^1?A10SW0103 2.11354 STOCK 010
Report on a VLF Electromagnetic Survey
on the
Brightwest Resource Explorations Inc. Property
Stock Township, Ontario
by
William O. Karvinen, Ph. D.
May 30, 1988
?, o t^BB
RECEIVED
JUM '/
W.O.Karvinen S Associates Ltd.
Summary
A VLF electromagnetic survey of the Brightwest claims in Stock Township indicates no detectable anomalies to be present. Since it is known that the bedrock consists of a variety of lithologies, this lack of anomalies may be due to the masking effect of the overlying glacial sediments which contain sequences of conductive clays and reach thicknesses in excess of 100 feet.
42A10SW0103 2.11354 STOCK 010C
Table of Contents
page
Introduction................... . . . . . . . . . . . . . . . . . l
Location and Access................... ........ .. l
Property Description................... . ... . . . . . l
Previous Work................. ... . . . .. .. . . . . . . . . l
VLP Survey................. .. . . .... . . . . . . . . . . .. . 2
Results....................... ...... . . . . . .. . .. . . 3
Conclusions................ . . . .. . . . . .. . . . . . . . .. . 3
Figures
Fig. 1: Location of Property in Timmins Area
Fig. 2: Detailed Location of Property
Maps
VLF Dip Angle Readings Scale: l" ~ 2 00'
Contoured Fraser Filtered Dip Angle Data Scale: l" * 200'
- l -
Introduction
During the period of May 12 to May 18, 1988, W. O. Karvinen s Associates Ltd. carried out a VLF electromagnetic survey on thirteen claims held by Brightwest Resource Explorations Inc. in Stock Township near Timmins, Ontario. Although no obvious conductors were known to exist on the property based on airborne work in the area, it was felt that perhaps local variations in the electromagnetic field could reveal some information about the bedrock.
Location and Access
The Brightwest claims are located in west-central Stock Township about 30 km. east of Timmins in Northern Ontario (Fig. 1). More specifically, the claims are in four separate groups in lots 10, 11 and 12 of Concessions II and III (Fig. 2). The eastern-most group is accessible via an all-weather concession road while the remaining groups can only be accessed by bush roads. The lack of a bridge over the North Driftwood River near the northwest corner of the eastern-most group prevents easy access to most of the property.
Property Description
The property comprises 13 unpatented mining claims numbered as follows: P90850, P915444 -P915446, P924034 - P924038, P997451 - P997454.
Previous Work
Because of the total lack of outcrop in the general vicinity of the claims and the fact that the area was considered to be underlain by sediments with very little potential for the discovery of ores, the Brightwest ground has seen very little exploration in the past.
i \
/J
TimminsStock Tp.
Scale Mn,r 8miles
Location Map
Fig. 1: Location of Property in Timmins Area
G E
RM
AN
TW
P.
M O O t-
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2
In 1945, Broulan Porcupine Mines Ltd. carried out a ground magnetic survey in southwestern Stock Township which covered part of the current claims. The results revealed low magnetic relief in the area.
In 1983, Cominco Ltd. conducted reverse-circulation drilling over a large area of Stock and nearby German townships. Nine of these holes were either on or very near to the Brightwest claims. The results of this work indicated a variety of volcanic, komatiitic and sedimentary rocks to exist in the area. Cominco also completed a ground magnetic survey, part of which covered the northern portions of the Brightwest claims.
The area was covered by an airborne electromagnetic and magnetic survey in 1983 which was sponsored by the Ontario Geological Survey. These results show no conductive zones to be present on the property.
In 1984, the Ontario Geological Survey carried out sonic overburden drilling in Stock Township to gain a better understanding of the glacial history and of the bedrock. Holes near the Brightwest ground indicate the presence of komatiites and sediments.
VLF Survey
The VLF electromagnetic survey was carried out with a Crone Radem unit (see Appendix) using Cutler, Maine as a the transmitting station. Dip angle readings measuring the distortion in the primary field were taken at 100 ft. intervals along cross lines spaced at 400 ft. intervals {see map). The results plotted in degrees north (N) or south (S) are presented on the accompanying map.
- 3 -
Results
The primary field over the Brightwest claims is relatively uniform and only varys by a few degrees. Thus no conductors in bedrock or in overburden are indicated by the VLF survey. The lack of anomalies may be due to the masking of bedrock conductors by the extensive cover of glacial sediments, including conductive clays, which reach thicknesses of well over 100 feet on the property.
Conclusions
The Brightwest claim groups in Stock Township show no VLF conductors. This may be due to a uniformly conductive bedrock or the conductive variablility is masked by the overlying glacial sediments.
(\ , f
William O. Karvinen, Ph.D May 30, 1988
CERTIFICATE
I, William Oliver Karvinen of 32 Lakeland Point Drive, Kingston, Ont., Geologist and President of W. O. Karvinen b Associates Ltd., do hereby certify that:
the information contained in this report is based on personal observations and reports deemed to be reliable;
I have on interest, directly or indirectly, nor do I expect to receive any such interest in the property or any affiliate, nor do I beneficially own, directly or indirectly, any securities of Brightwest Resource Explorations Inc.;
I hold a Doctorate of Philosophy and an Honours B. Se. in Geology from Queen's University (1974 and 1968) and a Master of Science in geology from the University of British Columbia (1970);
I am a fellow of the Geological Association of Canada;
I have been actively employed in my years and in private practice as explorationist since 1978.
profession for 20 a consultant and
Kingston, Ontario May 30, 1988
William O. Karvinen
APPENDIX
Technical Description Of Crone Radem VLF Unit
CRONE GEOPHYSICS LIMITED3607 WOLFEDALE ROAD, MISSISSAUGA, ONTARIO, CANADA L5C 1V8
TELEPHONE: (416) 270-0096 CABLE: CRONGEO. TORONTO TELEX- 06-961260.
INSTRUCTIONS FOR OPERATIONOF THE
RADEM ULF-EM RECEIVER
l ) Transmitter Static-no
The OLF Communication Broadcast stations are positioned throughout the world. Numerous ULF stations transmit steadily except for maintenance periods usually of 1/2 to 1/3 days per week. The RADEM receives any of 7 of these stations with selection by means of a switch. The useable range of these stations varies widely with power and transmission conditions but is usually between 1000 and 5000 miles.
A station should be selected that is located in the same direction as the regional strikes. For example, if the geological strike is east-west then a station located east or west of the operator should be used. If in doubt of the geological strike two orthogonal stations should be read.
(a) Dip Angle of Resultant Field
This is the angle of inclination, measured from the horizontal in degrees, of the direction of the resultant ULF field. The ULF field is normally horizontal (0 degrees dip). The dip angle measurement is independent of the strength of the field and the gain setting of the RADEM receiver. Uhen plotted on a profile the dip angles usually form a cross-over pattern above the conductor as with the standard vertical loop EM method.
To measure the dip angle the RADEM is first held with instrument face horizontal and rotated until a null is obtained (visual minimum on the field strength meter and audio null). This aligns the base of the Radem in the direction of the ULF field. The Radem is then held vertically and tilted from right to left until another null is obtained. The instrument is held steady in this null position and the dip angle read from the inclinometer. Note that the arrow in^CRONEi points j toward^ J he. .conductor, i f the arrow points north the dip angle is recorded as say .IC^decirees north.
November 1986
(b) Horizontal Component of the Field Strength
This is simply the strength of the field in the horizontal plane. It is the maximum reading obtained from the Field Strength meter when the instrument is rotated in the horizontal plane. It is therefore at right angles to the null position. It is usually read after the dip angle measurement simply by holding the RADEM horizontal, and adjusting position for maximum reading in the horizontal plane.
The field strength of the ULF stations drifts with time. This drift is particularly severe during sunrise and sunset periods. A base station should be established in a normal area and the RADEM adjusted to a Horizontal Field Strength of "200" on the "0 - 300" scale by means of the Gain control pot. The drift correction is then applied to all stations as in a magnetometer survey.
(c) Out-Of-PhasB Measurment (usually not measured)
The secondary field from a ground conductor often is not in the same phase as the primary field, therefore the resultant field will have an out-of-phase component.
To measure the out-of-phase component as a percent of the normal primary field the volume control of the amplifier must be set up as a standard. This is acheived at a base station in a normal area. The Field Strength range switch is placed in the "0 - 300" position. The RADEM held with the face horizontal and the body rotated until a maximum field strength reading is obtained. In this position the Gain control is adjusted until the meter reads "200". The Gain control is left at this setting until the base station is read again usually one to several hours later. The out- of-phase reading is the minimum position of the field strength meter when the dip angle of the resultant field is being measured. It is read at the same time as the dip angle is being read with the RADEM in the vertical null position.
The out-of-phase measurement is sensitive to a lower order of conductivity than the dip angle measurement. For this reason it is often not recorded unless poor conductors are being sought.
FraseryFi ItcrjnQ
Reference: Geophysics, Volume 34, No. S, December 19G9."Contouring of VLF-EM Data"
This is a simple operation on the dip angle readings that more clearly defines anomalous areas. It requires a consistent reading interval (i.e. readings every 50', 100', 25m, 50m etc.). It produces data which is then contoured with the highs representing the conductor axis, much the same as a Horizontal Field Strength survey although lacking the detail possible with the field strength measurement.
) Recording of
When recording field data it is essential, as in any other geophysical survey to record as much information as possible. Ulhen conducting a RAOEM survey it is very important to record topographical features that you encounter along the survey line.
Below is an example of a typical field sheet from a RADEM survey.
CLIENT : PROJECT;
Crone Test
LINE: 5+00E DATE: 11/05/86
Station Out-of- Dip Angle Field Strength Remarks Phase '/. Degrees Reading Time Drift
10N Base
10+50N 1H00N 11+50N 12+00N 12+50N 13+00N 13+50N 14+00N 14450N
10N Base
200046600
0
02N6N12N22N20N8NIS
12S
100 9--00 0
10099
101102118185263247164
9:02
9:04
9 = 069:08
9=10
9:12
9=14
9:17
9:20
0-1-1-2-2-2-3-3-4
114 10:10 -14
Corr,
100
10098
100100116183260244160
100
Lake Lake
Road
x-over
.TenBe.r.gJwre.-Ef fPfi t
Temperature drift may cause the field strength meter to null well below the zero mark. This should be corrected by the screw adjustment below the "Normal" switch on the front panel. Adjust with the volume pot at "0".
(G ) Power Supply
Two of U216 Eveready 9 Volt Batteries - Life: 20 hours continuous.
List of Available Stations on tha RADEM unit
Code Letter
CM
SWAMHPRENCBOFMSODHNYJTJBA
Station and Location
Cut ler , Maine
Seattle, WashingtonAnnapolis, MarylandLaulualel , HawaiiPuerto RicoRugby, EnglandExmouth, AustraliaBordeaux, FranceMoscow, RussiaOdessa ( Black Sea )Helgelaend, NorwayYosani , JapanTokyo, JapanBuenos Aires, Argentina
Frequency
17.8 KHZ24.0 KHZ24.8 KHZ21.4 KHZ23.4 KHZ28.5 KHZ16.0 KHZ22.3 KHZ15.1 KHZ17.1 KHZ15.6 KHZ17.6 KHZ17.4 KHZ20.0 KHZ23.6 KHZ
Call Sign
NAA
NLKMSSNPMNAUGBRNWCNWUUMSEWBJXZNOTJG2AR-
VM.F.WEEKLY. MAINTENANCE SCHEDULE (August 1986, Subject to Change)
CM 2300 to 0900 UT First Thursday-Friday of Month 2300 to 0700 UT All other Thursday-Fridays
SW 1600 to 2400 UT each ThursdayDuring Daylight Saving Tine 1500 to 2300 UT each Thursday
AM 1200 to 2000 UT, Testing 2000 to 2200 each Tuesday
H 1800 to 0400 UT last Wednesday-Thursday of Month 1800 to 0200 UT all other Wednesday-Thursdays
PR 1200 to 2000 UT each WednesdayTesting 2000 to 2200 each Monday
E 1000 to 1400 UT each Tuesday
NC 0000 to 0800 UT each MondayMay be off 0000 to 0400 UT on Tuesdays
YJ 2300 to 0900 UT First Thursday-Friday of Month 2300 to 0700 UT all other Thursday-Fridays
Ministry ofNaturalResources
Ontario
Report of Work(Geophysical, Geological, Geochemical and Expenditures)
DOC
w{
1PA10SW0103 ?. 1 135-t STOCK
Pi ft t*T900
Type of Survey(s)
Geophysical (VLK)"Claim Holdor(s)
Brightwest Resource Explorations Inc.,Address
67 Richmond St. W., TORONTO, Out. M5HSurvey Company
W. 0. Karvinen 6c Associates Ltd.,Name and Address of Author (of Geo-Tochnicai report)
William 0. Karvinen, 32 Lakeland Pt. Dr.
lownship or Area
Stock Twp ^Prospector's Licence No.
T - 4967
1Z5Date of Survey (from Si t o)
12 05 ..Day Mo. l Yr.
18 05 88 Day j Mo. j JrV.
Total Miles of line Cut
13 miles
Kingston Ont. K7M AE7Credits Requested per Each Claim in Columns at right___ Mining Claims Traversed (List in numerical sequence)Special Provisions
For first survey:
Enter 40 days. (This includes line cutting)
For each additional survey: using the same grid:
Enter 20 days (for each)
Man Days
Complete reverse side and enter total(s) here
RECE1JUL 4
MINING LANDS
Airborne Creaits
Note: Special provisions credits do not apply to Airborne Sutveys.
Goophysicai
- Elcctroniagnotic
- Magnetometer
- Radiometric
- Other
Geological
Goochemical
Geophysical
- electromagnetic
V J*-®iotomotcr- Radiomoi ric
1988- Other
SECTIONGeochemical
Days per Claim
20
Days per Claim
D;iys per Claim
E. lee uomagnet ic
Magnetoriieter
•^SrvT^Jk/r^i 'F^iPM^ n?TT7Expenditures (excludes power stripfijji)j)l^)((( ,, ^,jl \Wll?Type ot WorK Performeo
——
Gale
ormoo on Claimts) i
ulation o^ Expenoiture Days Credits
Total E xpencmures
S -:-
ip '" wa8 .***Total
Days C( eons
15 =
Instructions Total Days Credits may no apportioned at t i c claim loltler's choice. Enter number ot days credits per rlaim selectee in columns at right.
'l
Mining ClaimPrefix
P
J
Number
905850
915444
915445
915446
924034
924035
924036
924037
924038
997451
997452
997453
997454
Expend. Days Cr.
—— - ——
-—— ---
- --- —
-
Mining ClaimPrefix
N 1AI1IO Al-iSl-
J
H f
R
Number
CifcOl OGtCAL SUN
SSMTINH MILS
IL^JMT
ECQRDiE
JUN 06 198
Total nur c aims co report ot
For Office Use Only
Expend. Days Cr.
IV
—— ——
— - ——
— ——— -
^™ —— - . .
] -
rmer of mining j vered by this . ^ w o r K . j J- -J
SITotal Days Cr.j Date Recornea M n inq Rct/j/der/ j j A Recorded i . J*\ i * l J /i
DateJune 23, 1988
Cei tifiration Veniyinn F^nporl of Woikl hert'bv certify that l lin ve ;i personal ,md iM*im;iif' knowk'nqr ot the f.icfi SIM lorih in the Rt'oon oi Work annuxefi herno, havmp portormetJ l ho work OT witnessed same durum iind/oi :ittei ils completion ond the .inru'xt'ti foporl ts true'.
Wi l l i am O, Karvi non , 3? Lake l and Pi . f)r . , Ki n^si on , Ont . K7MDat Curtitieo hy \Siqnaiurei
f j
REFERENCES
AREAS WITHDRAWN FROM DISPOSITION
M.R.O. - MINING RIGHTS ONLY
S.R.O. - SURFACE RIGHTS ONLY
M.+ 5. -MINING AND SURF ACE RIGHTS
Datcrlptlon Order No. Data
R(s*tv*forrerrioticKiolpurpol*) under Ste 3 P L A
ftppl - *-*V-.o
4- 1 0,
Deposition
S R O
fi ft
Filo
188513
GERMAN TWR
42A10SW0103 a. l 1354 STOCK 200
CLERGUE TWR
BOND TWR
a:h-cr o-j<
LEGEND
HIGHWAY AND ROUTE No.
OTHER ROADS
TRAILS
SURVEYED LINESTOWNSHIPS, BASE LINES. ETC. ,LOTS, MINING CLAIMS, PARCELS, ETC
UNSURVEYED LIMESLOT LINESPARCEL BOUNDARYMINING CLAIMS ETC.
RAILWAY AND RIGHT OF WAY
UTILITY LINES
NON-PERENNIAL STREAM
FLOODING OR FLOODING RIGHTS
SUBDIVISION OR COMPOSITE PLAN
RESERVATIONS
MARSH OR MUSKFG
MINES
TRAVERSE MONUMENT
DISPOSITION OF CROWN LANDS
TYPE OF DOCUMENT SYMBOL
PATEN T, SURF ACE 8. MINING RIGHTS .............,...,, *
. SURFACE RIGHTS ONLY,....................... O
, MINING RIGHTSONLY ^,,..................^. ©
LEASE, SURFACE A MINING RIGHTS..:.................. H
" .SURFACE RIGHTSONLY..^...,................... H
" . MINING RIGHTS ONLY........^.....^............. H
LICENCE OF OCCUPATION ...............,^.,.....,..,.. T
ORDER IN COUNCIL ...................................... OC
RESERVATION ..,..^............^.,,................... (J)
CANCELLED . ..............,.......................... ®
SAND 8- GRAVEL .............,............................ ©
NOTE: MINING RIGHTS IN PARCELS PATENTEOPRIOfl TO MAY 6, 1913, VESTED IN ORIGINAL PATENTEE BY THE PUBLIC LANDS ACT, R S.O. 1970. CHAP 3BO. SEC. 63, SUBSEC 1
SCALE: 1 INCH ^ 40 CHAINS
O 1OOO ?OOO woo 6000 BO 00
O 700 METRES
1000(l KM)
3000 (2 KM)
TOWNSHIP
STOCKMiN.R. ADMINISTRATIVE D IST
TIMMINSMININt; DIVISION
PORCUPINELAND TITLES/ REGISTRY DIVISION
COCHRANE
11 IN 15
Ministryof L andNatural Management
Resources B ranch
Ontario
DiU MARCH, 1985
-r
Number
G-3248
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Location Map
VLF DIP ANGLE READINGS
E GC JRCf
INC
Survey
A ssocia tes Ltd MAY 1988
