precambrian geology of the seal river region, manitoba
TRANSCRIPT
!
!
!
!
!
!
Na1, Na4-6
Sp2, Sp3
Sp9
Sa8
Na1, Na4-6
Sa9
Sa9Sa8
Sp5
Sp5
Sp1
Sa9
Sp5Sp1 Sp2, Sp3
Sp5
Sp4Sp4
Sp4
Sp5
Sp8Sp9
Sp4
Na1, Na4-6
Sa8Sp6
Na4Na2
Na1
Sp6
Sp1
Sp1
Sa9
Sa6
Sa8
Sa9, Sa8
Sa1-5, Sa7
Sp2, Sp3
Sp1
Sp6Sp1
Sp9
Sa9Sa8
Na5
Na4
Na5
Na5
Na2
Na1Na3
Na2
Na5
Na4
Na3
Na2
Sa21Sp11
Sa22Sa18 Sap4
Sa17
Sa18
Sa18
Sa18
Sa14
Sa18
Sa12
Sa12
Sa17
Sa15
Sa13
Sa12
Sa21, Sa15
Sa16Sa11
Sa12
Sa10
Sa10, 9, 8
Sa13
Sa10
Sa13, Sa12
Sp10Sp11 Sp12
Sap4
Sap3, Sp6
Sa20Sa21
Sa13
Sa19
Sa21
Sa21, Sa19
Sa21, Sa19
Sap4
Sa13, Sa12 Sa14
Sa17
Sa17
Sa12, Sa13
Sa21
Sap1
Sa15
Sap1
Sap2Sap4
Sap4Sap4
Sap3, Sp6
Sap5
Sap1
Sp10
Sp12
Sp13
Sa21
Na2, Na4, Na5
Sp2, Sp3, Sp6
Na5
Na1, Na4-6
Sa21, Sa15
Sa21, Sa20
Sa21, 22, 23
Sap2
Sa21, Sa15, Sa20
Sa10
Sa8Sa8
Sa21Sa12
DICKINS RIVER PLUTON
VINSKY LAKE PLUTON
CARIBOU RIVER PLUTON
GROSS RIVER PLUTON
GARLINSKI LAKE GREENSTONE BELT
NICHOL LAKE PLUTON
HOWARD LAKE
GREENSTONE BELT
GARLINSKI LAKE GREENSTONE BELT
The Knoll
Long Hill
Mann Island
Brooks Hill
Knife Delta
Hughes Hill
Harris Hill
Smith Esker
Young Esker
Morris Esker
Madge Island
Simpson Hill
Great Island
Cameron Hill
Graham Esker
Russell Esker
Walton Island
Rankel Island
Sinclair Hill
Pollock Island
Vincent Island
Daniels Island
Gilmour Island
Rankine Island
Lavarie Island
Johnston Esker
Richardson Hill
Baker Peninsula
McMurachy Island
Stodgell Islands
St. Croix Island
George Thomson
Island
Kirk River
Seal River
Steel River
Clarke River
Duffin River
Dickins River
Caribou River
Wolverine River
Big Spruce River
South Knife River
Dechanhooledezay River
Hudson Bay
Long Lake
Post Lake
Witt Lake
Lees Lake
Lane Lake
Butt Lake
Neff LakeLobb Lake
Pady Lake
Coll Lake
Keir Lake
Crave Lake
Tully Lake
Sac Rapids
Gross Lake
Craib Lake
Sothe Lake
Obuyi Lake
Omand Lake
Donen Lake
Vinie Lake Beitz Lake
PolisLake
Cohen Lake
Fabas Lake
Lovat Lake
Bozak Lake
Glenn LakeTraer Lake
Vinsky Lake
Catton Lake
Mink Rapids
Kwasny Lake
Sirett Lake
Koleda Lake
Travis Lake
Dingle Lake
McCann Lake
Warner Lake
Gugins Lake
Hebner LakeNaelin Lake
Sellar Lake
Spruce Lake
Minter Lake
Mullin Lake
Preece Lake Meades LakeHoward Lake
Zayets Lake
Eppler Lake
Dymond Lake
Toupin Lake
Passey Lake
Shanas Lake
Nowell LakeIngram Lake
Silkey LakeAitken Lake
Kerman LakeWright
Lake
Nichol Lake
Genest Lake
Burch Rapids
Mason Rapids
Caribou Lake
Stubner Lake
Pakulak Lake
Hanscom Lake
Renault Lake
d'Arcis LakeTourand
LakeWashook LakeQuigley Lake
Thagard Lake
Dolding LakeSwitzer Lake
Ferrier Lake
Toshack Lake
Shumsky Lake Weidner Lake
Wozniak Lake
Yonkers Lake
Goddard Lake
Bocking Lake
Howanyk Lake
Thousin Lake Duddles Lake
Dunnett Lake
Dorrian Lake
Nodrick Lake
Rewucki Lake
Teepee FallsBateman Lake
Olafson Lake
Kelly Rapids
McMurchy Lake
Benville Lake
Larocque Lake
Hoguycho Lake
Cavaghan Lake
Chrupalo Lake
Aldridge Lake
Menzoski Lake
Osadchuk Lake
Zadworny Lake
WalmsleyLake
Stodgell LakeHeathman Lake
Simundson Lake
Thibedeau Lake
Harbottle Lake
Thekakaya Lake
Garlinski LakeKesselman LakeSosnowski Lake
McEachnie Lake
Douglas Rapids
Morrice RapidsRussell Rapids
Thibeault Lake
Kuytoocho Lake
Markoskie Lake
Kendyfore Lake
Oxenforth Lake
Carlstrom Lake
Futoranski Lake
Antonyszyn Lake
Tambanay Rapids
Mallindine Lake
Deslaurier Lake
Ploschansky Lake
Nykolaishen Lake
Wolochatiuk Lake
Birch Canoe Lake
Farquharson Lake
Kirkpatrick Lake
Richardson Rapids
Schoenthaler Lake
John Campbell Lake
Benjamin Cook Lake
Avery Collins Lake
Albert MacKay Lake
Leonard Smith Lake
Frederick Anderson Lake
Wither Lake
Haywood Lake
Pincock Lake
Thuykay Lake
Seal River
Seal River
Seal River Seal River
WhittakerIsland
Scott Esker
Paul Point
North RiverBeech Point
Woodcock Point
Gardiner Point
Point of the Woods
5
5
7
4
5
4
1 1
2
7
9
85
45
40
63
56
81
75
73
68
85
6385
64
88
75
71
40 50
86
68
63 7679
10
8875
79 51
80
7121
88
85
45
86
18
75
80
1080
83 83
85
35
85
2085
80
80
80
80
77
75
85
85
82
75
80
62
88
70
85
80
18
2545
36
75
80
77
2280
18
82
66
87
45
80
80
75
82
8170
36
80
84
40
85
83
83
90
3890
38
15
85
90
90
80
80
75
8578
87
85
9085
4545
90
7272
80
80
80
70
75
76
85
80
83
86
71
65
6050
5555
85
3870 75
87 87
15 42
4855
46
85
5555
25
88 88
80
55
40
83
70
54 81
77
6040858570
6660
827520 572581
75
80
80
85
85
80
70
80
90
35
79
80
60
74
38
22
30 84
16
20
85
75
75
85
80
85
87
8290
85
85
90
72 90
80
78
67
70
87
80
90
85 90
73
90
80
85
90
80
35
40
9085
20
86
85
85
81
85
85
80
82
90
9082
9085
88
85
85
8579
86
85
90
8580 81
70
8085
9086
85
85
8485
90
80
85
85
85
85
78
85
60
85
85
85
85
90
807785
75
85
80
78
75
82
78
90
78
78
82
80
40
708579
6085
8030
85
2030
22
8530
80
7755
80
3532
88
75
75
78
30
7831
80
22
76
807540
575085
8866 75
70
4086
60
52
85
80
75
85 40
75
80
8388
85
89
87 38
79
30
65
85
64
27
20
2013
83
3578
42
20
82
80
8913
54
70
80
25 40
8172
82
86
60
8043
80
7255
67
67
84
79
20
25
10
10
15
10
6565
85
76
82
2580
40
61
80
70
80
78
40
85
2937
85
80
8080
7468
8533
84
7680
717563
62688132
6450
4726
75
46
25
65
40
85
40
85
85
20
10
20
5374
85
82
45
62 71
75
85
20
39
45
50
60
60
57
60
81
80
70
85
85
65
89
7585
69
8370
64
85
56 68
74
85
85
40
45
40
80
82
83
85
83
10
10
60
20
80
64 80
80
48
8283
40
58
83
75
85
85
87
85
8060
10
75
6980
60
86
40
17
75
36
85
80
45
75
74
73
77
82
83
50
70 79
75
5670
5084
65
83
87
8972
82
74
75
84
89
80
84
85 77
85
80
26
70
80
60 40
40
80
45
85
88
84
736673
3469
85
8560
60
80
75
50
48
82
7585
89
80
80
80
85
87
85
85
85
49
46
79
7465
85
80
85 8020
69
76 74
8672
7780
85
7089
85
83
77
75
69
72
7383
76
81
84 80
81
83 6550
85
80
51
42
7069
63
75
62
76
7611
75
2760
79
73
80
7683
84
82
5150
1664
71
68
8430
6736
75
71
75
54
50
49
80
75
11 12
4344
75
82
82
58
85
6080
75
25
76
79
70
83
69
79
71
70
35
8160 2159
7676
7170
80
7071
7066
7176
72
72
71
4545
8026
54
70
1413
63
67
55 47
5966474428
52 8975 75
60
75
5975
78
50
56
3074
82
8885
55
76
66
71
51
72
81
75
80
79
46
76
68
75
26
72
8581 76
786076
80
61
82
75
74
61
85
83
82
75
76
65
80
82
77
51
22
7780
8976
72
64
78
76
87
66
8179
81
64
82
70
8585
85
75
8476
8270
35
81
3429
85
63
85
83
75
66
52 57
76
75
858086
78 82
78
70 7081
81
7371
88
64
7460
5080
8674
7983
6460
70
76
86
37
64 80
75
76
72
74
6577
82
88
85
77
3288
5775
80857980
7034
73
7334
2423
50
52
20
74
57
63
10
85
88
76
81
64
59
69 55
83
30
58
6630
8529
44
85
82
6789 80
8580
57
85
77
74
65
76
6972
60
85
82
774255
87
85
80
80
74
71
80
82
7978
85
60
25
80
82
8064
48
5075
72
81
81
62
72
48
70
20
4255
19
69
25
19
40
62
60
65
32
897073
8331
2277
6082
62
27
13
7780
6511
82
8176
73
78
24
21
745772
41
857281
22
4745
10
64
79
70
82
72
708076
6580
76
74 72
76
72
58
51
81
80 32
7156
63
66
69
73
80
26
81
88
7276
40 61
41
70 70
6055
51
67 49
48
85
7475
8355
893049
46
60 52
89
75
65
89
8086
87
65
50
20
7020 30
53
82
44 14
79
81
81
65
80
50
84
80
80
75
77
76
80
80
19
76
2560
70
28
8080
70
32
8536 63
65
63
83
8060 74
7570
89
66
85
24
24
40
80
7555
48
14
48
74
75
817765
80
85
636074
1764
1520
398420 35
20
44
64
2755
72
75
88
80
45
65
6917
74
74
75
40
80
56
65
65
50
8040
4560
8577
72
80
46
67
85 86
80
8074
71
84
57 8085
60
75
5670
60 84
856835
51
71
8577
87
57
82 63
84
90
68
77
62
90
87
8877
86
68
85
71
55
71
78
74
86
82
84
64
78
74
9073
26
6284
7762
86
45
82 66
60
82
49 24 6731
72
45
88
84
69
76
49
80
36
42
3865
74
36
4253
34 52 6379
2474
2844
268343
72
85
54
5668
5171 66
63
4435 5772
84
71
79
4243
35
8542
26
85
8386
64
80
78
85
70
60
58
85
60
55
65
80
55
7585
78
73
85
85
90
62
80
85
86
85
85
85
85
68
62
75
75
80
70
78
80 36
85
84
62
67
8053
79
72 42
5256
5553
6065
64
85
35
76
75
73
80
75
72
65
23
50
85
76
75
38
7381
30
85
75
82
75
79
75
85
53
50
600 000
600 000
620 000
620 000
640 000
640 000
660 000
660 000
680 000
680 000
700 000
700 000
720 000
720 000
740 000
740 000
6 500
000
6 500
000
6 520
000
6 520
000
6 540
000
6 540
000
6 560
000
6 560
000
6 580
000
6 580
000
6 600
000
6 600
000
6 620
000
6 620
000
6 640
000
6 640
000
0 10 20 kilometres
LegendOrdovician limestone, sandstone
Seal River DomainPaleoproterozoicSequence 4 (<1.88 Ga)
Sp13 Quartz arenite with subordinate mudstone
Sp12 Greywacke-mudstone turbidites; feldspathic
Sp11 Iron formation; oxide facies
Sp10 Greywacke-mudstone turbidites; quartzose; <1.88 Ga
Sp9 Iron formation; oxide facies
Sp8 Dolomitic marble and calcsilicate rocks
Unconformity ––––––––
Sp7 Pegmatite; biotite–muscovite±garnet
Sp6 Biotite–muscovite granite (±garnet, fluorite)
Intrusive contact ––––––––
Sequence 3 (<1.98 Ga)Sp5 Mudstone with subordinate arenite interbeds
Sp4 Dolomitic marble
Sp3 Quartz arenite with subordinate mudstone interbeds; <1.98 Ga
Sp2 Thinly interbedded arenite and mudstone; <2.05 Ga
Sp1 Iron formation; silicate facies
Unconformity ––––––––
Paleoproterozoic or Late Neoarchean (?)Sequence 2 (<2.5 Ga)
Sap5 Basalt
Sap4 Gabbro; possibly includes east- to east-northeast-trending gabbro dike swarm
Sap3 Psammitic and semipelitic paragneiss; ca. 2.56 Ga
Sap2 Mudstone with subordinate arenite
Sap1 Quartz arenite with subordinate conglomerate and mudstone; <2.5 Ga
Unconformity ––––––––
Late NeoarcheanIntrusive rocks
Sa23 Granitic pegmatite; biotite
Sa22 Alaskite
Sa21 Granite, granodiorite, quartz diorite; 2550±4 Ma
Sa20 Quartz±feldspar porphyry; 2562±5 Ma
Sa19 Syenogranite, quartz syenite; typically fine grained; 2570±5 Ma
Intrusive contact ––––––––
Sequence 1 (<2.7 Ga, >2.57 Ga)Sa18 Quartz arenite with minor mudstone and conglomerate
Sa17 Arenite and polymictic conglomerate; <2.7 Ga
Unconformity ––––––––
Intrusive rocksSa16 Serpentinite, peridotite, gabbro
Sa15 Biotite±hornblende granite, granodiorite, tonalite; gneissic; minor amphibolite
Fault contact? ––––––––
Sosnowski Lake assemblageGarlinski Lake and Howard Lake greenstone belts
Sa14 Feldspar-quartz porphyry; 2679±6 Ma
Sa13 Volcaniclastic and epiclastic rocks; <2.7 Ga, <2.61 Ga
Sa12 Dacite and rhyolite; associated intrusives
Sa11 Leucodiorite
Sa10 Andesite
Sa9 Basalt and basaltic andesite; related gabbro; minor iron formation
Sa8 Gabbro; local amphibolite along belt margins
Fault contact? ––––––––
Neoarchean to MesoarcheanSeal River Complex
Sa7 Diabase (dikes); foliated; northwest-trending
Sa6 Quartz- and feldspar-phyric rhyolite; 2570±3 Ma
Sa5 Feldspar (±hornblende, quartz) porphyry
Sa4 Hornblende diorite (dikes)
Sa3 Biotite granodiorite (dikes); 2860±4 Ma
Sa2 Biotite±hornblende granite and granodiorite; heterogeneous
Sa1 Orthogneiss; includes amphibolite or metagabbro enclaves; 2901±5 Ma
Fault contact? ––––––––
Nejanilini DomainIntrusive and supracrustal rocks
Na6 Biotite granite, leucogranite, granitic pegmatite
Na5 Potassium feldspar porphyritic granite; 'fresh'
Na4 Potassium feldspar porphyritic granite; recrystallized
Na3 Mafic granulite
Na2 Paragneiss
Na1 Unseparated biotite±hornblende granite, granodiorite; variably gneissic; 2527±2 Ma
SymbolsPlanar structures
Bedding: tops unknown, known, overturned
Pillows: tops unknown, known, overturned
Flow contact: tops unknown, known
Igneous layering: tops unknown
Foliation
Gneissosity
Fold axial plane
Dike
Linear structures
Fold axis: symmetry unknown, S, U, Z
Lineation (includes stretching and mineral lineations)
Dikes inferred from magneticsMp1 Gabbro (ca. 1.27 Ga Mackenzie swarm)
Sap4 Gabbro
Np1 Diabase? (ca. 2.45 Ga Kaminak swarm?)
Geological contacts (in part inferred from geophysical data)
Form line
Fault
Mapping limit
Extent of Western Warrior magnetic data (AFN 94732)
Extent of BHP Billiton magnetic data (AFN 74007)
Extent of GSC magnetic data (Fortin et al., 2009)
1:175 000
Precambrian geology of the Seal River region, Manitoba (parts of NTS 54L, M, 64I, P)
Geology by: S.D. Anderson, C.O. Böhm and E.C. SymeThis map is a provisional summary of work carried out during the summer field season and is produced directly
from the geologist's manuscript. It is not to be regarded as a final interpretation of the geology of the area.This map is available to download free of charge at www.manitoba.ca/minerals; to purchase a copy
contact Publication Sales at 1-800-223-5215 or (204) 945-4154 or [email protected].
SUGGESTED REFERENCE:Anderson, S.D., Böhm, C.O. and Syme, E.C. 2010: Precambrian geology of the Seal River region, Manitoba (parts of NTS 54L, M, 64I, P); Manitoba Innovation, Energy and Mines, Manitoba Geological Survey, Preliminary Map PMAP2010-1, scale 1:175 000.
Cartography by S.K.Y. LeePublished by:
Manitoba Innovation, Energy and MinesManitoba Geological Survey, 2010
62I
63I
62J 52L
62F
64I
52E
53J63J
62K
62H
62P
53L
53F63F
62G
63A63B
62N
53E
53D63C
62O
53K63K
63H
64J
52M
63P
63G
54A
54L
54F
54B
64F
64A
53N
64B
63N
54E
54C
53O
54D64C
63O
54H
54K64K
64H
53M
54G
64P
64G
64N 64O 54M PMAP2010-1
0 100 200
kilometres
IndexMap
Ó Ó
ÓÓ
Preliminary Map PMAP2010-1
SOURCES OF AEROMAGNETIC DATA:Assessment File 74007, Manitoba Innovation, Energy and Mines, Winnipeg. Airborne magnetic and MEGATEM Survey, Seal River and Keewatin blocks, Churchill, Manitoba. BHP Billiton World Exploration Inc. Assessment File 94732, Manitoba Innovation, Energy and Mines, Winnipeg. High resolution aeromagnetic survey (HRAM) logistical report for Western Warrior Resources Ltd, Eppler Lake Project, Churchill area, Manitoba, NTS 54L/13, 54M/4, 64I/16, & 64P/1.Fortin, R., Coyle, M., Carson, J.M. and Kiss, F. 2009: Airborne geophysical survey of the Great Island and Seal River area, Manitoba (NTS 64P/03, 64P/02, 64P/01 and part of 54M/04, 64I/16 and part of 54 L/13, 64I/15, 64I/14, 64I/11, 64I/10, 64I/09 and part of 54L/12, 64I/07, 64I/06, 64I/08 and part of 54L/05, parts of 64I, 64P, 54L and 54M); Geological Survey of Canada, Open File 6065 to 6076; Manitoba Science, Technology, Energy and Mines, Manitoba Geological Survey, Open File OF2009-1 to OF2009-12, 1 DVD-ROM (120 colour maps), scale 1:50 000.Viljoen, D., Chackowsky, L., Lenton, P. and Broome, H.J. 1999: Geology, magnetic & gravity maps of Manitoba: A Digital Perspective; Geological Survey of Canada, Open File D3695; Manitoba Energy and Mines, Geological Services, Open File Report OF99-12, 1 CD-ROM.
94°30'W
95°0'W
95°0'W
95°30'W
95°30'W
96°0'W
96°0'W
96°30'W
96°30'W
97°0'W
97°0'W
97°30'W
97°30'W
60°0'
N59
°40'N
59°40
'N
59°20
'N
59°20
'N
59°0'
N
59°0'
N
58°40
'N
58°40
'N
0 25 50 kilometres
Viljoen et al., 1999