GEOL & RAD SUR RPTE.O. 463209 TO 463216 INCLUSIVE i j
MONMOUTH TOWNSHIiP, ONTARIO
INTRODUCTION
In January, 1976, twelve claitrs were staked by R. S. Brooks for
Imperial Oil Limited near Tory Hill, Ontario in Monmouth Township. The
claims are situated in Concession XI, Lots 15 and 17; Concession XII, Lots
19,21,22; and Concession XIII, Lot 22.
460883 and E.O. 463209 - 463216 inclusive.
LOCATION AND ACCESS
Highway 121 north of Tory Hill.
Claims E.O. 463209 - 463216
way 121.
railway track which runs through
Essonville Line which turns off High-
SURVEYS
tablished for control.
100 feet. The use of pickets and blazed
appease the environmentalists and surface
metric readings were taken at 50 foot
level, using a McPhar TV-1 scintillometer
ing principles of the instrument are
They bear the numbers E.O. 460880-
located 1/4 mile west of Tory
Gibson Road which branches off
and radiometric surveys were
spacings with stations flagged every
trees was kept to a minimum to
right owners in the area. Radio-
intervals along each line from hip
The specifications and work-:
described in the Appendix.
i
The. regional geology of the d,aim area has been published in
O.D.M. Map 2174 (Monmouth Township). Results of the geological mapping
conducted by Imperial Oil Limited are presented in Figures l and 3.
j
The claim area is underlain by metasediments belonging to the i
Grenville Supergroup, in contact with t\]e Glamorgan Granite Gneiss. "Feld
spathic biotite - hornblende paragneiss, quartzite, and white marble are
the predominant rock types. Some diopside - actinolite skarn and granitic
pegmatite occur as small stringers in tb|e metasediments.
The Glamorgan Granite Gneiss, which lies in the northwest por
tions of both claim groups, is composed of a mixture of coarse grained
pink feldspathic gneiss and granitic pegmatite. Areas of no outcrop are
covered with glacial overburden.
The metasediments follow the strike of the Glamorgan Granite
Gneiss contact which changes from OSO0 in E .G. 460880 - 460883 to 030O
in E.G. 463209 - 463216. Dips vary between 30O SE and 500 SE.
RADIOMETRIC SURVEY
Results of the radiometric sur|vey are presented in Figures 2
and 4. Readings give the total radiation count in counts per minute
(c.p.m.). The background count for the area is 2,000 c.p.m. Isolated l
radiometric highs were encountered in both pegmatite and skarn as depicted
on the maps.
FEBRUARY 21, 1977 BONNIE LOWE
GENERAL DESCRIPTION A?!D APPLICATIONS OF 'THE KcPHAR MODEL TV-1 GAMfiA RAY SPECTROMETER
The gamma ray detecting principle lies in the sodium iodide crystal. j
Gamna rays entering the crystal, interact with the crystal atoms, resultinqj s
in free electrons and light emission. The optically coupled photo-
multiplier converts the light emission to electrical pulses. The. magnitudes
of the electrical pulses bear a relationship to the energy levels of the
intercepted ga-irna rays. ' ,' ^ - ., - p ' ' . i -
Various radioactive elements have characteristic gamma energy spectrurns. l ; . . .
The nature of the spectrum for a jgiven element can be used to advantage
in .identifying it in the presence of other radioactive elements'. Fi.g. 2 j
" ' ' ' shows spectral curves for the three main elements of interest in radioactive
surveys; potassium, uranium and thorium.
Thorium emits gamma rays v/ith energy levels exceeding 2.5 t-'ev. The
highest energy radiation from potassium is about 1.6 Mev. The three vertical
lines marked Tl,T2 and T3 show th^ location of the threshold settings of the
TV-1 -spectrometer after the instrument has been calibrated. .Threshold T3 at
2.5 Mev. allows only those electrical pulses tp be registered whose i *
amplitudes correspond to gamma rays with energy levels above 2.5 Mev. T2
similarly responds to ganma energj/ levels above 1.6 Mev. 'When both thorium
and uranium are present during a fneasurement, than the reading at T2 contains
c
fe
counts resulting from both elements whereas T3 contains counts from
thorium only.
l
It is possible then, to subtract the count in the T2 reading,
leaving the count from uranium only. The count representing thorium
in the T2 reading is a fixed multiple of the T3 reading. In the TV-1
spectrometer, this multiple is 3 .5. That is, ths count in T2 due to
uranium is T2 - 3.5T3. A thoriujn calibrating source and calibration
procedure, provided with the ins^riraent, ensures that this i s alv/ays
the case.
RTGirn
2 ' 4 6• i-- . i r , (v^ i 1.0 1.2 1.4 1.6- -IS 2.0 2.2 24 -2,6 -.- /IGAMMA RAY ENERGY '
MEV,
File.
GEC
TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.^TEI
Type of Survey Ground Geological and Radiometric Township or Arra Monmouth Township—-——-————^—— Claim holHpr(s) R. S. Brooks - Imperial Oil Limited
Author of Rppnrt Bonnie Lowe_____._________________
Addrcs*; 10 Roxbofouph St. W. Toronto f Ontario—i-——
Covering Dates of Surwy September 6-29. 1977_____ (linccutting to office)
Total Miles of Line cut 15.2—.——.-—————.^—.^——
SPECIAL PROVISIONS CREDITS REQUESTED
ENTER 20 days for each additional survey using same grid.
~, i-i Geophysical
Geochemical. AIRBORNE CREDITS (Special provision credits do not apply to airborne surveys)
Magnetometer. .Electromagnetic. . Radiometric (enter days per claim)
HATR- . Author of Report or Agent
PROJECTS SECTION j . p
Checked by. .date.
(prefix)
.E.P....
TOTAL CLAIMS__li.
Show instrument technical data in each space for type of survey submitted or indicate "not applicable"
GEOPHYSICAL TECHNICAL DATA
(specify for each type of survey)
MAGNETIC ^ 5 times background radiometric count
Instrument -——————^—-.————.——-^—^^^^^^-^———-———,—————.^.————.————.
Frequency-—-—^—^^——--.—.——-——^^.—--—.-—-—.—H-—.-,—.——.-^^^^-——^^^—-.—...^.—....^.— (specify V.I,.F. station)
Instrument^^^^^^^^.^^^^^^^^.^^^^^——
Corrections made.
Instrument_______McPhar TV"! Scintillometer Values measured Total radiation count in counts per minute (c.p.m.) Energy windows (levels) 0.2 Mev—^,..——————..,-—^,-—.—,--.—-.^————— Height of instrument_3 feet above ground____________Background Count -2000 c-.p,™,
Size of detector 1X1 1/4 Inches——-——————-—.——.——^—-————.-—,.......— Overburden 10 feet glacial overburden___^___^________________________
(lype, depth — include outcrop map)
OTHERS (SEISMIC, DRILL WELL LOGGING ETC.) Type of survey——.—-——.————--—.—-——-.^^-.^^^^-^———-———.——-—————^-——-.———
Instrument .-——-^—-^^^-—-—-—————-—-^-——-.-—-f—-..—-—.——.——————-——-—.-..—.
Accuracy_____________________________________________________ Parameters measured.
AIRBORNE SURVEYS Type of survey(s) ___ Instrumcnt(s) —————
(specify for each type of survey)
Accuracy^^^——————————. (specify for each type of survey)
Aircraft used.———————.^^^—^^—^^^^—^—^—..f....—— Sensor altitude— Navigation and flight path recovery method.
Aircraft altitude_______________________________Line Sparing Miles flown over total area________________________Over claims only.
GEOCHEMICAL SURVEY *~ PROCEDURE RECORD
(Nature of Material)
Average Sample Weight———————
Method of Collection.^———————
Sample Depth————— Terrain,——————-—
ANALYTICAL METHODS
Values expressed in: per cent P- P- m- p. p. b.
D D D
Others________,- . ,-——-—-—-........—. Field Analysis (-
No. ____________
Extraction Method.
Analytical Method.
Reagents Used -———.—
XVII
LO
O.
1^63656
8 10 " '2 13 14 15 16 17 18 19 20 21
B
Anstruther Twp. M.45 200
LEASES
MINING RIGHTS ONLY SURFACE RIGHTS ONLY
ROADS IMPROVED ROADS KINGS HIGHWAYS
RAILWAYS
MINES
C.S.
This Map Is Not To Be Used - FOR SURVEY PURPOSES
400* Surface rights reservation along the shores of all lakes and rivers.
Original shoreline shown thus:
For status of summer resort locations shown
Please contact Ministry of Natural Resources.
DATE OF, ISSUE
J.R von K.
DA V 'S L . A KE. OROUP
TOR Y HILL PROSPECT
MOMMOUTH TOWNSHIP
CONCESSION xu . LOTS 19.21 and 22 CONCESSION xin t L OT 2 Z
G E OL 0 G Y
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TORY HILL PROSPECT
GEOLOGY
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TO
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r 1 s LAKE: GROUP TORY HILL PROSPECT
M O M M o u T H TOWNSHIP
CONCt55 i ON XI
2.2
SCINTILLOMETER
^ RflPlATlON
TORY HILL P ROSP&CT
MO N M OUTH TOWNSHIP
COWCESS/ON XI L OTS / 5 *
SCINTILLOMETER SURVEY WITH , TV-1 SCINTILLOMETER
x.
SURVEY IN COUNTS PEK MINUTE: B ACK& R o j Np R Al ' 2.0
3-5 X BACK^OUNP COHTOUR
> S x BACKGROUND "CONTOUR
to-__J-fo 3( ^id lin
B U i l d j no
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