?41IMSW95ie 2.1699 HARTY 010

REPORT ON A

RADIOMETRIC AND MAGNETOMETER SURVEY

IN THE

HESS TOWNSHIP AREA

OF ONTARIO

FOR

DOME EXPLORATION (CANADA) LTD.

CONDUCTED BY

GEOTERREX LIMITED

Project 84-128A

Ottawa, Ontario, D.M. Wagg, P.Eng. December, 1974. R.K. Dowse, B.A.

oeoterrex

41M4SW95ia 3.1699 HARTY 010C

TABLE OF CONTENTS

Poge

I. INTRODUCTION l

II. INSTRUMENTATION 2

III. PERSONNEL 4

IV. CLAIMS COVERED 5

V. MILEAGE 6

VI. PROCEDURES AND DATA COMPILATION 7

VII. SPECIFICATIONS 10

VIII. CONCLUSIONS 11

g

I. INTRODUCTION

On September 3, 1974, Geoterrex Limited conducted

an airborne survey on behalf of Dome Exploration (Canada)

Ltd. The purpose of the project was to provide radiometric

and magnetic coverage in the Hess Township area of Ontario

over claims owned or held under option by Dome Exploration

(Canada) Ltd.

The area covered is shown on the accompanying plan

maps. It falls roi-ghly between 46 0 47' and 46 0 50' latitude

and 81 0 24' and 81 0 33' longitude.

..2

II. INSTRUMENTATION

The survey was conducted with o JD e H civ i 11 g n d Otter

DHC-3 registered in Canada os CF-AYR. This aircraft is a

single engine, slow speed, high performance type with a

normal survey speed of 100 miles per hour.

,A Geometrics Model G-803 Proton Resonance magnet

ometer incorporating a High Performance option was mounted

in the aircraft. This system, with sensitivity of +.1 gam

ma, records once per second, and is a digital readout unit.

The output is used to drive a digital printer, Hewlett

Packard Model 5050-B, and analogue output is directed to a

Hewlett Packard Model 680 six inch rectalinear strip re

corder.

Full scale deflection is 1000 gammas and automatic

full scale analogue deflection is incorporated. Recordings

made on the paper tape represent the intensity of the total

field.

An Exploronium DGRS-1QQQ spectrometer was also car

ried in the aircraft, along with a sensing head containing

7 sodium iodide crystals totalling 904 cubic inches.

..3

This is a four channel differential gamma-ray unit

measuring energy levels of potassium 40, bismuth 214,

thallium 208 and total count.

Time constants and full scale ranges are variable

and are selected to suit the conditions and background of

the survey area.

Depending on requirements of the survey, one or more

channels may be recorded on the eight channel recorder.

Other geophysical equipment used in conjunction

with the survey include a GAR Model 10 wide band radar alti

meter, a Hulcher continuous strip 35 millimeter camera for

path recovery, and c Geoterrex Model X-l solid state Inter

valometer which derives triggering from the magnetometer.

Basic fiducial pulses are provided once for each two mag

netometer readings so that in usual operation one fiducial

is produced for every ten normal fiducials. These fiducials

are simultaneously marked on the path recovery film, the

Hewlett Packard Model 680 recorder and the digital printer

in order to identify and locate geophysical records with

ground positions.

..4

III. PERSONNEL

The personnel involved in this survey include the

following:

A. Field,0peration

Pilot

Navigator

Operator

Data Compiler

Aircraft Engineer

A. Brotteng

L. Matthews

A. O'Hara

R. Lyall/G. McKnight

L. Fougere

B. Office Compilation

Data

Drafting

Geophysics

P. Tallyhoe

B. Schingh

D.M. Wagg R.K. Dowse

..5

IV. CLAIMS COVERED

A total of 51 claims are included in the survey,

They are:

S 378706 - 378709 inclusive

S 378730 - 378774 inclusive

S 381774 - 381775 inclusive

..6

V. MILEAGE

Total mileage in the Hess Township was 118 line

miles. Lines were spaced approximately 1/8 mile apart

and directed 325 0 - 145 0 . The dimensions of the grid are

roughly 3 miles by 5 miles.

..7

VI. PROCEDURES AND DATA COMPILATION

1. Photo Loydowns;

Prior to the actual survey operation, air photographs

were obtained of the proposed area and a photo laydown was

produced at the scale of l inch equals 1320 feet. Proposed

lines were drawn of these mosaics with the appropriate line

spacing and flight direction. These 'flight strips' were

then used by the air crew to navigate the airplane visually

along the proposed paths. This photo laydown was also used

to produce the subsequent base maps.

2. Aircraft Operation;

The air crew consisted of pilot, co-pilot (or navi

gator) and equipment operator. Using the flight strips for

navigation, the aircraft was flown along the proposed lines

at an altitude of approximately j.50 1;p 200 feet.

The operator recorded lines, direction of flight, and

the initial and final fiducial numbers of each flight line on

a flight log. The equipment was left on during the whole of

the survey flight but the intervalometer was turned on only

for the actual survey line. The appearance of fiducial marks

on the charts thus indicates the exact extent of the survey

line.

g

..8

3. Field Reduction:

Upon completion of the flight, the film was developed

and the actual path of the aircraft was plotted on the photo

laydown by comparing film points with the photo. For any

given point, the appropriate fiducial number was placed on

the photo laydown and the points joined to produce the actual

flight path.

4. Office Reduction:

Base maps drawn from the photo laydown show flight

lines and fiducial numbers.

To compile the magnetic results, the values noted on

the Moseley chart were transcribed to a work sheet (overlay

of the base map) after levelling or correcting for heading

error, diurnal, etc. The values were then contoured on the

work sheet and subsequently drafted on a copy of the base

map.

To compile the radiometric results, the flight path

was digitized and corrected and a speed check was conducted.

The raw radiometric data was processed on a Cyber 6400 CDC

computer and an IBM 360. Contours were produced to show the

uncorrected total count.

..9

Since base maps use the photo loydown as a base,

all geophysical results portrayed may be compared as over

lays, and all features of interest may be identified on the

appropriate photo for subsequent ground location.

Ofiptem

..10

VII. SPECIFICATIONS

Magnetic contours were drafted on a base map at a

scale of l inch s 1320 feet. Intervals of 20 gammas are

shown if possible, but in areas of steep gradient 100 gam

ma contours are indicated. Values shown represent relative

field intensities.

The uncorrected total count radiometric data appears

at an identical scale on a separate map. It is shown in

contour form also with an interval of 20 counts per second.

..11

VIII. CONCLUSIONS

The survey area has a moderately active magnetic

pattern with several indicated trends. NE-SW is the more

common strike, but the centre of the grid shows two dis

tinct narrow axes striking more E-W.

Maximum relative intensity appears to be about 1000

gammas

The radiometric contouring reveals some concentra

tion of activity in the northeast corner. Overall activity

appears to be in the low to moderate range.

Respectfully submitted,

/; 3 4 D. M. Wagg, P. Eng.,

R.K. Dowse, B.A.

411 HSW9510 2.1699 HARTY

Ontario

tural Resources900

UfcUfH YSICAL - UfcULOGICAL - GEOCHEMICAL TECHNICAL DATA STATEMENT

File.

TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORTFACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT

TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

Type of Survey(s) Airborne Magnet l c and RadiometricTownship or Area HeSS Township ___________________

Claim Hoidcr(s). Dome Exploration (Canada) Limited

Survey Compnny GeoteiTex Ltd. ———————.—————-Author of Report P.M. Wagg ̂ -——.—-———-......——Address of Author 2D6n Walkley Road, Ottawa , Ontario Covering Dates of Survey September/October , 197^ —-——

(linecutting to office)

NIL ____________Total Miles ol Line Cut.

SPECIAL PROVISIONS CREDITS REQUESTED

ENTER 40 J ys(includes line cutting) for first survey.ENTER 20 days for each additional survey using same grid.

Geophysical-Electromagnetic.-Magnetometer—.-Radiometric——-Other.-—————.

DAYSper claim

Geological.Gcochcinical.

AIRBORNE CREDITS (Special provision credit! do not apply to airborne lurveyi)

^/Electromagnetic._____ Radiometric s 19* 2MagnctometcrC.

DATE:.

(enter day* pfr claim)

SIGNATURE:.Author of Report or

i..DRes. Geol.. .Qualifiaitions.

Previous Surveys File No. Type Date Claim Holder

MINING CLAIMS TRAVERSED List numerically

(prefix) (number)

-y/

\ v

TOTAL ri AIMS 51

SELF POTENTIAL

Instrument————— Range.Survey Method.

Corrections made.

RADIOMETRIC

Instrument ̂ -.—Values measured.Energy windows (levels). Height of instrument —— Size of detector-—-——— Overburden ——————-

.Background Count.

(type, depth - include outcrop map;

OTHERS {SEISMIC, DRILL WELL LOGGING ETC.)

Type of survey———————————————————————————————— Instrument _________——————————————————————————— Accuracy———————————————————————————————————Parameters measured.

Additional information (for understanding results).

AIRBORNE SURVEYSrf l

Instrument(s) -̂f-^v^i tv*vt*v"

Accuracy — \0 r 9 ^ ..

Aircraft nsrd.^'Hviri*-!*^-^-

Sensor altitude. . P P 1Navigation and flight path recc

Aircr?ft aititiiH^ IS" o 1

Miles flown over total area

S

(tpedfy for each type of lurvey) ' 1 1 'V*-~*'v'~'Yrvilrf

(ipecify for each typ^e of lurvey)

0

)vrry m'th^d ViV-*-*^L HTXJL.V-TV^ .t^*-wv- W^*tb - **^* ICIA^-Or u 'I .inr Sparing A J kViltXt

' B Xt-v^-C rvwoXr^ Oupr rlaims nnly t,*?"' t*~

DOME EXPLORATION (CANADA) LIMITED

PROJECT 79 AIRBORNE MAGNETOMETER SURVEY

CLAIM NUMBER

S 37^706378707378708378709378730

731732733734735736737738739740741742743744745746747748749750

DAYS

19.2iiD11

II

M

II

II

M

II

II

II

II

II

II

II

II

II

II

II

II

II

II

II

II

CLAIM NUMBER

s 378751752753754755756757758759760761762763764765766767768769770771772773'774

381774775

DAYS

icj.2II

II

II

II

II

II

II

II

II

II

l)

It

II

II

II

II

II

II

II

II

II

II

II

tl

L. B.

January 2, 1975

DOME EXPLORATION (CANADA) LIMITED

PROJECT 79AIRBORNE RADIOMETRIC SURVEY

CLAIM NUMBER

s 378706378707378708378709378730

7317327337347357367377387397407417427437447457467A7748749750

DAYS••MMHMMBW

19.211IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIMIIMIIII

CLAIM NUMBER

s 378751752753754755756757758759760761762763764765766767768769770771772773774

381774775

DAYS

19.2"•itt11MMMItIIIIIIIIMII11IIHII

MIIIIIIIIMII

L. B. Hallada/X

January 2, 1975

DOME EXPLORATION (CANADA) LIMITED

PROJECT 79

CLAIM NUMBER

S 378706^6378707V 378708^•378709 x 378730^

731*0 732 X733^

AIRBORNE DAYS

735736^737V738^739741^ 742^743V 74467456746 '747748 y s749 y 750/

19.2

H nM

II

II

II

H

II

II

II

II

II

II

II

II

II

II

II

II

II

II

II

SURVEY CLAIM NUMBER

S 378751^ 752' 753 ^ 754*6 755^ 756V

759V 760V76l*V 762^ 7636765*6 766*6767 y 7686 769-6

*771V 7726773V

H381774 775^

DAYS

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II

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II

II

II

II

II

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LOCATION MAP

LEGEND

500 GAMMAS

100 GAMMAS

20 GAMMAS

MAGNETIC LOW

SCALE ' l i nch s. 15201/4 mill

i MILL' r i

CONTOUR INTERVAL . . . . . . 20 GAMMAS(.''l Ci 025 Oi

46"45

SCALE : l : 3 miles

l .1 i I SURVEYED 4 COMPILED BY

LM\J geoterrex^^^^^ ̂ ^^^H HV led

FOR

DOME EXPLORATION (CANADA) LTD.

AIRBORNE GEOPHYSICAL SURVEY /̂ /^/i^-

HESS TOWNSHIP AREA SUDBURY, ONT

SHf.ET 1 (J f' ! i MOPI2CNTAI. CON'HCi. . BASED ON

ISOMAGNETIC CONTOUR MAP

r.'OMOiJR INTERVAL

SCALf l": 1^520^ ! PHOTOMOSA-CS FLOWN IN OCT. 1974

FLIGHT ALTITUDE 400' MTC.

GEOTERRFX PROJECT No 84-128

4II14SW9510 2 .1699 HARTY 200

RECEIVED

8 1975

LOCATION MAP

CONTOUR INTERVAL . . . . . . . . . . ZO COUNTS PER SECOND

—— / C ONTOUR LINE

SCALE . l inch : 1320 f..t 1/4 mil*

i '

0?S OiT5 O 02S 05

- 460 45

SCALE^ l" - 3 miles

|H H SURVEYED 4 COMPILED BY

phijj geoterrexFOR

DOME EXPLORATION (CANADA) LTD.

AIRBORNE GEOPHYSICAL SURVEY /j^^^-

HESS TOWNSHIP AREA SUDBURY, ONT

SHEET 1 OF 1 HORIZONTAL CONTROL . . . . . . BASED ON

SCALE ~- l ": 1,320' PHOTOMOSAICS

RADIOMETRIC MAP

CONTOUR INTERVAL FLIGHT ALTITUDE . . ISO'-M.TC.

FLOWN IN OCT. 1974 GEOTERREX PROJECT No. 84-128

41I14SW9519 2 .1B99 HARTY 210 - 00t/