DRAFT COPYcmscontent.nrs.gov.bc.ca/geoscience/PublicationCatalogue/Geoscie… · ltlx,t-br,vbr,vsn...
Transcript of DRAFT COPYcmscontent.nrs.gov.bc.ca/geoscience/PublicationCatalogue/Geoscie… · ltlx,t-br,vbr,vsn...
200
600
400
400
100
200
30040050
0
500
400
300
100
300
400
300
200
200
300
200
300
400
100
100
100
900
800
700
700
80090
0
500
400300
200
100
100
200
300
200100
200
100
100
200
300
400
500
600
700
300
100200300
200
200
100
100
100
100
100
100200300
400
500
600700
800
900
1000
1100
300200
100
100
200300
100200
300400
500
600700
800900
100
TWIN PEAKS
AVTT VA
u K
Ku
Ku
Ku
Ku
Qu
ls
NuK
IJ di
u K
u K
u K
NuK
NuK
NuK
NuK
IJ di-qmz
IJ
JB f f
cgClK
u Kqdi-mzJI
lsu K
sPBJ
sPBJ
u Q
u Q
Ku
BJ gdIJ
lsu K
cgClK
cgClK
cgClKsnClK
snlKC snlKC
Ku Ku
lsu K
Qu
Qu
Qu
Quu K
u Q
u Q
u Q
u Q
u Q
u P?
u Q
u Q
au P
mi
Qu
Ku
u K
u K
u Ku K
u K
u K
u K
u K
u K
u K
Qu
u Q
u Q
u Q
Ku
J s
Js
u K
Ku
TAV
TAV
GEOSCIENCE MAP 2000 - 8
A-Pfm (Pl)Y
A-Pfmu K (Pl)Y
A-Pm fu K (Pl)Y
Ku m f AY
(Pl)YKu m f P (pi)
(Pl)Yf A-Pmu K
A-Pf (Pl)YmKu
(Pl)YA-fmu K P
AYKu m f
u Km (Pl)Yf A-P
YAfmu K
Ku m fAY
P- P(Pl)YKu m fAYfmu K (pi, pbr)
u K
P(Aug,Pl,Hb),JBmi(vsn,vsl,dbr,ftvx)
ltlxtbr,vbr
(Pl,Hb)YA-PfmiBJltlx(dbr,vbr)
AS
JB f f AS
AYSfm
uKBcg
Ku ls
PfmiBJ (Pl)Y
(Pl)YA-PJBmi f(ltl,ltlx,vsn,vbr)
A-P(Pl)Y,ltlu PV ltlx,vbr,csl,vsn,slsAY(mi f
u P A-P(Aug,Pl),fVmiltlx(Aug) (vsn,sls)
u Q
ltlxw(dbr)fBJ
lKL
J I diQu
Qu
YAfmu K
Ku m fAY
Ku m fA-P(Pl)Y
JIgd
ltlx (Aug,Pl),JB
?fmiBJ
u Km f A-P(Pl)
m f AY,Ku
AYu K fm
A)f(miVmiu P
A-P(Pl)S,fJB
u PVmi f A-P(Pl)
IJ
Ku m A-Pf (Pl)Y
Ku
sPBJ
BJ ltlxmi (Pl,Hb,Aug), vbr
tbr,vbr(Pl,Aug,Hb),
t-br,ltlxJB
(ltlx,t-br,vbr)PJBmi f (Pl,Aug,Hb) JBmi f A-P
ltlx,t-br,vbr,vsn(Pl,Hb,Aug)
sPBJ
MAHATTA CREEK 92L/5
)
Qu
cgBuK
usuK
cgBuK
ltlx,vbr,
ltl
(hbr)
pi,pbr
,pi
t-br,vsn
t-br,vbr,vsn,sls
VAT
sPBJ
P?u
J ltl,t-br,B f A-P(Pl)Smi
Pu a
u Q
Pu
Pu
PORTHARDY
PORT McNEILL
Coal Harbour
Cluxewe
Mountain
ISLAND COPPER
ThomasPoint
Suquash
MALCOLM ISLAND
Haddington
Island
Frances Lake
HankinPoint
KennyPoint
StewartPoint
Fort Rupert
BAYHARDY
RUPERT INLET
Nimpkish
Lake
O ' Connor Lake
SaraLake
Lake
Waukwaas
Creek
Washlaw
lis
Creek
Cluxewe
River
River
Keogh
Keogh
River
MarbleRiver
Varney Bay
Quatse
Rive
r
QUEEN
BROUGHTON STRAIT
Coetkwaus
Creek
Klootchlimmis
BUCHHOLZ
Julia
n Cov
e
Smith Cove
CHANNEL
Kultus Cove
Alice
57
61
58-60
60
61
62
63
67
70
95
99
111
113
135
136
137
138
139
140
141
146
150
153
158
159
160
172
173
175
177
209
218
268
272
273
278
282
283
285
286
287
290
297
298
315
316
317
318
319
321
323326
327
344
347
151
167.8 ± 8.2 Hb
176.0 ± 3.4 Hb172.6 ± 3.9 Bi
157 ± 11 Pl
167 ± 13 Hb160.0 ± 1.4 Kf
93
78
97
95
9
12
15
36
37
26
28
3233
34
35
3938
40,94
122
125
124
127
123
8-9
10-13
Kf
Lmt
Lmt
Lmt
198.9 (±0.5)
166.9 (± 0.5)
166.2 (±0.7)168.5 (±0.6)168.5 (+0.3/-1.7)
167.4 (±1.1)
146145
152154
65
36
66
82
90
102
109
113
232
80
55
50
52
57
76
8587
17
14
11
15
177
456
7
12
16
31
12 3
1920
112
104
106
110
46
48
162
165
169170
179
95
Stratigraphy
Least altered
Alkali metasomatized
Severely altered
Minor Intrusions
Island Plutonic Suite
Class
Classification
WHOLE - ROCK GEOCHEMISTRY LEGEND
Basalt andesite Andesite
Dacite/Rhyodacite/
Rhyolite
Alkali metasomatized
Severely altered
Major Intrusion Minor Intrusion
Alkali metasomatized
SiO (wt %) 53 572 53 I 57 63I 63I
Basaltic
Least altered
Least altered
lKL
uKN
m
V?
mi
PIT
IJ di-qmz
lsu K
sPBJ
sPBJaphanitic / fine-grained (<1mm)
lava flow
laminar flowage structures
ABBREVIATIONS AND NOMENCLATURE FOR
A compositional range is compounded (e.g. , mafic to intermediate)
Epiclastic* Pyroclastic Other**
VOLCANIC AND SEDIMENTARY ROCKS
where is composition, is lithology, and denotes other descriptors
f
m
mi
i
lxx l
pyroclastic brecciatuff-breccialapilli tufftuff
pillow lavapillow breccia
pbrt-brltt
f
pipibr
weldedw
vitriccrystallithic
porphyritic (1-5mm)
amygdaloidalvxl A
P
YS
hyaloclastiteh
brecciaconglomeratesandstonesiltstoneshale
limestone
brcgsnslsh
ls
Lithology:
Descriptors:
vt
l laharic
tuffaceousvolcanic
Prefixes:
Suffixes:
**
1
2
dc calcareous
debris flow
Composition:
listed below
where undivided
mafic (basaltic)intermediate (andesitic)felsic (rhyolitic-rhyodacitic-dacitic)
Volcaniclastic nomenclature after Cass and Wright (1988)
includes autoclastic and quench-fragmented products
pyroclastic or epiclastic (non-genetic)
3
volcanic and/or nonvolcanic constituents*mixed epiclastic/pyroclastic (tuffites) includes flow folds
megacrystic (>5mm<15mm)P
JB
JB
mudstonemd
s silty / sandya argillaceous
plagioclase
olivine
Pl
Olhigh-Ca clinopyroxeneAug
(includes flow breccia)
orthopyroxeneOpxhornblendeHb
21 3
parentheses denote minor lithologies(sn, vbr)
River
NEROUTSOS
INLET
Colo
nyLa
ke
Cove
u Q
u P
Qua
tsin
oNa
rrow
s
Michelsen
IslandsIldstad
Point
QuattischePointSherberg Point
PointEvenson
QUATSINO Islands IsletJesdal
IslandCross
PointLakken
IsletNorgar
Pamphlet
Holloway Point
DRAKE ISLAND
Island
Kok
wina
ByngMt.
CoveBergh
PointThorp
Leeson
PointSorenson
Ohlsen
Cov
e
AtkinsCove
Cove
HOLBERG INLET
STRAIT
CHARLOTTE
sPHBJ
BJ
Wan
okan
aCr
eek
(Pl),PfmiBJ dbr
BJ dbr BJ dbrIJ qdi
Hecate
Base Map Information:
Recommended Citation:
References (for geology compiled and modified both inside and outside the limit of mapping):
Roddick, J. A., and Muller, J. E. (1983): Geology Alert Bay - Cape Scott, British Columbia; Geological Survey of Canada, Map 1552A.
Massey, N. W. D., Desjardins, P. J. and Grunsky, E. C. (1994): Geological Compilation, Vancouver Island, British Columbia (92B,C,E,F,G,K,L; 102I); B.C. Ministry of Energy, Mines and Petroleum Resources, Open File 1994-6.
Base map has been produced from digital TRIM (Terrain Resource Inventory Management) 1:20 000 topographic database provided by the British Columbia Ministry of Environment, Lands and Parks.
North American Datum (NAD) 1983. Universal Transverse Mercator Projection (Zone 9). Elevation in metres above mean sea level.
Nixon, G. T., Hammack, J. L., Koyanagi, V. M., Payie, G. J., Haggart, J. W., Orchard, M. J., Tozer, T., Archibald, D. A., Friedman, R. M., Palfy, J. and Cordey, F. (2000): Geology of the Quatsino-Port McNeill Map Area, Northern Vancouver Island; B.C. Ministry of Energy and Mines, Geoscience Map 2000-6.
Digital Cartography: Mainly by J. L. Armitage.
Jeletzky, J. A. (1976): Mesozoic and ?Tertiary rocks of Quatsino Sound, Vancouver Island, British Columbia; Geological Survey of Canada, Bulletin 242, 243 pages.
Haggart, J. W. and Tipper, H. W. (1994): New results in Jura-Cretaceous stratigraphy, northern Vancouver Island, British Columbia; Geological Survey of Canada, Current Research 1994-E, pages 59-66.
5
Outcrop examined (control)
57
22
66
54
32
30
MAP SYMBOLSGeological contact:
High-angle fault (ball on downthrown side if known)
Unconformity:
Bedding (facing known: inclined, vertical)
Bedding (facing unknown: inclined)
Primary flowage structures in volcanic rocks (inclined, welding in tuff)
Stylolite orientation (bedding parallel, non-parallel)
Dike (inclined, vertical,Tertiary)
Minor fault (inclined, vertical, with plunge and trend of slickenside striations)
Plunge and trend of minor fold axes ('M', 'Z', vergence unknown)
Macrofossil locality (Tables 3, 4)
Limit of mapping
T30
definedapproximateinferred
defined
inferredapproximate
(Lmt, laumontite; Kf, potassium feldspar; Table 10)
Lithogeochemical assay locality (Table 2)
Ar - Ar mineral date (Ma ± 2 ; Hb, hornblende; Bi, biotite;
facies boundary, inferred
U-Pb Zircon date (Ma ± 2 ; Table 8) 170±2
40 39
inferred
hidden
approximate
hidden
5
MINFILE locality (092L 010; Table 1) 10
53
Whole-rock geochemistry locality (Tables 11, 13)(see whole-rock geochemistry legend)
277
Conodont locality (Tables 5, 6) 8
Radiolarian locality (Table 7)
Pl, plagioclase; Kf, potassium feldspar; Table 9)
X-ray diffraction mineral identification
RUPERT PLUTONStraggling
Islands
AppleBay
Quatse Lake
JenkinsonCreek
QUATSE
PLUTON
WANOKANABATHOLITH
KainsLake
Dick Booth
Creek
GLENLIONPLUTON
Glenlio
n
River
Tsulquate
River
GeorgieLake
14
64
4533
25
34
30
25
10
35
16
3024
0
37
35
33
50
12 17
78
20 12
10
70
64
35
62
45
22
20
1530
42
55
23 40
50
35
47
45
35
042
0
0
35
55
25
63
33
50
5050
55
45
71
30
20
34
30
36
31
15
60
27
76
80
7060
10 32
28
41
26
30
43
37
1615
22
0512
22
25
05
85 2043
15
20
35
2735
25
20
69
30
65
40
55
82
60
62
4326
3387
17
28
75 40
45
52
46
39
36
4445
056
40
45
70
43
55
60
48
20
35
28
3215
32 22
35
43
29
5510
15
36
35 24
50
40
4471
44
56
30
17
12
52
66
33
38
1830
65
40
87
40 4438
38
37
57
10
39
55
20
41
33
14
85
07
53
36
43
70
50
4748
37
57
6442
73
5225
53
7557
51 52
4571
62
67
67
45
55 69
40
3244
20
42
55
34
44
80
40
TT
T T
T
5
78
50
73
60
22
25
3028
31
73
10
65
54
55
3552
45
3075
4850
54 72
2835
72
74
2631
26
70
90
77
29
70
83
70 6175
63
57
76
34
50
72
8875
85
84
73
7780
6574
73
35
34
72
45
40
5380
70
78
44
49
4839
47
73
83
6844
6013
370
5565
30
52
85
65
70
76
76
48
80
8750
25
24
47
13
42
34 1315
1525
32
26
27
30
33
33
4755
38
20
37
15
15
40Primary mineral foliation in plutonic rocks (inclined)70
1015
Kilometres
1 0
SCALE 1 : 50 000
NTS 92L/11, 12E
Geological Survey Branch
1 2 3 4
Ministry of Energy and MinesEnergy and Minerals Division
PALEONTOLOGYby
M. J. ORCHARD and T. TOZER (Geological Survey of Canada)J. PALFY (Hungarian Natural History Museum)
F. CORDEY (University of Lyon)
GEOCHRONOLOGYby
D. A. ARCHIBALD (Queen's University)R. M. FRIEDMAN (The University of British Columbia)
GEOLOGYby
G. T. NIXON, J. L. HAMMACK, V. M. KOYANAGI and G. J. PAYIE (B. C. Geological Survey) J. W. HAGGART (Geological Survey of Canada)
G. T. NIXON, J. L. HAMMACK, V. M. KOYANAGI, G. J. PAYIE, J. W. HAGGART,M. J. ORCHARD, T. TOZER, D. A. ARCHIBALD, R. M. FRIEDMAN, J. PALFY and F. CORDEY
GEOSCIENCE MAP 2000 - 6
S
GE
OLO
G I C A L
BR
I T
I S H C O L
U RV
EY
U M
BI A
GEOLOGY OF THE QUATSINO-PORT McNEILL MAP AREA,NORTHERN VANCOUVER ISLAND
?fmiBJ
8
Kf
167.8 ± 8.2 Hb
GRID NORTH
MAGNETIC NORTHTRUE NORTH
1° 09'20° 53'
Approximate mean magnetic declination 2000 for the centre of the map area: 20° 53'E decreasing annually 9.8' to 2005
LOCATION MAP
Victoria
Vancouver
Nanaimo
Port Alberni
Campbell River
Port Alice
Island Copper
Port Hardy
92L/11, 12E
Vancouver Island
OlympicPeninsula
BritishColumbia
Quatsino-Port McNeill Map Area
Pacific OceanCanada
USAGeoscience Maps
2000-5 2000-6
2000-8 2000-7
LAYERED ROCKS
LONGARM FORMATION EQUIVALENTS
LATE VALANGINIAN TO BARREMIAN
HETTANGIAN (?RHAETIAN in part) TO MID-BAJOCIAN
CARNIAN
ALERT BAY VOLCANICS
UPPER TRIASSIC
TERTIARY
LOWER CRETACEOUS
UPPER TRIASSIC TO MIDDLE JURASSIC
QUATSINO FORMATION
PARSON BAY FORMATION
KARMUTSEN FORMATION
UPPER CRETACEOUS
NANAIMO GROUP EQUIVALENTS
"BONANZA VOLCANICS"
BONANZA GROUP
VANCOUVER GROUP
(LATE) LOWER NORIAN TO RHAETIAN (south of Holberg-Rupert inlets)
CARNIAN TO (LATE) LOWER NORIAN (south of Holberg-Rupert inlets)
INTRUSIVE ROCKS
EARLY TO MIDDLE JURASSIC
ISLAND PLUTONIC SUITE
CAMPANIAN TO ?MAASTRICHTIAN
JBf JB if
NuK
LlK
u P
u P
Vu P
u Q
u K
JI
a
JsUndivided strata of the Parson Bay Formation and overlying unnamed sedimentary and volcaniclastic rocks of the Bonanza Group outside the limit of mapping.
Undivided thin to medium bedded impure limestone, calcareous to non-calcareous mudstone, siltstone, and shale intercalated with fine-grained volcaniclastic rocks including tuff and debris-flow breccia.
Arenaceous facies: grey-green, calcareous to non-calcareous volcanic sandstone and siltstone, mudstone and shale interbedded with variable proportions of impure limestone. Locally contains vitric, lithic and crystal tuff or reworked equivalents, volcaniclastic debris-flow breccia, and minor pebbly sandstone and conglomerate.
T
T
T
T
T
T
NEOGENE
Volcanic rocks: predominantly basaltic lithic tuff and tuff-breccia of phreatomagmatic origin, lesser pillow lava, hyaloclastite, and interbedded water-washed equivalents (see table of abbreviations and nomenclature).
AVT
Undivided siliciclastic facies of the Parson Bay Formation and conformably overlying unnamed marine siliciclastic strata of the Bonanza Group: black to greenish grey, predominantly non-calcareous, very thin to medium bedded siltstone, sandstone, mudstone and shale with minor intercalated tuff and tuffaceous breccia and rare impure liimestone.
JBmiPlagioclase-megacrystic basaltic lavas locally intercalated with, and laterally equivalent to, aphanitic flows near the base of the "Bonanza Volcanics".
PBsTJ
f P
CARNIAN(?) TO HETTANGIAN OR SINEMURIAN
Medium to coarse-grained, equigranular granitoid rocks and porphyry; includes hornblende ± biotite-bearing gabbro (gb), diorite (di), quartz diorite (qdi), monzonite (mz), quartz monzorite (qmz) and granodiorite (gd).
SILICICLASTIC UNIT
HETTANGIAN (?RHAETIAN in part)
(Pl)
Predominantly felsic lavas and/or pyroclastic rocks or intermediate to felsic lavas and/or pyroclastic rocks.
, basaltic to rhyolitic, predominantly subaerial lavas and pyroclastic rocks locally intercalated with marine to non-marine, coarse to fine-grained pyroclastic, epiclastic and sedimentary rocks. Subdivided according to composition and lithology (see table of abbreviations and nomenclature).
Basaltic to rhyolitic, aphanitic to porphyritic flows, flow domes and volcanic breccia and minor volcanic conglomerate (see table of abbreviations and nomenclature).
Medium to coarse-grained arkosic to lithic wacke, pebble to cobble conglomerate, siltstone and minor coal. Locally fossiliferous.
Thinly bedded to massive sandstone, siltstone, mudstone and pebble conglomerate and minor coal.
BTJ , lithologies are probably to in age.
Thinly bedded to massive lime mudstone; silica replacements common and rare chert nodules; rare laminated interbeds and oolitic layers; locally fossiliferous.
, aphanitic to coarsely plagioclase-phyric, commonly amygdaloidal, subaerial basaltic lava flows with minor pillow basalt, pillow breccia and hyaloclastite (see table of abbreviations and nomenclature).
, thin horizons of pale grey limestone intercalated with Karmutsen basalt near the top of the succession.
lsu KT
CARNIAN(?) TO SINEMURIAN
LAYERED ROCKS
JBBTJ
lsu KTu KT
BLUMBERG FORMATION
CENOMANIAN OR EARLY TURONIAN TO ?SANTONIAN
cMassive conglomerate and minor lenses of coarse-grained lithic wacke.
Dark grey, calcareous to non-calcareous siltstone, shale and impure limestone interbedded with subordinate wacke and minor pebble conglomerate.
UPPER SHALE UNIT
CENOMANIAN TO ?TURONIAN
COAL HARBOUR GROUP
?ALBIAN
Upper sandstone facies: trough cross-laminated lithic wacke intercalated with siltstone, minor pebble conglomerate and rare coal.
Lower conglomerate facies: massive conglomerate with minor lenses of coarse-grained lithic wacke.
uK cg
ClK sn
ClK cg
B
usuK
JB
CARNIAN (north of Holberg-Rupert inlets)
DRAFT COPY
127° 24' 127° 12'
50° 30'
07 08 09 610000E 11 12 13 14 15 16 17 18 19 620000E 21 22 23 24 25 26 27 28 29 630000E 31 32 33 34 35 36 37 38 39 640000E 41
060504030201600000E9998979695949392
92 93 94 95 96 0397 98 99 600000E 01 02 04 05 06 090807 1514131211610000E 21620000E19181716 28272625242322 34333231630000E29 640000E3938373635 41
96
97
98
99
5600
000N
01
02
03
04
91
92
93
94
95
22
21
5620
000N
05
06
07
08
09
5610
000N
11
12
13
14
19
18
17
15
16
24
23
02
01
5600000N
99
98
97
96
09
08
07
06
05
04
03
16
15
14
13
12
11
5610000N
23
17
18
19
5620000N
21
22
24
90 90
95
94
93
92
91
50° 30'
50° 36'
50° 42'
50° 42'
50° 36'
127° 36'
127° 24' 127° 12'127° 36'