Location Map
-110°
Symbols
-109°
Legend
Geological contact
-108°
Axial plane (F2/3, F4, F5, F6)
ATHABASCA GROUP
60°
Unconformity
60°
Thainka
74N-14
Lake
Tsalw or
74N-16Lake
Tazin
Lake
Geology of the Camsell Portage Area
side)
Ena
74N-15
Tazin
e
Riv
Bedding, tops known (inclined, overturned)
r
Lake
White granite dyke: medium grained with feldspar phenocrysts up to 1.5 cm in core to
Brittle fault or lineament
Lake
Gw
74N-12
74N-11
74N-10
(Zemlak Domain) - Southeast Sheet
74N-09
74O-12
This Map
Lake
Black
Db
MARTIN GROUP
74N-06
74N-07
74N-08
Glacial striae, grooves
74O-05
Charlot Point Formation
S4 foliation (inclined, vertical)
LAK E
ATHABASCA
Helmer
Lake
74N-04
Preliminary Geological Map (2004)
74N-03
74N-02
74N-01
Rcs
Mineral showing (see Saskatchewan Mineral Deposit Index) (Cu-copper, U-
S5 foliation (inclined, vertical)
74O-04
uranium)
59°
Lake
by K.E. Ashton and R. Hunter
Catalogue Number 2004- 4.2- (1.3)
74K-14
-110°
74K-15
-109°
Project M.123 of 2004
74K-16
The area was mapped by K.E. Ashton and R. C. Hunter, in the summer of 2004, with the assistance of C. Ebel, B. Knox, J.
74J-13
S6 foliation (dip unknown, inclined, vertical)
~~~~~~~~~~~~~~~~~~~ Unconformity ~~~~~~~~~~~~~~~~~~~~~
Malachite ± azurite ± erythrite alteration, trace chalcopyrite
-108°
0.5
Pp
Contour Interval: 50 feet
1
THLUICHO LAKE GROUP
2
Lesperance, and A. Nixon.
0.25
Pink pegmatite dyke: syn- D5, metres thick (quartz- feldspar ± biotite ± muscovite)
Dyke (inclined, vertical)
Kilometers
0
rounded to sub angular
59°
Scale 1:20 000
0
Arkose and siltstone, minor conglomerate: dark red- brown, hematitic
Conglomerate: dark red- brown, hematitic, poorly sorted polymictic clasts up to boulder size, sub
Rcc
Archibald
74K-13
tens of metres thick
Main S0/1/2/3 transposition foliation (dip unknown, inclined, vertical)
Bay
74N-05
Diabase dyke: brown to pink, very fine to medium grained; straight sided, chilled margin, up to
Tectonic breccia or sedimentary diatreme (formerly Ellis Bay Formation )
Nevins
Lake
pegmatitic, locally zoned; straight sided, chilled contacts, centimetres to metres thick
Bedding, tops unknown (dip unknown, inclined, vertical)
Beaverlodge
Uranium City
at 1:20 000 scale
Fair Point Formation: white, pebbly to cobbly sandstone, minor conglomerate
~~~~~~~~~~~~~~~~~~~ Unconformity ~~~~~~~~~~~~~~~~~~~~~
74O-13
Harper
(Part of NTS 74N/10 and /11)
Afp
Border of mylonite zone in pre-Thluicho Lake Group rocks ticks on high-strain
74N-13
0.5
Tectonic stretching lineation in mylonite
Camsell Portage Formation
1
Power transmission line
Miles
This map was printed from the geologist s digital file. Geological data were processed using Microsoft Access, and ArcView 8.3
Slate Island Member: dark grey, green, and red, fine- to medium- grained
software. Base maps were compiled from 1:50 000 scale digital topographic maps licensed from Saskatchewan Information
Intersection lineation (S4/S5)
Tcs
Services Corporation. Grid coordinates are NAD 83 UTM zone 12. The map was processed overall using ArcView 8.3 software.
sandstone and medium- bedded siltstone; thin bedded, massive, laminated and
ripple laminated; non-magnetic
Road
The map is issued in a package with the Summary of Investigations 2004 Volume 2, Saskatchewan Geological Survey, and is
Although the Department of Industry and Resources has exercised all
available separately.
reasonable care in the compilation, interpretation, and production of
Lineation of unknown origin (mainly from F4 and F5 folding)
Waterloo Lake Member: grey, green, and red, fine- grained sandstone and
Tcw
this item, it is not possible to ensure total accuracy, and all persons
This map accompanies the following publication:
Ashton,K.E.and H unter,R .C .(2004):G eology ofthe C am sellPortage area,southern Zem lak D om ain,R ae Province (U ranium
C ity Project);in Sum m ary ofInvestigations 2004 Volum e 2,Saskatchewan G eologicalSurvey,Sask.Industry and R esources,
M isc.R ep.2004-4.2.
who rely on the information contained herein do so at their own risk.
Dam
Minor S fold (F2/3, F4, F5, F6)
The Department of Industry and Resources and the Government of
siltstone; thin bedded, laminated and ripple laminated; highly magnetic
Falls Member: grey, fine- to medium- grained sandstone with rare granules and
Tcf
Saskatchewan do not accept liability for any errors, omissions, or
pebbles; medium to thick bedded, lamination and ripple lamination, convolute
bedding, ball and pillow structures, and flame structures locally common;
inaccuracies that may be included in or derived from, this item.
magnetic
Minor Z fold (F2/3, F4, F5, F6)
This map may be referenced as:
Powder Lake Formation
Ashton, K.E. and Hunter, R.C. (2004): Geology of the Camsell Portage area (Zemlak Domain), Southeast Sheet (Part of NTS
Minor W fold (F2/3, F4, F5, F6)
74N/10 and /11); 1:20 000 scale map with Summary of Investigations 2004 Volume 2, Saskatchewan Geological Survey, Sask.
Wellington Lake Member: grey, fine- to very coarse- grained arkose with rare
Industry and Resources, Misc. Rep. 2004- 4.2.
Tpw
pebbles and thin conglomerate beds; thin to thick bedded, graded bedding,
cross-bedding, and lamination; variably magnetic
Minor symmetrical fold (F2/3, F4, F5, F6)
Camel Lake Member: grey to pink, fine- to very coarse- grained arkose and
109°15'W
600000
Rcs
601000
602000
55
603000
604000
605000
Rcc
Rcs
606000
46
607000
40
57
80
Jewell Point
609000
Tpc
Su
49
68
34
18
608000
70
63
50
55
80
80
6607000
68
63
45
54
48
85
64
83
30
60
53
41
45
16
6606000
70
80
Db
Db
42
70
Sz
80
50
88
40
Db
Sp
Su
52
80
72
55
Gl
24
70
Joli Lake
80
33
38
Su
27
50
35
75
30
47
18
75
22
75
70
Sp
Db
85
51
protomylonitic, intensely fractured and variably bleached, dark layers may include minor
gneissic, local cm-scale pink medium- to coarse- grained leucosome, protomylonitic, intensely
sedimentary remnants, but some layering produced/enhanced by shearing; CI <10
(pseudomorphed garnet ± biotite (chlorite) (garnet- biotite- quartz- feldspar); intruded by sheets of
pink leucogranite; non magnetic
29
Gl
82
Pink-red leucogranite: fine to medium grained; foliated to gneissic, cataclastic to ribbony,
beady, cm-scale zones of anastomosing shear fractures; CI 1-5 (biotite (chlorite)- quartzplagioclase- K- feldspar); small plutons and metre- scale sheets; non- magnetic
Strike Lakes
70
Leucogranite: pink to white, medium to coarse grained; homogeneous to gneissic,
75
53
88
49
(biotite- quartz- feldspar); non- magnetic
fractured and variably bleached, dark cm- to dc-scale layers include minor psammopelitic
40
80
50
Lg
Strike Lakes
71
Pink, seriate granite: medium to coarse grained (1- 10 mm); massive to foliated; CI 10- 20
Garnetiferous leucogranite: white to pale pink, medium to coarse grained; homogeneous to
36
50
13
chlorite- sericite schistose rock with remnants of white leucosome and rare pseudomorphed
<10, rare blue quartz (biotite- quartz- feldspar ± garnet); rarely magnetic
80
10
Mylonites containing white leucosome remnants: grey- green, fine- to medium- grained
80
75
Db
70
82
85
Di
chlorite- sericite schistose rock with remnants of pink granitoid; non-magnetic
psammopelitic sedimentary remnants, but some layering produced/enhanced by shearing; CI
Deep Lake
60
57
85
31
Camsell Point
L
18
Dark Lake
6605000
Asp
80
6605000
64
Mylonites containing pink granitoid remnants: grey-green and pink, fine- to medium- grained
GRANITOID ROCKS OF PROBABLE PALEOPROTEROZOIC AGE
77
Za
containing mm- to cm-scale feldspar ± quartz relicts in a very fine grained, flinty to recrystallized,
garnet; non-magnetic (probably derived from Zp)
80
85
80
70
Sp
Zpg
11
23
72
20
Gr
80
83
Mylonitic rocks of unknown origin: grey to brown phyllonitic mylonite to ultramylonite
85
70
67
30
Su
quartzofeldspathic matrix (chlorite- sericite- quartz- feldspar); non-magnetic
85
77
10
80
MYLONITIC ROCKS
25
67
42
55
75
48
Sp
85
55
54
57
63
64
43
51
37
~~~~~~~~~~~~~~~~~~~ Unconformity ~~~~~~~~~~~~~~~~~~~~~
45
37
50
55
55
65
Gdn
Afp
42
70
10
63
51
Zp
52
56
45
58
38
54
12
49
70
70
Db
55
72
67
Db
clasts common; rarely magnetic
Zemlak Lake
63
67
68
56
65
common; pink leucogranite, quartz, gneiss, mylonite, and metasedimentary
77
31
32
70
70
pebbly arkose; thick- bedded, matrix- supported conglomerate beds less
80
68
60
60
63
46
conglomerate, interbedded with medium-bedded, coarse-grained arkose or
85
Db
34
48
Zpg
52
51
32
15
82
52
75
56
50
32
Rcc
52
Zpg
23
60
15
27
50
40
Tpg
42
55
63
Gulo Lake Member: grey, polymictic, pebble- cobble, clast- supported
30
75
Cu
60
33
34
27
45
pebbly arkose with thin argillite partings; thin to medium bedded; variably
magnetic
72
52
Sp
63
31
612000
58
Tpw
21
70
611000
50
Tcf
60
70
40
Zp
610000
6607000
599000
6606000
598000
Tpc
109°W
597000
109°W
77
36
27
67
80
72
70
60
80
85
Mx
90
68
52
73
60
20
45
20
70
Zu
pegmatitic leucogranite with sericite- chlorite shear foliation, quartz and feldspar porphyroclasts,
22
70
55
54
32
Psammopelitic to pelitic gneiss- migmatite, rare interbedded quartzite: grey- brown, fine to
70
5
Zp
85
Lake Athabasca
42
25
70
50
33
78
52
77
36
32
63
10
54
45
42
55
10
85
20
55
50
57
24
75
22
85
Mx
40
U
Gd
20
20
23
Pp
85
65
27
75
75
83
80
62
70
64
75
Gdn
80
Gom
Utim Lake
80
45
some may represent a border phase of the gneissic granodiorite
6600000
65
60
60
56
32
52
Go
70
75
60
30
Granodioritic orthogneiss- migmatite: pink, brick red or grey, fine to medium grained; variably
sheared; CI 0-20 (biotite- quartz- feldspar ± hornblende ± allanite); commonly contains deformed
and metamorphosed mafic dykes and sheets of medium-grained leucogranite; (may be
75
Gom
45
65
where homogeneous, fine to medium grained where gneissic, (hornblende- plagioclase ± biotite);
intruded by 30% m- scale sheets of pink leucogranite south of Charlot River; non magnetic;
57
70
83
55
non-magnetic phase
Tonalite- gabbro: weathers green, white & black on fresh surface, medium to coarse grained
Di
70
70
magnetic phase
57
77
6600000
and 10% amphibolite (probably dykes) variably magnetic
88
80
70
coarse grained and megacrystic; variably mylonitized; CI 15-25, (hornblende- biotite- feldspar-
Gdm
75
70
Gneissic granodiorite: grey paleosome and up to 30% pink leucosome, medium to locally
quartz ± allanite); commonly injected by ~20% sheets of pink medium- to coarse-grained granite
65
70
78
Island Bay
Amphibolite: black, fine to medium grained; variably layered (hornblende- plagioclase)
FOLIATED TO GNEISSIC GRANITOIDS OF PROBABLE ARCHEAN AGE
22
80
25
homogeneous to gneissic; generally mylonitized to form porphyroclastic foliate
76
25
22
52
15
Za
U
30
65
Pelitic migmatite-diatexite: grey- brown to white, medium to coarse grained,
67
73
Gw
Gw
as above but with 10- 20% garnet
(biotite- quartz- feldspar ± garnet); non- magnetic
Zpg
55
30
67
75
73
43
Highly garnetiferous pelitic migmatite and derived anatectic granite: same
with ~30% white medium- to coarse-grained feldspar porphyroclasts; CI ~20
Pp
5
Zpd
62
67
62
74
45
74
38
Gw
Zpg
52
15
25
sillimanite) non- magnetic;
55
53
Zpg
80
58
54
4
85
56
76
garnet
granite
23
60
medium grained; CI 20-30 (biotite- feldspar- quartz
contains up to 90% m- scale sheets of derived white to rarely pink medium- grained anatectic
52
30
blue quartz, minor sulphides, locally forms leucosome in adjacent gneisses
25
81
50
scale white leucosome; 10-30% biotite, local blue quartz; very competent; 2) rare intrusive pink-
locally pegmatitic leucogranite with biotite- chlorite shear foliation; 4) pink, medium- grained to
72
45
Mixed gneiss: various portions of: 1): grey, fine- grained, variably layered, biotite gneiss with cm-
cream megacrystic granite with amphibolite schlieren; 5-15% biotite; 3) white medium- grained to
74
65
38
6601000
60
40
60
88
47
54
58
70
88
75
59°33'0"N
65
U
6603000
31
6603000
88
65
28
88
biotite- bearing quartzite and grey- brown, fine- to medium- grained pelitic gneiss (biotite
SUPRACRUSTAL ROCKS OF UNKNOWN AFFINITY
80
62
56
88
Calcareous quartzite and gneissic to migmatitic pelite: thinly interlayered white diopside- and
(chlorite)-quartz-feldspar ± garnet); non-magnetic
70
55
50
Shore Pluton suite); typically intruded by mafic dykes
80
40
6602000
North
5
85
20
36
quartz- plagioclase- K- feldspar ± hornblende ± allanite); generally magnetic (part of ca. 2.3 Ga
53
78
70
54
grained phases; homogeneous to well layered, sheared to mylonitic; CI 5-20, (biotite(chlorite)-
MURMAC BAY GROUP
38
57
42
85
Zpg
36
63 55
54
Strike Lakes
73
63
72
6604000
44
88
59°33'0"N
60
18
Gr
71
23
42
Pink coarse-grained granite: pink, originally coarse- grained augen foliate with minor finer-
70
88
6602000
6604000
53
83
75
78
75
13
6601000
32
correlative with Gg)
70
Gom
magnetic component
Gon
non-magnetic component
75
Mx
Zpg
67
Gom
75
65
Gon
70
75
Gom
70
Granitic orthogneiss- migmatite: comprises ~20% gneiss with grey medium- grained
70
72
Gg
paleosome containing 10-20% biotite ± hornblende and cm- scale pink leucosome; ~70% injected
pink, medium- grained leucogranite, and ~10% semi-continuous amphibolite layers and schlieren,
Draper Lakes
locally contorted; also local zones of massive to weakly foliated, medium-grained, hornblendic
597000
598000
599000
109°15'W
600000
601000
602000
603000
604000
605000
606000
607000
608000
609000
610000
611000
612000
granitoid (biotite- feldspar- quartz ± hornblende); magnetic
Tonalitic orthogneiss- migmatite: white, medium grained, leucocratic, locally
Ggt
contains layers or schlieren of amphibolite (biotite- quartz- feldspar ±
hornblende); non- magnetic
Mylonitized granitic orthogneiss- migmatite: pink
Ggm
and grey, fine grained, layered ultramylonite derived from Gg and Ggt, (10-15%
biotite), local post- mylonitization hornblende and allanite growth, minor pink oval
feldspar porphyroclasts up to 1 cm; may include minor mylonitized unit L
(All units may not be present on this map sheet)