Magnetimeter Survey
MABVEN
GBOUP
”
False Bays Lye11 Island, Q. C. Ialands~, B.C.
I
Placid Oil company
”
I
Es IL Morris, P.&g.
Magnetometer
9kble
1.
Description
of
2.
Geophysical
Instruments
3. Msgnetometer
4. Results
5. H. Il.
of
Survey
Contents
Claims
surveys
and Conclusions
Morris
6, Mapa “A”,
0.lalifications
“B”,
“CD and
“D”
Magnetometer Survey
1, Descrlotion
A.
Claims
of
Ecsrven 270. 1.
Tag x0*
Located March 3l,
post 20 feet
1964.
rune 1500 feet
Island,
23146,
iv0.
Recorded April
3, 1964.
Initial
marker on east side of
B.leen Charlotte
to the left
Islands.
Claim
line
vhich run8
of the location
along the shore for 1500 feet.
B, Marven No. 2
%g 80. 507426.
Located &arch 3l,
post 20 feet
1964.
Record Ho. 23147
Record&April
east of hydrographic
False Bay, Lye11 Island,
rune 1500 feet
north-west
b0rd
east of bydrographic
False l%y, Lyell
nortbveat
507425.
3, 1964.
marker on east side of
Queen Charlotte
to the right
Islands,
the location
of
Initial
along the shore for 1500 feet.
line
Adjoins
Claim
vhich
runs
Marven
Floe 1.
C. Marven 190. 1
Tag No; 507427.
Located March 31, 1964,
post approximately
Record
Recorded April
Iloo.
23148
3, 1964.
Initial
1500 feet north 56’ vest (Meg) of initial
posts of Marven No. 1 a& 2 on the east side of False Bay,
Lye11 Island,
to the left
Qaeen Charlotte
of
the location
the shore for 1500 feet.
Ielands.
line
Claim rune 1500 feet
which rune northwest
along
D. Marven Iio. 4
Tag No. 507428.
Located March 21, 1964.
Initial
of
&lee
Recorded April
poet approximately
initial
Record No. 23149
1500 feet
3, 1964.
north 56O west (Meg.)
posts of Marven No, 1 end 2 on the eaet sid,e of
Bass Lyell
runs 1500 feet
Island,
Qeen Charlotte
of the location
to the right
rune north-west
Islanda.
Claim
line
along the shore for 1500 feet.
which
Adjoin6
Mar-fen Bo, ?*
E. Harven No. 4
Tag No, 507429.
Located March 3l,
Initial
of
1964.
3.+ 1964.
JO00 feet north 56O went (Meg.)
posts of Marven No. I and 2 on the east side of
False Bay, Lye11 Ialand,
post is 225 feet
left
23150
~0.
Racorded April
post approximately
initial
Becord
Queen Charlotte
east of beach.
of the location
line
Islands.
Claim -a
Initial
1500 feet
which runs north-west
to the
along the
shore for 1500 feet.
Z?. Mwven NoTo.6
Located l&oh
Initial
Tag Ro. 507430.
31, 1964.
of %lse
Recorded April
poet approrimatel~
of the Initial
300
x0.
2~51~
3* 1964-
feet north 560 west (btxg.)
poets of Marven Bo. 1 and 2 on the east side
Pay, Lye11 Island,
paat ia 225 feet
to the right
Record
@aen Charlotte
east of the beach.
of the location
along the shore for 1500 feet.
line
Islands.
Initial
Claim runa 1500 feet
which run8 north-west
Adjoins
Marvan No. 5.
6. Marven Ho. 7 l’ag Zoo. 507431,
Located &arch 3l,
Initiel
1964.
Becorded April
post approximately
of the initial
Record No. 23152
3, 1964.
4500 feet north $‘veet
(Msg.)
poets of Marven No. 1 and 2 on the east
side of False Bays Lye11 Island,
Qpeen Charlotte
Islaada.
Claim runa 1500 feet
of the location
line
runs aortbvest
H. Marven Ro. 8
to the left
along the ahore for 1500 feet.
Tag x0. 97432-
Located Harsh 31, 1964.
Iaititi
Record Bo, 23153
Recorded April
post approximately
of the initial
which
4500 feet
3, 1964.
north 56’ vest
&ag.)
posts of Marven No. 1 and 2 on the east elde
of False Bay, Lye11 Ialand,
been Charlotte
Islands.
ruue 1500 feet
of the location
lines
Claim
V
to the right
which IWIE
:tJ
I.
north-vest
along the shore for 190
Marven
9
Ro.
Tag Ho. 507433.
Located l&arch 3l,
Initial
1964.
Post approximately
feet.
Adjoin&
Marven No* 7.
Record Bo, 23154
Recorded April
3* 1964.
6000 feet north-west
posts of Marven Ho0 1 and 2, and 30 feet
of initial
so&&of
creek
mouth on beach, on east side of Fals’e Bay,, Lye11 Island,
Charlotte
location
1500 feet.
‘L-l
Ielands.
line
Claim runs 190 feet
vhieh run8 south-vest
to the left
Queen
of the
along the beach for
Ja Marven No. 1Q
Tag Iio. 507434.
Located March 31r 1964.
Initial
Record
NO.
Recorded April
post approximately
6000 feet
23155
3, 1964.
north-west
posts of Marven Ho. 1 and 2, and 30 feat
of initial
south of creek
mouth on beach on east side of False Bay, Lye11 Island,
Qaeen Charlotte
Islands.
of the location
line
Claim runs 1500 feet to the right
which rons sont&west
along the beach
for 1500 feet.
Instruments
2.,CktODi,YSiCd
A. The geophysical
Serial
Ltd.
instrument
consisted
Eio. 164, as manufactured
of a Magcrometcr BS-180,
by Ed@r Sharpe and Associates
of Suite 803, No. 6 Adelaide
Street
Zast,
Toronto,
Ontario.
1
. ‘u
The magnetometer is portable
diameter
face and weighing
being 13 inches long,
only 24 ounces.
balanced magnet system that
frictionless
instrument
has its
heavy-walled
leoelling
by a ball
the instnunent
the instroment
alloy
action
meaner
a reading
facing
system to be aligned
portion
with
and
of the
The
inside
case with armour plateglass
is attained
a
face.
by suspending the
to the handle.
Thus,
as long as the handle is held
allowing
the operator
him
of a
component.
immersed in fluid
and cup type joint
bangs vertically
in a near vertical
While taking
the horixontal
movaable parts
consists
weightless
and reads the vertica.1
lightweight
The self
instrument
is essentially
which nullifies
earths magnetic field
It
with a 4 inch
about 20 degrees latitude.
faces magnetic
which allows
west with
the instruments
the earths north-south
magnetic
magnetic field.
.
w
The vertical
nullified
component of the earthly
by adjusting
a precision
a compensating mgnet
micrometer
are converted
calibrations
into
for the particular
72,000
division
Although
very sensitive
division
at
of 115 gammas per
at high range, with a total
and has an operational
the
It has an
of 35 gammas permicrometer
g,ammas. The instrument
+120° F*
readings
which contains
instmment.
lov rang* and an average sensitivity
is
by means of
The micrometer
screw.
gammas from a table
average sensitivity
micrometer
magnetic field
is temperature
range of
compensated
temperature
range between 400 and
instrument
my also be used as a
this
dip needle,
this
feature
was not used through-
out the survey.
V
B. The surveying
serial
instrument
consisted
610 51971, as manufactured
of Denver, Colorado.
quadrants and all
was not
compensated
Its
circle
readings
for
of a Bruuton Compass,
by Wm, Ainsworth
is graduated
and Sons
in four
were magnetic in that
the compass
the 26’ magnetic declination
of this
area.
C. Instead a survey chain vhich would be subject
corrosion
thick,
and enagging in the thick
nylon roIewas used.
inserting
colored
twenty-five,
fifty
contrasting
colors
plastic
Ten foot
flagging
and seventy-five
to salt
water
bush, a one quarter
inch
markers were made by
between the strande.
foot markers were of
in order to avoid confusion.
The
0. Magnetometer Survws
The first
r&e
magnetometer survey of the Marven claims
along the claim lines
of the ten claims at the time of
The crew consisted
staking.
Professional
of the writer,
Engineer from Calgary,
practice
in the Province
Hendry.
Provisions
B, C. Airlines
H. E, Morris,
Alberta,
of British
with pewiasion
Columbia,
assisted
to Lockport
where headquarters
by
were established
An aluminum
and 10 horsepower motor was used to run between Lockport
the False Bay area.
flagged
with
Stations
colored plastic
taken at each station
the character
results
were established
flagging,
of the outcropping
mybe Been on Map “A”.
area in which magnetite
at twenty-five
The results
rocks or the beach deposits.
In the vicinity
a grid
system was laid
foot intervals
may be seen on Map “.D”.
were noted on the claim line
readings
in the immediate
area of other
prevented
phase..
stations
and converted
Several anomalous
of Marven No. 10 but further
failed
to show a significant
the weather was experienced
Several storms of short but violent
rPaking the daily
trips
were
nearby treea,
than background readings.
Some difficultywith
initial
The grid
stations
posts
out to cover an
and marked by blazing
readings
The
of the initial
was known to outcrop.
vicinity
were
with a note describing
Magnetometer reading6 were taken at the grid
to gammas.
and
every 100 feet and
Magnetometer readings
and recorded together
of Marven No. ? and 4 claims,
speed
to
by D.
andcquipment were flown from Sandspit
in the cabin owned by the Department of Fisheries.
skiff
was
during
duration
to Palse Day In the skiff.
this
During
the month of August the writer
Pay area with a crew to detail
of the magnetite
outcrops.
supplies
were transported
on Placid
“Chechakos from Qceen Charlotte
were established
gold placer
writer,‘D.
claims
on Shuttle
transportation
A grid
and s
Oil Company’s cruiser
City
to Shuttle
Island,
of twenty-five
‘Phe first
time was spent checking
stations
consisting
foot
stations
permanent reference.
southeast
outlined
built
from this
Considerable
located,
Stations
sides of the grid
on the first
along the
bordering
Several
base.
in order that
The thick
underbrush,
the beach, presented
difficulty
on the northeast
stations
was made so as to circle
500 feet
beyond the grid
a line
and
and numbered for
were made in an unsuccessful
Finally
not
in surveying
were flagged
extensions
to close the magnetic anomaly.
out
were established
problems but considerable
lines.
was laid
lines
were accurately
measuring the grid
Island.
the exactness of the lines
of hedges of salal
only.access
Island
horsepower outboard motor was used for
beach at low water and the grid
the grid
of the
The
snug anchorage on SInrttle
over the magnetic anomaly which was roughly
magnetometer survey.
where
Ths crew consisted
between False Day and Shuttle
consisting
Island,
G. Wright and J. Good.
Chechako was moored in a small
skiff
The crew* equipment and
in the abandoned cabin near the
Dale, J. Morris,
and a small
to the False
the magnetic anomaly in the
vicinity
headquarters
returned
and
attempt
of magnetometer
three sides of the anomaly some
boundaries.
Twenty-five
foot
stations
,were established
and flagged
for permanent reference.
magnetometer anomaly forms mpp”C” and the grid with
circle
The
its
surrounding
forms map “RN.
a. Results
and
Conclusions
While taking
magnetometer readings
100 foot stations,
average reading
a vernier
vernier
only four anomoloue readings
for the 82 stations
as lying
a general
below or above the general
background were considered anomolous.
the magnetometer,
it
represent
magnetic minerals
in the gravel
#l,
19, 23 and 76.
were not taken in the vicinity
part
the reading
is felt
Additional
of station
is an isolated
The low readings
area,
cable and equipment
affect
at stations
known if
background was
and any readings
As care was taken to avoid abandoned logging
readings
The
between 5520 and 6096 gammas representing
reading6 of 197 and 237 respectimly,
which.vould
were noted.
was 6236 gammas representing
Arbitrarily
reading of 217.
determined
along the shore using
the anomolous
magnetometer readings
#l and thus it
high or plrt
at stations
or bedrock
is not
of an anomoloue
#19 and 23 were found to form
of the anomolons area which has been caused by the outcropping8
of magnetite
station
stations
on all
both on and near the beach.
76 yas checked by establishing
as shown on the insert
sides of the grid using
the anomalous feature
out exteneions
Although
to be less
in any direction
the anomolous readings
The high reading at
a small grid
map on map “A”.
twenty-five
A later
foot
than fifty
for at least
approximately
of ten foot
stations
feet
extension
showed
in diameter,
wit&
one hundred feet.
coincide
with the
-
contact
rocks,
between thinly
bedded argillaceous
where contact-metamorphic
the lack of mineralized
anomoloue readings
limestone
deposits
might be anticipated,
outcrop and the @mall aerial
do not juetlfy
further
along the beach shows a general
which do not show discernible
at various
outcropping
attitudes
within
is to be found only et station
dlorlte
and red to pink granite
and gravela
vol.cenio
rocks
At three points,
rocks,
lenses
Although
diorite
32, the abundance of grey
pebbles along the beach indicate
the presence of one or more intrusive
bodies within
Thus, the geology is favorable
minerals
of
work.
occure as thin
the volcanic
outcrop
area.
of
dip or strike.
15, 76 end 79 limestone
extent
geoplqslcal
The geology es may be eeen from the outcrops
namely stations
end volcanic
the False Bay
for the development of
end the presence of magnetite
at station
19 is proof
thereof.
Map “B” shows the first
magnetite
with
outcrop area.
the thick
confidence
Thus, it
underbrush were largely
wee felt
responsible
effort
for
of the grid
the lack.of
system.
should be made with a
crew to complete an accurate
detailed
magneto-
This program wee completed in August 1964 and the
resulte
are shown on Map @c*.
stations
have been converted
1000 gamma intervals.
arbrltrarlly
to cover the
weather and the difficulty
of the surveying
that a determined
large
meter survey.
system that was qde
The inclement
in the accuracy
sufficiently
grid
The vernier
readings at the grid
to gammas and the map contoured
General magnetic buckground has been
set between 5000 end 7000 gammas and the anomaly
on
outlined
using theee perimeters
The open-cut
square feet.
by previous
covers an area of 48,750
exposing the magnetite
ownere, Is not located
ore, made
on the most favorable
part
of the anomaly.
Bear the grid
found at station
edges a high reading of 9852 gammas was
E 400 and a mrrov
band of low readings
than 5000 gammas was found near station
P 250.
amaIl areas of anomoloue readings lie
outside
meter anomaly,
the grid
it
Is recommended that
hopes of enlarging
the two small anomalies.
recommended that a diamond drilling
spring
less
As both these
the large
magnet+
be extended la
It Is further
program be planned for the
of 1965 In order that the average depth of magnetite
xay be established
diamond drill
F.150,
on the large
magnetic anomaly.
holes should be located
pine vertical
at the following
stations
B 225s F 3005 H 175, H 250, H 325. J 200, J 275 and J 350..
Iio attempt
should be made to estimate
the magnetometer readings
information
country
concerning
rocks.
the depth of the ore from
because of the lack of geological
the thlclmess
‘i’he proximity
and attitude
of the nmgnetite
beach and the ease with which the deposit
shipped to the %&way concentrator
warrant
of the volcanic
deposit
to the
could be mined and
the evaluation
of the
ore body.
In hopes of extending
to survey a reconnalsance
some 500 feet
of this
the magnetic anomaly,
line
beyond the grid
around three sides of the grid
boundaries.
survey are shown on map eps,
prospecting
It was decided
The negative
Several
reeults
days were spent
to the east of the anomaly, along the aountalnslde
df.
4
A&da
without
finding
prospecting
further
magnetite
warndone vithont
the prospecting
results
of thick
system) aad as the
second growth vegetation,
must be considered
Respeotfully
H. R. Morris
December 15% 1964
As the
the aid of the magnetometer
(which was being used on the grid
mountain side consists
outcrops.
inconclueiveo
sabmitted
w
5*
II, Il. Morris
A.
@ralifications
I, Harry R, Morrlsr
am by profession
Consultant
in the City
residing
a Geological
of Calgary,
Engineering
Province
B. I graduated in the year 1944 from the University
Columbia with a Bachelor
Geological
Engineer and returned
graduate
studies.
capacities
Since that
for a number of oil
a Geological
Rngineering
C. I am a Registered
Alberta,
II
: :
“b
of Applied
in 1945 for a year of p&t
time I have worked
%gineers
since 1951.
Rngineer in the Province
of the Province
engineering
in that province.
the Alberta
Association
of Petroleum
report
entitled
Placid
personal
Oil
of British
Geologists.
Q. C, Islands,
MARVRR
B. C.
Company” is a summary of the work done under ay
direction
during
the year 1964,
H. R. Morris,
December 15, 1964
Calgary,
Colnmbia
I am a member of
eE&gnetometer Survey,
GROUP, False Bay Lye11 Island,
of
from the Association
to practice
D. The attached
in various
and mining companies and as
with a Ron-Residence License
of Professional
of Britieh
Science Degree as a
Consultant
Professional
of Alberta.
Alberta
Geological
P+Rngh
Engineering
Co,nsultant