTraverse line spacing: 200 mControl line spacing: 2000 mTraverse line direction: 0 degreesControl line direction: 90 degrees
CO-ORDINATE SYSTEMProjection: Universal Transverse MercatorDatum: NAD83Central meridian: 87°W (UTM zone 16N)Central scale factor: 0.9996False easting: 500 mFalse northing: 0 m
SURVEY PARAMETERS
Introduction
The data comprising this map are derived from the results of anairborne magnetic and gamma-ray spectrometric survey carriedout by Goldak Airborne Surveys. The survey was flown using 2Piper PA-31 Navajo aircraft. The aircraft were each equippedwith 3 Geometrics magnetic sensors, Radiation Solutionsgamma-ray spectrometers, GPS navigation systems and digitaldata acquisition systems.
Ternary Radioelement Map
The ternary radioelement image was prepared by modulatingthe red, green, and blue (RGB) components of the colourspectrum using the normalized radioelement counts ofpotassium (K), equivalent thorium (eTh) and equivalent uranium(eU), respectively. The RGB image was then combined withtotal count (TC) mapped as intensity. Brighter areas displayzones of higher total count. The total count tends to outline unitboundaries and structure.
The gamma-ray spectrometer response represents radioactivityemanating from the upper 30 cm of the earth's surface. Thesurface concentrations are influenced by varying amounts ofoutcrop, overburden, vegetation cover, soil moisture andsurface water.
Ontario Geological Survey
MAP 82 722
AIRBORNE MAGNETIC ANDGAMMA-RAY SPECTROMETRIC
SURVEYS
Ternary radioelement image
LAC DES MILLE LACS–NAGAGAMI LAKE AREA
TERNARYRADIOELEMENT
IMAGE
LEGEND
FLIGHT LINEINFORMATION
Linedirection
Linember
>L12
701
1230 Fiducial
nuU
K Th