42L04NE0203 2.3043 METCALFE LAKE 010

GEOLOGICAL

REPORT

b y

W. YZERDRAAT

and

P. L A W N I K A N I S

General

This report to the Ontario Ministry of Natural Resources

covers geological work performed on sixteen claims in the Metcalfe Lake

Area, Thunder Bay Mining Division. The bulk of the survey work was done

by the second author during early July and early September, 1979.

The claims traversed are part of a 32-claim group covering

the southern part of McDonough Lake, almost all of Metcalfe Lake, the

area between these lakes, and the area south of McDonough Lake. An

earlier geological report to the Ministry, dated 1979 01 06 and signed

by the present senior author, dealt with seven claims in the northern

sector of the same group. In the following, reference will be made to

this earlier report.

The geological work on claims TB 457149, 457150, 459704,

464503 to 464505, 464507, 46450S, and 465131 to 465134 was reported to

the Mining Recorder at Thunder Bay on July 14. Further work, on claims

TB 464509 and 464510, was reported on September 3, and finally the work

on TB 459700 and 459701 was reported on September 14, 1979.

All claims covered by this report are recorded in the name

of Walter Yzerdraat of Ottawa, Ontario.

LOCATION AND ACCESS

A detailed description of access routes to the Metcalfe-McDonough

Lakes area can be found in the earlier geological report by the senior author;

briefly, there are three ways to reach the grounds: from the north by walking

in along the. Tashota-Onaman Winter Road which traverses the grounds 8 km south

of the CNR Transcontinental Line near Tashota; from the east by flying in over

a distance of about 70 km from Cordingley Lake north of Nakina, and from the

south by flying in over a distance of some 60 km from Nezah Lake, just south

of Ontario Highway 11 between Longlac and Beardmore.

The centre of the claim group is at latitude 50 10' north,

longitude 87O 39' west; both lakes covered by the claim group are shown on

Mining Map M 1408, and the general area is within the boundaries of NTS map

sheet 42 L/4.

GENERAL GEOLOGY

Various authors have summarily described the geological character

of the Metcalfe Lake Area (see the previous geological report). All volcanic

and metasedimentary rocks on the claim group are of Archean age. Concordant

mafic intrusions, here designated as amphibolites (le) are slightly younger,

while all gabbroic and felsic intrusions may be of Proterozoic age. The

latter conclusion is based on the rock fabric resulting from tectonism, and

on mineral composition. The greenstone sequence can be considered as part of

the Wabigoon system. Most of the surveyed area is covered by Pleistocene-to-

recent unconsolidated sediments.

With regard to observational evidence (pillow-top determinations j,

crossbedding and graded bedding), the volcanic-sedimentary rocks can be

arranged in order of decreasing age: basalts, andesite, argillite-arkose,

reworked felsic volcanics, and felsic tuffs.

On the basis of our previous survey, we reported on a rock type

designated as andesite/dacite. The present, more detailed work has led us to

believe that some of the apparently-volcanic rocks in this group, such as the

banded flows and mafic tuffs, are actually reworked volcanic material and

should be classified as metasediments.

The regional metamorphic grade is that of the middle-greenschist

facies. This conclusion is supported by the absence of almandine garnet

and staurolite in the thin sections so far examined. In conjunction with

the emplacement of felsic plutons nearby, hydrothermal alteration and,

possibly, contact-metarnorphism, have affected rocks of Kenoran age in the

area covered by this report. The basalt/andesite is locally silicified and

sericitized. Carbonatization occurs close to such felsic plutons.

The folding of the volcanic and metasedimentary rocks is such that

they now exhibit a generally northeast-southwest trend, in bedding as well as

in foliation. This trend, with local modifications, is pervasive in the

Metcalfe Lake Area.

ECONOMIC GEOLOGY

The Metcalfe Lake Area, situated between the Tashota gold area

and the Onaman River czunps of the early twenties, has received relatively

little attention from old-time prospectors, who did not have the means to

cope with the problems of deep overburden and water which mask much of the

bedrock. Lately, however, several mining- and exploration companies have

staked ground in the area and are still conducting surveys.

The general economic significance of the Tashota-Onaman region

has been described in the previous geological report.

THE PRESENT SURVEY

The traverses were run along grid lines and cut claim lines.

On some of the claims, the geological work had been preceded by ground-

magnetometer and radiometric work. The grid was set up under theodolite control

in early 1976, and has been expanded periodically.

The main baseline (MSL) cuts across the widest part of Metcalfe

Lake in a direction 54O east of north; the traverse lines are spaced 100

metres apart, and a station interval of 25 metres is standard. In most of

the work done to date, readings have been taken at half-station intervals

or less.

LITHOLOGY AND STRUCTURE

Four main rock types were identified in this survey:

A. Mafic Volcanics: pillowed, flow-type, sub-porphyritic and

amygdaloidal basalt and andesite;

B. Felsic Volcanics: rhyodacite/dacite and rhyolite tuffs;

C. Sediments: quartz-bearing "argillites", reworked felsic volcanics,

and iron formation;

D. Mafic intrusions:

i) Concordant: "amphibolite";

ii) Discordant: gabbro plugs.

The rocks of type D are separated into lOa and lOb, respectively,,

for mapping purposes.

Sills or dikes could not be traced with certainty in the surveyed

area; therefore, none of the rocks are classified as diabase. It should be

pointed out, however, that the gabbroic types lOa and lOb are equivalent,

mineralogically, to the rock types previously designated as lOa and lOb dia

bases in our previous report.

As far as the present survey is concerned, rocks of type C are

the most abundant ones, followed by those of types A, D and B, in that order.

No criteria could be established to differentiate basalts from andesites.

This difficulty is due to the abundance of the metamorphic mineral chlorite,

which makes field-identification impossible. Only bulk analysis can provide

the answer to the problem; meanwhile, we provisorily introduce a class of

"basalt/andesite" type rocks.

No evidence was found for major displacements, resulting in

shear- or fault zones. No large displacements disrupt the general structural

and stratigraphic trends. Minor folds are common in rocks of types B and C,

but no definitive vergence pattern has emerged so far. This lack of tidiness

is due to refolding of crossbeds and crenulated cleavage planes.

Lineation, foliation, schistosity and bedding trends are fairly

consistently between 180 and 240 degrees, and the dips are mostly steep to

vertical. As yet, no synform-antiform pairs can be outlined.

A. Ma f ic Volcan ics

These fine-grained rocks appear in the pillowed form in a zone

roughly parallel to the MBL and starting 200 metres northwest of it; to the

southeast of this pillow-line, flow rocks predominate. This conclusion is

based on observation of the sparse, small outcrops found in the generally

drift-covered part of the area traversed by the MBL.

The usual genetic sequence for mafic volcanics is that flows

(massive) are followed by pillow structures and vesicular textures. Such a

classical sequence can not be identified in the surveyed area. The contact

(as inferred from the present work) between pillowed volcanics and the

metasediments occurs roughly along a line some 200 metres southwest of the

ABL 800 NW; hence, the outcrop width of the pillow zone is 500 100 metres.

Overburden obscures whatever rock type may occur southeast of the MBL.

The sizes of the pillows vary from less than 10 cm to 50 cm, for

an average of 30 cm. Tops always face N to NW, as determined in 15 recorded

and a number of casual observations. Although we cannot yet say what the

attitude of the plane of deposition must have been, our observation of top

orientations seems to conflict with some recent publications by others.

The rock type designated as (le) amphibolite in our previous report,

has been found to be a mafic-derived metasediment which should have been termed

a chlorite-plagioclase-hornblende schist, with or without detrital quartz

grains. It is, therefore, reclassified as a metasediment of mafic derivation,

and given the map symbol (8).

B. Felsic Volcanics^

Rocks of this type (units 4, 4a, 5 and 5a) are uncommon in the

surveyed area; they prevail on some of the easternmost claims. One outcrop

of rhyodacite (3-4a), which is strongly sericitized, was located strati-

graphically above metasediments on Line 76 near station 88. It is not ex

tensively exposed, and it has not been found in outcrop on adjacent grid

lines. Its composition is quartz, sericite and feldspar in a

modal ratio of 50:25:25. The relatively high radiometric reading over this

outcrop indicates a potassium content higher than that of the surrounding

rocks. The unit was hydrotherroally altered during or after deposition. It

was noted, however, that the rocks above and below this unit are not strong

ly affected by this type of alteration. Another outcrop of altered rhyodacite

occurs about 35 metres due east of the easternmost tip of the south arm of

McDonough Lake; here, sericite is less abundant.

One outcrop of rhyodacite-rhyolite tuff occurs above strata of

reworked intermediate-to-felsic volcanics and argillites on claim TB 459701.

It is the westernmost outcrop found on a former grid line (shown as a dotted

line on the map). The modal composition is quartz:feldspar:hornblende4-biotite

70:20:10. We consider this occurrence important for two reasons: a) felsic

volcanics underlie the. souteastern part of Metcalfe Lake and occur around Dyer

Lake; b) the outcrop on the old Crossline on claim 459701 is the first

occurrence of felsic volcanics found on the claim group close to the. major

pluton west of the claims, and may have economic significance. The pyrite

content of this unit is greater than \'/,,

It would be important to locate similar rocks farther west, but:

unfortunately the terrain descends into deep swamp and muskeg where no more

outcrops could be found. Otherwise, it would have been possible to give a

more detailed description of this lithological unit. As it is, we can only

say that it is a fine- to medium-grained volcanic rock of simple mineralogy,

which displays no bedding or other sedimentary character.

C- Me tase d iment s

These are the most abundant rock types in over half the mapped

area, disregarding the areas of deep pleistocene drift. Their texture is

fine-grained (less than l mm) and they do not fit the classificiation scheme

we used in the previous report. These rocks may best be described as being

3/4 argillite and 1/4 arkose; a rational designation would be: quartz-chlorite-

amphibole-feldspar schist. They deceptively resemble mafic-to-intermediate

volcanics, even at fairly close inspection, but careful observation has led

us to reclassify them as metasediment!; on the strength of the following

features: lamination, graded bedding, crossbedding, quartz-chert banding,

and the presence of reworked remnants of mafic volcanics and shards.

It seems most likely that the quartz-bearing argillites were

derived from mafic-to-intermediate source terrains located to thenortheast

and west-northwest . The sedimentary pile appears to occupy a topographic

low. Volcanic piles had been built up in the northeast and, possibly, in

the west-northwest. Crossbed measurements indicate the transport of debris

from the northeast as well as from the west. The relative abundance of chert,

the fine lamination, and the presence of iron formation all imply a fairly

stable deposition environment.

The reworked felsic volcanics are intermixed with these

"quartz-bearing argillites". They have been found on claims TB 459700,

459701, and 458686. These form the northwestern corner of the claim group.

In a few localities they resemble arkosic sandstone, but in most outcrops

there are mixtures of argillite and reworked components. Occasionally,

lapilli and vesiculate fragments occur in these sediments. They are fine

grained and start occurring, stratigraphically speaking, only where felsic

tuffs are present. The reworked volcanics exhibit the same sedimentary

structures as the "argillites".

The last; type of sediment is a two-to-three metre wide band of

iron formation, which might be more properly classified as an exhalation

deposit. This band is very strongly ferromagnetic and is made up of alter

nating bands of chert or cherty clay, and magnetite. The overall

content is 25-57,. The deposit is fine- to very fine-grained. This band,

first identified on Line 76, could not be traced across Lines 72 and 80,

but at the same stratigraphic level on Line 72 there is a cherty band with

traces of pyrite, and interbedded with argillite, representing the same

marker hprizon. No disruption of this excellent marker seems to occur

from Line 76 to Line 56, and this leads to the conclusion that no passive

flow, nor any major folding, shearing or faulting, have influenced the

present stratigraphy.

^ - Maf ic I.nt rus i cms

The concordant "amphibolites" were mentioned in a previous

section under the heading of General Geology. They are fine-grained and

massive, and consist of chlorite, hornblende and plagioclase (in order of

decreasing abundance) .

The gabbro plugs, identified as lOa and lOb on the map, resemble

diabase compositionally, and our identification of certain "dikes" on the

previous map may have been in error. More detailed magnetometer work will

be required to verify this assumption. The intrusions are generally medium-

grained, contain plagioclase, pyroxene and microcline (in order of decreasing

abundance) plus oxides, and cut through sediments as well as volcanics.

Small contact aureoles and quartz veining are common adjacent to these intru

sions. The quartz veins are usually barren, but some pyrite was recognized

occasionally.

Between the previous survey and the present one, a specimen of

the diabase of type lOc was examined in thin section, and this led us to

revise our opinion. Both authors are now convinced that this rock is

actually a sediment derived from mafic volcanics; its modal composition is

plagioclase : hornblende : chlorite : quartz :s 30 to 35 : 30 : 15 : 5, with

minor epidote and oxides. The category lOc no longer appears in the

present classification scheme.

Plelstoce ne

In areas of extensive, deep overburden, we used the following

criteria to classify the unconsolidated pleistocene sediments:

1) the silt : sand : clay ratio of the matrix

2) pebble sizes

3) pebbel : matrix ratio

4) pebble type

5) depth (thickness) of the pile

6) associated vegetation

Using this classification, we outlined a ridge system extending

from the SW shore of Metcalfe Lake to Line 124 (the farthest survey line

so far cut in the southwestern corner of the claim group), as well as

outwash debris in the flatter areas at the base of the system, and clay-

rich swampy areas. The average width of the ridge system is 400 metres,

and it has a general NE - SW trend. The asymmetric topographical profile,

with the steeper slope facing northwest, may be related to bedrock topo

graphy .

In the vicinity of the MBL, a zone extending from about 50 m. y..

north of this baseline to 150 m south of it, shows a composition with J.0%

pebbles (locally somewhat higher) and a silty matrix. The zone northwest

of this, over a width of about 650 metres, has less than 5% pebbles (with

none visible locally) and again a silty matrix. The zone southeast of the

main zone, with a width of about.125 metres, has 5 to 10% pebbles in a

silty matrix. In the flat areas only silt and clay-size particles are

present. The. silt, with an average grain size of 0.125 mm or less, makes

up 90 to 95^ of all sediment in the ridge-system and outwash deposits;

no sand (with grain size of 0.5 mm or more) was found. Thus, we are

dealing with a distinctly bimodal size distribution - a somewhat puzzling

phenomenon when reviewing possible modes of deposition.

In the pebbles, mafic volcanics and granitoid rocks predomi

nated with 30% each. Felsic volcanics were the source of about 20X of

the pebbles, and gneisses provided 10 to 15% of them. These ratios are

consistent over the entire ridge, system inspected from Line 40 on claim

TB 465134 to Line 124 on claim TB 464509 - a distance of 2100 metres.

The direction of transport could not be ascertained, because we could

not identify any crossbedding or pebble imbrication. From more general

considerations, we. can say that we are dealing with an esker in which the

direction of transport was from northeast to west-southwest. No further

attempt is made here to reconstruct the parameters of deposition.

Qpnelus ions and recommendation

No major stratigraphic revision had to be made since the

previous survey. In a third survey, the eastern and southeastern areas

should be studied, as well as the two remaining claims along the western

boundary of the group.

OTTAWA, 1979 09 17

/,} f y ) f? f t , ), X -, ,

r42L04NE0203 2.3843 METCALFE LAKE

REPORT ON A RADIOMETRIC SURVEY

IN THE METCALFE LAKE AREA

by

WALTER YZERDRAAT

GENERAL

The radiometric field work for this survey was done during

the second week of July, 1979, on claims TB 457149, 457150, 459704,

464501 to 464503, 464508, and 465131, and reported to the Thunder Bay

Mining Recorder on 1979 07 15. The remaining two claims, TB 464504

and 464507, were traversed immediately afterwards and this work was

reported separately on 1979 07 31.

Field assistants were D. Tiong and P. Lawnikanis, both

of Ottawa-Carleton. On all claims, the grid used had been cut previous

ly for the. purpose of other geophysical and/or geological work.

All the work was done with a Scintrex BGS-1S scintillometer.

The intention had been to investigate outcrops or areas with anomalously

high readings in more detail with a Scintrex GIS-3 gamma-ray spectrometer,

which was on hand for the purpose. As none of the claims showed any

evidence of such anomalies, no gamma-ray spectroscopy was attempted.

In general, the latter procedure is tedious, time-consuming, and of

little practical value unless the low-energy broadband count is well

above 30 cps.

LOCATION AND ACCESS

Tlie ten claims traversed in this survey are part of a

32-claim group held by Walter Yzerdraat of Ottawa, and located around

a point in the Thunder Bay District at latitude 50O 10* north and

longitude 870 39* west, which is within the boundaries of NTS map sheet

42 L/4. All claims surveyed are in the Thunder Bay Mining Division,

Metcalfe Lake Area, Mining Map M 1408.

There are three main routes of access. A winter road, cut

for communication with the Onaman River gold camps in the early twen

ties, connects the grounds with the abandoned town of Tashota, located

at mileage 177 (west of Hornepayne, Caramat Subdivision) on the CNR

transcontinental line. The walking distance from Tashota is about 10 km

in a southeasterly and southern direction, but a somewhat shorter and

more convenient trail leads south from mileage 176 through the old

ballast pit 2 km southeast of Tashota.

The winter road has been damaged badly north and south of

the Gzowski Creek crossing by traffic with heavy machinery in recent

months, but the crossing of the creek itself has been facilitated by the

construction of a new, sturdy bridge.

The other routes of access are by air from Nezah Lake and

Cordingley Lake, respectively. Nezah Lake is less than l km south of

Provincial Highway 11 between Beardmore and Longlac, and the air distance

from there to Metcalfe Lake is roughly 60 km in a direction a few degrees

east of north. It is the most convenient route for those who drive in

from Thunder Bay or from places in Eastern Canada.

Cordingley Lake is some 5 km north of Nakina, a small town

and regular stopping place for VIA trains on the transcontinental line

linking Toronto and Montreal with Vancouver. The train time from Montreal

to Nakina is about 24 hours. The air distance from Cordingley Lake to

Metcalfe Lake is 70 km in an almost due westerly direction.

GENERA!, GEOLOGY

The area around Metcalfe Lake is underlain by a sequence of

Archean mafic to intermediate to felsic volcanics (tholeiite, andesite,

dacite-rhyolite), a fair amount of volcanic-derived sediments, and a few

large felsic plutons. Small mafic intrusions have been found to cut

nietasedlmcnts as well as older volcanics, and are therefore considered

to bc (at least in part) the youngest rocks apart from some unaltered

felsic plutons and the unconsolidated pleistocene material.

All volcanic and sedimentary rocks exhibit the effects of

low-grade (up to middle greenschist facies) regional metamorphism; there

is evidence of contact aureoles around the plutons and some of the mafic

intrusions, and hydrothermal alteration is noted in many places.

The folding pattern, with axial trends from SW to NE, indicates

a NW-SE compressive stress regime. The folding trends are locally modified

by the emplacement of the larger plutons; in the vicinity of McDonough Lake

the foliations and axial planes are more nearly N-S.

Events in Pleistocene and recent times have drastically modi

fied the pre-existing topography. The old drainage systems were destroyed,

and much of the area is now covered with eskers, outwash plateaus, moraines,

lakes and swamps, where the depth to bedrock varies from a fraction of a

metre to fifty metres or more. Glacial striae as well as esker topo

graphy indicate a NE to SW transport of unconsolidated material - a direction,

which is almost coincident with the structural trend.

ECONOMIC SIGNIFICANCE

The Metcalfe Lake Area derives its potential economic signifi

cance from the occurrence of gold- and minor base-metal mineralization dis

covered sixty years ago on claims in the adjacent township of Oboshkegan.

This mineralization is associated with a contact between mafic and felsic

metavolcanics (altered and mineralized rhyolite to the south, veined "green

stone" to the north) which trends approximately east-west in the area south

of Hull Lake. This contact has been traced for a short distance westwards,

where, it is obscured by a sandy ridge and the swampy valley of Metcalfe

Creek, about l km northeast of Metcalfe Lake.

The Metcalfe Lake Area Is, moreover, a little-explored link

in the N-S chain of gold discoveries stretching from the Tashota area to

the northern shores of Onaman Lake. This belt saw most of its exploration

and development activity (resulting in the establishment of two small

mines and a number of one-man workings) during the later years of World

War I and the early twenties. The first impetus for this activity came

from a gold discovery on the Kawashkagania River north of Kowkash, some

30 km further east.

Important, but so far untapped, reserves of iron ore have

been outlined in Suni (Paska) Township, also east of Tashota. Detailed

descriptions of these and other natural resources can be found In the

files and annual reports of the Ontario Bureau of Mines and its successors.

THE SURVEY

The scintillometer readings were taken on a grid with a line

spacing of 100 metres, and at station intervals of 25 metres. Some inter

mediate readings were taken where the radioactivity was higher than average

or where rapid changes seemed to occur. The intensities measured range

from less than 10 cps in swampy areas and on mafic bedrock, to barely 30 cps

in areas of glacial drift partly derived from felsic terrains.

The baseline of the grid trends N 54O E, in accordance with the

local structural and topographical trends. It traverses the widest part of

Metcalfe Lake and was set up and executed under theodolite control, starting

in February, 1976. It is now well over 2 km long, not counting the 1-km

portion which traverses the lake. Directional control was provided by a

topographical baseline, set up and cut in a due westerly direction from a

point on the N-S Nipigon Provincial Forest Reserve Line near the mouth of

Metcalfe Creek.

Two auxiliary baselines complement the Main Base Line (MBL for

short) and serve as control lines. The longer of these (2100 metres) is

the ABL 800 NW; the other one is the ABL 250 SE, set up to facilitate grid

control on the peninsula occupying part of claim TB 465134; it extends over

a distance of only 300 metres.

RESULTS AND CONCLUSIONS

The findings of the present survey confirm and reinforce the

conclusions reached after two previous radiometric surveys on claims

adjacent to the recently surveyed area (immediately to the east and

.immediately to the north, respectively). Reports on the older surveys

were submitted to the Ministry on 1977 12 20 and in March of this year.

In those reports, the author concluded that the likelihood

of encountering significant uranium- or thorium mineralization on this

property j y very low; that the local rock types are generally much more

sodic than potassic In composition, and that above-background readings

are to be expected only in drift-covered terrain and on transported

felsic boulders.

Nevertheless, radiometry may be considered useful not only

because it offers the remote possibility of detecting, or tracing, eco

nomically interesting mineralization, but also, and mainly, because it

caa bc an aid in establishing the nature and thickness of the overburden

which mantles much of the bedrock over a large portion of the surveyed

area.

It seems advisable, therefore, to extend the radiometric survey

over the 16 claims not yet traversed, and it. might be useful to perform

some additional reconnaissance in the source area of much of the over

burden: the Gzowski Lake Stock about 12 km to the northeast.

On some of the claims not yet investigated by radiometry, such

as TB 459700-1 and TJ5 464506, more-felsic volcanics and volcanic-derived

metasedimeiits were identified in the course of geological field work done

last fall and this summer. This area would be a logical target for the

next step in our continuing surveying program.

Ottawa, 1979 09 18

"f,/"

REPORT ON A MAGNETOMETER SURVEY

in the Metcalfe Lake Area

(Thunder Bay Mining Division)

by

S f P oWalter Yzerdraat ,, d Q

42LC4NE0203 2.3043 METCALFE LAKE 030

The claims to which this report rerers were surveyed oetween

October, 1977, and July 20, 1979. Ten of the eleven claims were mentioned

in a work report to the Thunder Bay Mining Recorder on. 1979 07 15; their

numbers are: TB 458685, 458687, 459705, 464501 to 464504, 464506, 464508,

and 465]31. One claim, TB 464507, surveyed after the 15th of July, 1979,

was reported separately on July 31, 1979.

All surveyed claims are part of a 32-claim group to which the

mining rights are held by the author of this report, and on which several

ground-magnetometer surveys were performed since February, 1976.

LOCATION AND ACCESS

The earlier magnetometer reports submitted by the same author

describe in some detail the various means of access to the. claim group,

which is situated some 8 km south of the CNR Transcontinental Line near

the former station of Tashota. This town is at mileage 177 west of Horne

payne and passenger trains do not stop there, but occasionally the traveller

can arrange a drop-off and pick-up with the despatcher at Hornepayne. The

Winter Road leading southeast and south from Tashota is not an easy one to

walk, and recently it has been left in an even worse condition by the use

of heavy machinery north and south of Gzowski Creek. Flying in from Nezah

or Nakina remains the most convenient, although not the least expensive,

method of reaching the grounds.

The claim group itself centres on a point at latitude 50 10' N,

longitude 87 0 39' W, and can be found on Mining Map M 1408. One claim (not

involved in the present survey) is in Oboshkegan (M 1413). The NTS map sheet

is 42 L/4.

GENERAL AND ECONOMIC GEOLOGY

For details about the regional geology and the economic

significance of the area, the reader may consult earlier reports by the

present author, as well as a number of GSC and OEM, ODM, OGS and OMNR

publications dealing with these topics.

Briefly, the Metcalfe Lake Area is a west-jutting salient of

a major greenstone belt which is part of the Wabigoon System. Copper,

silver and gold mineralization have been found in various parts of this

belt. As far as the Metcalfe Lake Area is concerned, the most important

finds are gold discoveries at Tashota Lake (north of Tashota), the Wascanna

property 2 km southeast of Tashota, the Adair property 4 km south of

Tashota, and the Tashota-Onaman Mine near the northwest shore of Onaman

Lake, some 25 ku south of Tashota. Minor gold mineralization was also

found at the Kipper-Lincoln property 4 km east of Tashota, and at the

Kipper-Cameron Hull Lake property some 3 km east of the claim group here

described.

Most of these discoveries date from the latter years of World

War I and the early twenties; little exploration was done in the late

twenties and during the thirties and forties. The relative decline of

the gold price (which was fixed, while all costs were rising) made further

work unattractive, and only in the mid-seventies there has been a revival

of interest in the Metcalfe Lake Area and its surroundings.

SURVEY AND GRID

The work for this survey was done with a vertical-force fluxgate

magnetometer which had been used in earlier work on this property. Readings

were generally taken on grid lines at 12.5-metre intervals, although the

unit station interval is 25 metres. Where strong gradients were encountered,

some backtracking was done, and readings were repeated at quarter- or tenth

unit spacing. This enabled us to establish the maximum- or minimum inten

sities on a given line more accurately, and also to establish the profile

of any important: anomaly.

The grid itself was set up from a main baseline which cuts

across the widest part of Metcalfe Lake at an angle of 54 degrees with

the north-south direction as taken from the Nipigon Provincial Forest

Reserve Line, which is also the western boundary of the Township of

Oboshkegan. From this "Reserve Line", a topographical baseline (E-W)

was set up near the mouth of Metcalfe Creek. This work was done in the

winter of 1976; during the summer and fall of that year, both baselines

were extended into the grounds west and southwest of Metcalfe Lake.

The grid was continually expanded during the following years.

Wing lines were cut every 100 metres at right angles to the MBL. As the

station interval unit: is 25 metres, the lines were numbered in multiples

of the number 4, because they are four station intervals apart. The num

bering system resembles the geographical system in that line numbers

ascend from east to west, and station numbers from south to north. The

main baseline is at station 48 on each line; an important auxiliary baseline

cuts the grid lines at station 80, that is, at a distance of 800 metres in

a northwesterly direction from the MBL. Hence, it will be referred to as

the ABL 800 NW. The other ABL is that at 250 m to the SE of the MBL; it

was set up and cut in order to facilitate the extension of the grid across

the dry portion of claim TB 465134. The ABLs and the TBL have been used

for surveying as well as for control purposes.

RESULTS AND CONCLUSIONS

On the northern claims it was possible to trace the extension

of some important anomalies identified earlier as horizons of iron formation

on claim TB 458686 (not covered in the present survey). A strong and per

sistent anomaly identified in the February 1976 survey on Metcalfe Lake could

be traced on claim TB 459705 where it cuts across survey lines 32, 28, 24 and

20, before crossing the north boundary of the claim group. The physical

nature of the body causing this anomaly has not yet been established with

certainty; in earlier reports it was speculated that it could be a mafic

dike. The same anomaly, labelled "A" in the May 10, 1976 report and sub

sequent reports, continues on the SW shore of Metcalfe Lake in a southwesterly

direction while gradually broadening and shallowing, indicating a greater

thickness of overburden as the terrain rises. In the present survey, it

has been established that the anomaly is continuous (on the 800-gamma level,

if not quite on the 1000-gamma level) across claims TB 464504, 464503,

457150, and 457149. On the latter claims, its existence had been established

in a survey conducted in February, 1978.

The southeastern and southwestern claims, TB 464507 and 464508,

respectively, show only gentle contour patterns, suggesting deep overburden,

and not indicating any important, consistently-trending magnetic bodies at

bedrock level.

Unfortunately, due to time limitations and the difficulty of

securing help in the linecutting, the westernmost claims of the group, viz.

TB 465138, 514065, 464509 and 464510, had to be left out of the present

stage of the project. Their magnetic exploration should round out the

picture so far obtained.

Another area where work is considered in the near future, is

the northeastern quadrant of the claim group. Consideration is also being

given to a VLF-KM survey to complement the magnetic data now collected and

plotted.

OTTAWA, 1979 09 18

tano

Ministry of Natur

GEOPHYSICAL - GEOLOGIC TECHNICAL DATA

42L04NE0203 2.3013 METCALFE LAKE

300

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

:CHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

Type of Survey(s) .

Township or Area Metcalfe

Claim Holdcr(s) W*

Arfta, M UOR

rdraat, Box 4225, Sta. E

QTTAWA, Ontario K1S 5B2

- E'rivate surveySurvey Company -

Author of Report __Walter Yzerdraat, P. Lawnikanis___

Address of Author ____as above_______OTTAWA (Vanier)

Covering Dates of Survcy,J3ctQber 1978, July, September 1979(linecutting to office)

Total Miles of Line Cut- miles (17,000 metres)

SPECIAL PROVISIONS CREDITS REQUESTED

ENTER 40 days (includes line cutting) for first survey.

ENTER 20 days for each additional survey using same grid.

Geophysical

Electromagnetic.

-Magnetometer .

DAYS per claim

Other.

AIRBORNE CREDITS (Special provision credits do not apply to airborne surveys)

Magnetometer. .Electromagnetic. .Radiometric

DATE: 1979 09 17

(enter days per claim)

SIGNATURE:.Autnor of

Res. Geol. _^______

Previous Surveys File No. Type

. Qualifications _.-JL-ULl.

Date Claim Holder

MINING CLAIMS TRAVERSED List numerically

(prefix) (number)

.TB...4.537.Q.Q...(jJ.9...Ua?.W.t.Ua8J.

.TB...45970.4...(wj..

JB...46.4503..........

.IB...46A50A.,

.IB..A6A505,

.TB..A6A502.

.IB..A6A5D8.

.1B..A6A509.

.TB..A6A510.

..IB..A65131.

..IB..465133.

..TR..A6513A.

TOTAL CLAIMS-

IND

UC

ED P

OLA

RIZ

ATI

ON

- R

ESIS

TIV

ITY

GR

AV

ITY

ELEC

TRO

MA

GN

ETIC

MA

GN

ETIC

H *^ r? Q O cT

o -

~. n.

C

3•5 1 (

— * D 3^

T f: 2.

v...4 -i -~

-

^*

!5j

1

g

Q~ O 5 r-. 3 o

S ~ *. 3

c0 — .

1~t

Ir i; "Q

*" 0

i 1 ** -i T' n

D H

H 5

— .

rs3

t; w s- Do

rt2

, oc.

c1

O

0

0<

X O o 3 5'

rs

~

-j 2 o ~

fi ^- o -J. - ^- ~^ 5 s

fs

^ EL o

Scale

constann -i 2

Parameters

m /i 2 i

, _ •S S. 2 5' 3

Method:

Frcniicncv

U T; x' cL f~^ si 3 1.

0 a C/3 sr c Q O" fs o TT D 3* 5" rt n o" 5' o

Accuracv-

,..-p S Ei

a3

n 0 o ^\ IT?i'

- a: 5

Instrument

/i rf

^ r^.

~ '

K EL - 15

WrW ^

r/j O C

rO

0 D 5T"

-U -5 1 -—

D- r on w^

Diurnal

corre o n 3 O r* a.

T ^ 0

-^ 1 O n iT 3

Instrument

.? -l r; i

o a;

t- CCfl

O

•~*,

^ . 5' o Vi 3 5' q

0z "c^

C

! ~3

^0CT

; '

~l

2 2

— i i r*^

- i ~

i :^

rj~- *"

^l "^

* - — j 3 — -j' - o 5 0'

.; s

s O

P "*

^

5 E2c

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^ IT

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ST

P5z

G

r f I

3

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~

2.

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^

^

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73

O"

1*

1 s

Q 0

f

^

^ ^BV

Ontario

Ministry of Natural Resources

GEOPHYSICAL - GEOLOGICAL - GEOCHEMICAL TECHNICAL DATA STATEMENT

File.

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

ECHNjCAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

Type of Survey(s) Geophysical (Radiometric^,Township or Area _Metcalfe Lake Area, H 1408

Claim Holder(s)___Walter Yzerdraat, Box 4225, Station E

_______OTTAWA. Ontario K1S 5B2—^-——

Survey Company__Private survey————————^^-^^———

Author of Report __Walter Yzerdraat

Address of Author _______as above

Covering Dates of Survey July, September 1979(Imecutting to office)

Total Miles of Line Cut. Pre-existing grid used

SPECIAL PROVISIONS CREDITS REQUESTED

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

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

Other.——-———

DAYSper claim

Geological.Geochemical.

AIRBORNE CREDITS (Special provision credits do not apply to airborne surveys)

Magnetometer. .Electromagnetic . Radiometric(enter days per claim)

DATE: 1979 09 IS__ SIGNATURE:Author of Report--cir"Agent

Res. Geol... . Qualifications ^l^.^

Previous Surveys File No. Type Date Claim Holder

MINING CLAIMS TRAVERSED List numerically

(prefix) (number)

.A57.W.9..........

..4M5.C&.................

.A6M0.3..................

..4.6A5.0.4...............

..4.6.4^.0.7..

TOTAL- CLAIMS-

IND

UCE

D P

OLA

RIZA

TIO

N-

RES

ISTI

VIT

YG

RA

VIT

YEL

ECTR

OM

AG

NET

ICM

AG

NET

IC

1 1 — ;

ra ra"

ra "

3 ra"

3— *

k

~ -) r

™t *

•i ^ - -^ — *

^-r-

1 — :L "i

s*

™-^ *5 — - "^

w jl,

^ I"

QD -k 3 a 3

rq o

Method [

PH

t'H meters t i

t

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—;3

3'

^.

C•^

t"

1ra

^-v 1" D

? ~?

ra ra

O

.Q

C

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ra

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3

ra

ra<

^ O o 3 3"

— * i? /3 ? ™ •* i

V,o l; "i n ^ ^ ^

b^

J

fi as x "5 (S ^•

E.

P

T ^

^ 3 r^

0 ~

3 yi .^ 2

3 "

ra •j 3 g "™5

•o rt "^ 51 ^J ft o' 3

l |

2 E-

^

D T x' n Cu ^ S C/5 3. r-*

O

-t D r** y o 0 O"

as o D 3* 5' n S? •1 p* , ?r 5* o

•j o <

n s* 2 2^

i"* 5

0 O n 0 q'

^ ^•4

^

Instrument

6J s ra as — -

as D.

i: ra

'Base

Static)

-* ~ ra TT 3 ? ^ — - v

ST-

O ~ ^"

3 ra ra n Q "^ ra Q.

'

Instrument

Accuracy - en ra ra" ra H

- S 3

t

1

r

' . - i i

Contour

inter s. r-j

g rt 0 C If M

, rt i-i

^ S 1 O 0 O 3 rt CO d fD

H CO

(D

0 o CU

•-5*

1 — )

ra"

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*i tStation

intcrv ~ NJ

1 rt if CO

l l

-* ^ en O as D.

3 q .hj

D 3 c

cr pj co (D " O M B H-

H-

3 (D

(CO 0,

C M H-i

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^33

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^"

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ra

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3- sr

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l

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^o.

^

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^^^ •

B D 3 *

X5

Instrument_____________________________________________ Range.

Survey Method _____________________-—————————^—-——..——————-

( Corrections made.

RAJ))OM1,TRK:

Instrument Scintrex BGS-lS broadband gaimiaray spectrometerValues measured Counts per second^^,^^^^

Energy windows (levels) Energy threshold 80 KeV

Height of instrument Placed on rock or overburden______Background Count 3-5 cps

Size of detector___l" x l" sodium -[ndi'tip. crystal_____________________^_________

Overburden___ZPTO to 86Wr^1 metres — pp-ft Report of todays' date — organic and silt/pebbles(type, depth — include outcrop map)

OTIJKRS (Sl'.ISM 1C, DRILL WKI.L LOCiGINC; 1:'IC.)

Type of survey__ _____________ ————-——————————-—————————.—-^—^—————^——^————J r J ' '

Instrument______,.________-__—___._.-—^-—----.-.-—.—.—.---——.———.-—^-^,-—..—————..—-—.——.

Accuracy ____________________________________________________________________

Parameters measured.________________——————-—^^^-——-^——^-————————————.—...—.—

Additional information (for understanding results) —

A1MQHNK SURV1 'A'.S

Type of survey(s)___.

Instrumcnt(s) _____(specify for each type of survey)

Accu racy-.—..—--.—-—-——^^—.-——(specify for each type of survey)

Aircraft used —-————^-————-—.-———-...-—-..-.—-...—-....——.——.

Sensor altitude-—-.-—.——-———-——————

Navigation and flight path recovery method —.

Aircraft altitude_________________________________Line Spacing

Miles flown over total area___________________________Over claims only.

GEOCHEMICAL SURVEY - PROCEDURE RECORD

Numbers of claims from which samples taken.

Total Number of Samples. Type of Sample.

(Nature of Material)

Average Sample Weight.——-———-

Method of Collection———————.

Soil Horizon Sampled.

Horizon Development.

Sample Depth———^.

Terrain————————

Drainage Development.———————————

Estimated Range of Overburden Thickness.

.ANALYTICALNIEJIIQDS

Values expressed in: per cent p.p. m. p.p. b.

n aa

Cu, Pb,

Others—

Zn, Ni, Co, Ag, Mo, As,-{circle)

Field Analysis (.

Extraction Method.

Analytical Method-

Reagents Used-——

Field Laboratory Analysis

No. ———————————

SAMl'lJU'RKl'ARA'JlON(Includes drying, screening, crushing, ashing)

Mesh size of fraction used for analysis ————.

Extraction Method.

Analytical Method .

Reagents Used ^—

Commercial Laboratory {_

Name of Laboratory——

Extraction Method-

Analytical Method ——

Reagents Used ———

.tests)

.tests)

-tests)

General. General.

tario

Ministry of Natural Resources

GEOPHYSICAL - GEOLOGICAL - GEOCHEMICAL TECHNICAL DATA STATEMENT

File.

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

[TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

GEOPHYSICAL (Ground magnetometer')

etcalfe Lake Area M 1408—————

Type of Survey(s)

Township or Area

Claim Holder(s)___Walter Yzerdraat, Box 4225. Station E

OTTAWA, Ontario K1S 5B2

Survey Company__Private survey

Author of Report _Holder.,—W..

Address of Author ________aa ahnvp.

Covering Dates of Survey, 1977, 1978, 1979 (up to July 20)(linecutting to office)

Total Miles of Line Cut. grid used

SPECIAL PROVISIONS CREDITS REQUESTED

ENTER 40 days (includes line cutting) for first survey.

ENTER 20 days for each additional survey using same grid.

Geophysical

-Electromagnetic

—Magnetometer_

—Radiometric__

-Other..——————

DAYSper claim

Geological.

Geochemical.

AIRBORNE CREDITS (Special provision credits do not apply to airborne surveys)

Magnetometer. .Electromagnetic. . Radiometric(enter days per claim)

HATK- 1979 09 18 SIGNATURE:.Author of Report "

Res. Geo!.___ . Qualifications __'^_- 3 f f ,K

Previous Surveys File No. Type Date Claim Holder

MINING CLAIMS TRAVERSED List numerically

(prefix) (number)

.....TB..4645Q3.

.....XB..4645Q4.

.....TB..4645Q6.

......XB..464507.

......EB..464508.

TOTAL CLAIMS.

GEOPHYSICAL TECHNICAL DATA

SUKVKYS 11 more that) one survey, specify data for each type of survey

Number of Stations 660 standard grid points_______Number of Readings 219.Q

Station interval .J?5.jn .stand ard, 12.5 m routinely, Line sparing 100 metresr, .., 2.5 m for detailPro! i le sea le....... ......... ., ^ ^..——..—,—--—.—^——.—.—.-..^-.^—..———.————-^—^

Contour interval-^.-J.0000,^-5000-,—-.2000^-^0000^^600, -200, O, 4-200, 400, 600, (800), 1000, 1500, 2000, 4000, 6000, 10000, 20000, 40000, 60000, 100000.

Instrument — ._Scintrex MF-2 vertical-force flviggate magnetometer_________________

W 'S,

O <tr-f ^

O c* f-ib wj w

Oi

OH

N*-4

rt . .Delay time

Accuracy Scale constant ——5-gammas; -accuracy, 20 gammas scale constant on IQOQ-gamma p Diurnal correction method ____Secondary and tertiary base station readings , loop correction.

Base Station check-in interval (hours)_______Average two hours____.—______________________Base Station location and value _SBS on MSL at shore Metcalfe Lake, 405 gammas above datum ^________ ^________IBS at post 4, TB 465131, -625 gammas l datum_________

Instrument ___ ...^_..,..__,..__._____. ^.^^^^^^.^____^_^^_^________^________________H

Coil configuration _____________..—————-———-———-———-——.—-———-———-.^—^^^————..—.-—.—.

Coil separation ,_..., .—.-.-.... ....._......_...____________________________________________

Accuracy -._- . —....... .^.. __..--.—.-......__..___.—-^^—^-^———-—^^--——--——-———————————-.

Method: Q Fixed transmitter Q Shoot back d In line CD Parallel line

Freq u en cy __..... ....... _ ...^ .___-....__-——{specify V.L.F. station)

Parameters measured

Instrument ^ _

Scale constant -..—

Corrections made..

Base station value and location

Elevation accuracy.____.__.__.____.-^—-

Instrument __^^__..________________.——.———————————————————————

Method D Time Domain CD Frequency Domain

Parameters- Or) time___________...________________ Frequency ————.

Of f time___________.________________ Range ————————

- Integration time______—-

[i3 ^ Power__. U

Electrode array——

Electrode spacing ,

Type of electrode

NOTES

40O* surface rights reservation along the shores of all lakes and rivers.

87 45 44

Deacon Site -"-^ Defrt of Transport GZOWSKI /v;

f .1J lFOR STATUS REFER TO504539 1(500359

! U Jl———————t ————— h- ————|J^3*

504537 p--—k----L.— .4 ™-—,

-4 ,. '49637 '4 ,l —— ——,—— — J. J-

— L,-..iL._ J _ -— — l l- — V TB l ,. l ~~ - — - ——

/496359J 4*8358

OBOSHKEGANFOR STATUS REFER TO TWP^^PLAN 1413

, M6628 /| 5I662S , 5166Z2 |

1 j 1, i A~x^i -f

l 471474 47,477-TB

47I4SI 47I486 1 471487' 471492 47J47J}!______ '.---J. — —— J- — — -J

TB , TB

47LT4 |72' 471479 l 471480 l l

814066 \5i872B

~~~ ~~~~~ ~~~"

-* w-j 11 v I-TWIIJ Or Q*J r O

r-- - i- --i-l TB TB TBi 515673 515674 , 515675

.5259221 t- - - -

TB i(525925) 525984

--T---

—---^---;~ —

1472411 l 472410

472255)472256L----L___J

50 07 30-1

6745 44 40l/

39 37 36l ,

35 34 33 32 31 87 30

R F F F R E N C fi S

Tp P O C-, R A P H Y

LAK!-" V -'v-rk', iTr -no 1 : rjf^F INVI l . ' io' sni i: r N . 502873

SURVEYS

C.N.R. BY W.J.MOORE O.L.S ,APRIL IST.I9I6. PLANNO.M2-27 AND M-2-23

BASE LINE BY SPEIGHT AND VAN NOSTRAND O. L. S. 1925 BOOK NO. 2564

MERIDIAN LINE SURVEYED BY PHILLIPS AND BENNER O. L. S. 1916. BOOK NO. 2474

CONTROL TRAVERSE BY R S KIRKUP O.L.S. 1942 PLAN No. P 15-18.

DATE Of, ISSUE

JAN l 51960

SURVEYS AND MAPPING

DISPOSITION OF CROWN LANDS

TYPE OF DOCUMENT

PATENT, SURFACE 4 MINING RIGHTS

, SURFACE RIGHTS ONLY..,.., MINING RIGHTS ONLY .....^

LEASE, SURFACE A MINING RIGHTS..

" , SURFACE RIGHTSONLY.^....

" , MINING RIGHTSONLY.-.,...,

LICENCE OF OCCUPATION -—.......

ORDER-IN-COUNCILRESERVATION ..,-———--.———-~

CANCELLED __ ,———.__

SAND 81 GRAVEL ._.. — -——........

SYMBOL

NOTE: MINING RIGHTS IN PARCELS PATENTED PRIOR TO MAY 6. 1913 VESTED IN ORIGINAL PATENTEE BY THE PUBLIC LANDS ACT. R.S.O. 1970, CHAP. 380. SEC. 63, SUBS6C 1.

TRAVERSE: POST M-23

O N TAR l Q

API A

METCALFE LAKEDISTRICT OF

THUNDER BAYMINING DIVISION JDF

THUNDER BAYAA.L ' ** t-.J -D. | w '-'-EJD. IMAR.25. 1954

' ,NCH 40 ' HS

TORONTO, CANADA M-140842L84NE0203 2.3843 METCALFE LAKE 200

"r -

' -. ; , r0 -'. ' - --.. r .'.•Vf^^

•VH

f

464*06

No outcrop

459700

(9 ')L l J li

465131

465132Cecfa-r. Al^er

N.O.

4645Of

Outwash plain

465/38 464502459704 465133

464508514065 464503 464504

fbwash plainCoblesSi/t

Silt

Pebbles d \0*/.

464509 45-714*5

KEY MAP

No outcrop

No outcrop l

— ..D Old" '

No oubc-ropMo outcrop

GROUP SKETCHWALTER YZERDRAAT

42Le4NE0203 2.3043 METCALFE LAKE 210

in HP.*.. —,-,.,42LC4NE82IS3 2.3043 METCALFE LAKE 220

4645O6

459700

0 465131

465132Cedar. Alder SWa

N.O.464501

45-9701

Alder swamp

465 JS3459704 464502

465133

PebWcs S-10% x- Esker

Pebble* <5% A6A5O8514065

Outwash

Pebbles- toy.

Pebbles ci \o*L

Ot;twasli

457150

KEY MAP

464510

GROllWALTER YZERDRAAT August 7 9

SKETCH

58687

459700

459701

46513

514065

464504

LAKE SUPERIOR

KEY MAP

R3-MLSURVEY PLAN

RADIOMETRIC

/AETCALFE LAKE AREA M 1408 Thunder Bay Mining Division

Claim hofder .- Walter Yzerdroat A 36149

Claim lines, actual, and corner post or witness post

Claim tine; assumed or submerged

Former corner post

Survey monument

Primary magnetic base station

Secondary base

Tertiary base465122

WALTER YZERDRAAT

GROUP SKETCH

:-'"V'- III Illinium.....,.,;; :;'-i '' 42Uei4NEa203 2.3*43 METCALFE LAKE

459700

e t

l __ ,

459701

514065

4.64504

LAKE NIPIG.ON

S U P E R .f O R

KEY MAP

M6-ML

SURVEY PLANMAGNETIC

/AETCALfE LAKE AREA MHOS Thunder Bay Mining Division

Claim holder: WoJfer

SCINTREX M F-2 Fluxgats magnetometomer2120 Readings- Datum is 58,900 gammas z-component

J (EAST , - w EST ) X - - - - - —

MAP SYMBOLS

Basel i nes

Claim lines, actual, and corner post or witness post

Claim line; assumed or submerged

•9 Former corner post

Survey monument

Primary magnetic base station

Secondary base

Tertiary base

465122

WALTER YZERDRAAT

GROUP SKETCH

.,..,....3843 METCALFE LAKE

46

45

07

^••

•4.6

4504

{MAP

AREA

\

46450

SU

PE

R/O

R

KE

Y

MA

P

M6-M

L

SUR

VEY

PLAN

MA

GN

ET

IC

/AE

TCA

LFE

LA

KE

A

RE

A

MH

OS

T

hunder

Bay

Min

ing D

ivis

ion

Cla

im

ho

lde

r:

Walter

A38H

9

SC

INT

RE

X

M P

-2

Flu

xg

ate

m

agneto

mete

r2

12

0

Readin

gs;

Datu

m

is

58,8

20 g

amm

as (

z-co

mp

on

en

t)

MA

P

SY

MB

OL

S

Basel

i n e

s

Tra

vers

e

lin

es

Cla

im

line

s,

actu

al,

an

d

corn

er

po

st

or

witn

ess

post

' C

laim

lin

e;

ass

um

ed

or

su

bm

erg

ed

•p

Fo

rme

r corn

er

post

Surv

ey

mo

nu

me

nt

Prim

ary

m

ag

ne

tic

base

sta

tio

n

Se

co

nd

ary

base

Tert

iary

b

ase

46

51

22

WA

LT

E R

Y

ZE

RD

RA

AT

Au

gu

st

79

SS

0G

RO

UP

S

KE

TC

H

o

46*306

464505

SURVEY PLAN G 2-MLGEOLOGICAL465131

METCALFE LAKE AREASCALE 1:2000465J32

Cedar. Alder 464501100 7S METRES

Field work; October, K);8 -Jul//September, 1979

Recorded holder; Walter Yzerdraat,

LlTHOLOCilCAL UNITS

L lafce Archean. Proterozoic 10 t&fri 1 Mafic intrusions All sediments are .schistose.

mineralogy fsls appear i n10a Porphyritic^ sericitized phcno-

crysts af-tar alettePorphyritic; clinopyroxene Phenocryst^ in rfch matrix

eh chert (y)Arg . . ,. ^^ IF Iron Formation~~'

H. ArcheanA. METASEDIMtNTS

Arkose- argyl li te

t hornblende PXu chlorite SilV magnebibeTcxbure txnd. structure

X,- A --Mafic-derived

B. PLUTONSbnd banded., bandingg bel graded beddingx bd cross b edd i(f.) lam (finely)rel refi'ctrew reworkedSer 5e.Cidtiz.eA

SYMBOLS- inferred/obscrvecl

Outcrop; rock type

C. HETAVOLCANICS

Rhyolite; 5^ tuff Rhyodacibe; 4a tuff Dacite 5 3*. Tuff

Outwash p' flin

Top direction, pillow* StriKt arui clip ,Mafic types

la Fallowed. i b Flows t ( ,. le Concordant an/illowiintrusions

(d) sub-porpKynbtc.-.,-i--,,-i j vesicular

\" Bedding sbrikeartd

Small oufcropPebble^

5iiki it-

Pebbles

464502.459704 465133Forest Cover

Silt Pebbles <5'%

Outwash46S134

Esker

Febtles <5%

-10% pebbles Silf

Outwash

pebbles os

Z64508464503 4645074645O4

S-10% pebbles Silt

Silt

er-10% pebbles

Outwashilt, febbles

Silt

Pebbles ci \0*/.

Qu^wqsh plain

Outwash4^7150

45-714^

KEY MAP

— . - —P-- \

No oubcrop

GROUP SKETCHWALTER YZERDRAAT

464-5O6

V'

\\

\

458687 459705-

^

M O

465132

r \

xX1b

OUTCROP MAPFOR

July '79 Radiometric Survey

R3-ML

ROCK TYPES

1 Mafic and intermediafe volcanics

1 a PillowedV

1 b Schistose, flows (d Sub-isorpUyritic) (C AmygdAloMftl, vesicular^

2 Felsic volcanics

Mafic intrusion*

Ald er- 459704 464502\ 4

465133

\

Out washo Pebbles

46SJ34Esker

Silt c?

Sift

o SJ/t

Pebt/csPebblts ^ 5

Esker

Esker

s;/t a c layPebbles 6'-^0%

Outwash

464508

*2 iO 0/.'Pebbles

V Silt Silt

464S04Pebbles c*

464507

Silt

Si/t* Clay

Pebb/es

PebblesEsker

Silt

febblesPctbles <5%

Pebbles

bles

CobblesPebbles

PebUcs V^

Pebbles cs io;

Outwash

' JD CT

a 0s(J

O KEY MAP

7 M, c PonoLi^h

WALTER YZERDRAAT A o g u s i 79

SKETCH

464505

464504

SCINTREX BGS-IS July-September 1979540 grid points, 999 readings

LAKt S U P E R ; O fi

KEY MAP

465122

WALTER YZ ERDRAAT

GROUP SKETCH

464507'464504

SUPERIOR

464510

[g n elomeHm e r gammas z-component

D----- - -- - - - - -

WALTER YZERDRAAT

GROUP SKETCH