2 0 0 600 400 400 100 200 300 400 500 500 400 300 100 300 400 300 200 20 0 30 0 2 0 0 3 0 0 4 0 0 100 100 100 900 800 700 700 800 900 500 400 3 0 0 2 0 0 100 100 200 300 200 100 2 0 0 100 100 200 300 400 500 600 700 300 100 2 0 0 300 200 200 100 100 100 100 100 100 200 300 400 500 600 700 800 900 1000 1100 3 0 0 200 1 0 0 100 200 300 100 200 300 400 500 600 700 800 900 10 0 TWIN PEAKS A V T T V A u K K u K u K u K u Q u ls N uK I J di u K u K u K N uK N uK N uK N uK I J di-qmz I J J B f f cg C lK u K qdi-mz J I ls u K s PB J s PB J u Q u Q K u B J gd I J ls u K cg C lK cg C lK cg C lK sn C lK sn lKC sn lK C K u K u ls u K Q u Q u Q u Q u u K u Q u Q u Q u Q u Q u P? u Q u Q a u P mi Q u K u u K u K u K u K u K u K u K u K u K u K Q u u Q u Q u Q K u J s J s u K K u T A V T A V GEOSCIENCE MAP 2000 - 8 A-P f m (Pl)Y A-P f m u K (Pl)Y A-P m f u K (Pl)Y K u m f AY (Pl)Y K u m f P ( p i ) (Pl)Y f A-P m u K A-P f (Pl)Y m K u (Pl)Y A- f m u K P AY K u m f u Km (Pl)Y f A-P Y A f m u K K u m f AY P- P(Pl)Y K u m f AY f m u K ( p i , p b r ) u K P(Aug,Pl,Hb), J B mi (vsn,vsl,dbr,ftvx) ltlx tbr,vbr (Pl,Hb)Y A-P f mi B J ltlx(dbr,vbr) AS J B f f AS AYS f m uK Bcg K u ls P f mi B J (Pl)Y (Pl)Y A-P J Bmi f (ltl,ltlx,vsn,vbr) A-P(Pl)Y, ltl u P V ltlx,vbr ,csl,vsn,sls AY (mi f u P A-P(Aug,Pl), f Vmi ltlx (Aug) (vsn,sls) u Q ltlxw(dbr) f B J lKL J I di Q u Q u Y A f m u K K u m f AY K u m f A-P(Pl)Y J I gd ltlx (Aug,Pl), J B ? f mi B J u K m f A-P(Pl) m f AY, K u AY u K f m A) f (mi Vmi u P A-P(Pl)S, f J B u PVmi f A-P(Pl) I J K u m A-P f (Pl)Y K u s PB J B J ltlx mi (Pl,Hb,Aug), vbr tbr,vbr (Pl,Aug,Hb), t-br,ltlx J B (ltlx,t-br,vbr) P J Bmi f (Pl,Aug,Hb) J Bmi f A-P ltlx,t-br,vbr,vsn (Pl,Hb,Aug) s PB J MAHATTA CREEK 92L/5 ) Q u cg B uK us uK cg B uK l t l x , v b r , l t l (hbr) pi,pbr ,pi t-br,vsn t - b r , v b r , v s n , s l s V A T s PB J P? u J l t l , t - b r , B f A-P(Pl)S mi P u a u Q P u P u PORT HARDY PORT McNEILL Coal Harbour Cluxewe Mountain ISLAND COPPER Thomas Point Suquash MALCOLM ISLAND Haddington Island Frances Lake Hankin Point Kenny Point Stewart Point Fort Rupert BAY HARDY RUPERT INLET Nimpkish Lake O ' Connor Lake Sara Lake Lake Waukwaas Creek Washlawlis Cr e e k Cluxewe River River Keogh Ke o gh River Marble Riv er Varney Bay Quatse River QUEEN BROUGHTON STRAIT Coetkwaus Creek Klootchlimmis BU C H H O L Z Julian Cove Smith Cove C H A N N E L Kultus Cove Alice 57 61 58-60 60 61 62 63 67 70 95 99 111 113 135 136 137 138 139 140 141 146 150 153 158 159 160 172 173 175 177 209 218 268 272 273 278 282 283 285 286 287 290 297 298 315 316 317 318 319 321 323 326 327 344 347 151 167.8 ± 8.2 Hb 176.0 ± 3.4 Hb 172.6 ± 3.9 Bi 157 ± 11 Pl 167 ± 13 Hb 160.0 ± 1.4 Kf 93 78 97 95 9 12 15 36 37 26 28 32 33 34 35 39 38 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) 146 145 152 154 65 36 66 82 90 102 109 113 232 80 55 50 52 57 76 85 87 17 14 11 15 177 4 5 6 7 12 16 31 1 2 3 19 20 112 104 106 110 46 48 162 165 169 170 179 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 57 2 53 I 57 63 I 63 I Basaltic Least altered Least altered lKL uK N m V? mi PIT I J di-qmz ls u K s PB J s PB J aphanitic / 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 l x x l pyroclastic breccia tuff-breccia lapilli tuff tuff pillow lava pillow breccia pbr t-br lt t f pi pibr welded w vitric crystal lithic porphyritic (1-5mm) amygdaloidal v x l A P Y S hyaloclastite h breccia conglomerate sandstone siltstone shale limestone br cg sn sl sh ls Lithology: Descriptors: v t l laharic tuffaceous volcanic Prefixes: Suffixes: ** 1 2 d c 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 J B J B mudstone md s silty / sandy a argillaceous plagioclase olivine Pl Ol high-Ca clinopyroxene Aug (includes flow breccia) orthopyroxene Opx hornblende Hb 2 1 3 parentheses denote minor lithologies (sn, vbr) River NEROUTSOS INLET Colony Lake Cove u Q u P Quatsino Narrows Michelsen Islands Ildstad Point Quattische Point Sherberg Point Point Evenson QUATSINO Islands Islet Jesdal Island Cross Point Lakken Islet Norgar Pamphlet Holloway Point DRAKE ISLAND Island Kokwina Byng Mt. Cove Bergh Point Thorp Leeson Point Sorenson Ohlsen Cove Atkins Cove Cove HOLBERG INLET STRAIT CHARLOTTE s PHB J B J Wanokana Creek (Pl), P f mi B J dbr B J dbr B J dbr I J 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 SYMBOLS Geological 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 T 30 defined approximate inferred defined inferred approximate (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 PLUTON Straggling Islands Apple Bay Q u a t se L a k e Jenk i nson C ree k QUATSE PLUTON WANOKANA BATHOLITH Kains Lake Dick Bo o t h Creek GLENLION PLUTON Glenlion River Tsu lquate River Geo r gie L ak e 14 64 45 33 25 34 30 25 10 35 16 30 24 0 37 35 33 50 12 17 78 20 12 10 70 64 35 62 45 22 20 15 30 42 55 23 40 50 35 47 45 35 0 42 0 0 35 55 25 63 33 50 50 50 55 45 71 30 20 34 30 36 31 15 60 27 76 80 70 60 10 32 28 41 26 30 43 37 16 15 22 05 12 22 25 05 85 20 43 15 20 35 27 35 25 20 69 30 65 40 55 82 60 62 43 26 33 87 17 28 75 40 45 52 46 39 36 44 45 0 56 40 45 70 43 55 60 48 20 35 28 32 15 32 22 35 43 29 55 10 15 36 35 24 50 40 44 71 44 56 30 17 12 52 66 33 38 18 30 65 40 87 40 44 38 38 37 57 10 39 55 20 41 33 14 85 07 53 36 43 70 50 47 48 37 57 64 42 73 52 25 53 75 57 51 52 45 71 62 67 67 45 55 69 40 32 44 20 42 55 34 44 80 40 T T T T T 5 78 50 73 60 22 25 30 28 31 73 10 65 54 55 35 52 45 30 75 48 50 54 72 28 35 72 74 26 31 26 70 90 77 29 70 83 70 61 75 63 57 76 34 50 72 88 75 85 84 73 77 80 65 74 73 35 34 7 2 45 40 53 80 70 78 44 49 48 39 47 73 83 68 44 60 13 37 0 55 65 30 52 85 65 70 76 76 48 80 87 50 25 24 47 13 42 34 13 15 15 25 32 26 27 30 33 33 47 55 38 20 37 15 15 40 Primary mineral foliation in plutonic rocks (inclined) 70 10 15 Kilometres 1 0 SCALE 1 : 50 000 NTS 92L/11, 12E Geological Survey Branch 1 2 3 4 Ministry of Energy and Mines Energy and Minerals Division PALEONTOLOGY by M. J. ORCHARD and T. TOZER (Geological Survey of Canada) J. PALFY (Hungarian Natural History Museum) F. CORDEY (University of Lyon) GEOCHRONOLOGY by D. A. ARCHIBALD (Queen's University) R. M. FRIEDMAN (The University of British Columbia) GEOLOGY by 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 G E O L O G I C A L B R I T I S H C O L U R V E Y U M B I A GEOLOGY OF THE QUATSINO-PORT McNEILL MAP AREA, NORTHERN VANCOUVER ISLAND ? f mi B J 8 Kf 167.8 ± 8.2 Hb GRID NORTH MAGNETIC NORTH TRUE 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 Olympic Peninsula British Columbia Quatsino-Port McNeill Map Area Pacific Ocean C a n a d a U S A Geoscience 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 J Bf J Bif N uK L lK u P u P V u P u Q u K J I a J s Undivided 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). A V T 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. JBmi Plagioclase-megacrystic basaltic lavas locally intercalated with, and laterally equivalent to, aphanitic flows near the base of the "Bonanza Volcanics". PBs TJ 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. B TJ , 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. ls u K T CARNIAN(?) TO SINEMURIAN LAYERED ROCKS J B B TJ ls u K T u K T BLUMBERG FORMATION CENOMANIAN OR EARLY TURONIAN TO ?SANTONIAN c Massive 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 C lK sn C lK cg B us uK J B 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 06 05 04 03 02 01 600000E 99 98 97 96 95 94 93 92 92 93 94 95 96 03 97 98 99 600000E 01 02 04 05 06 09 08 07 15 14 13 12 11 610000E 21 620000E 19 18 17 16 28 27 26 25 24 23 22 34 33 32 31 630000E 29 640000E 39 38 37 36 35 41 96 97 98 99 5600000N 01 02 03 04 91 92 93 94 95 22 21 5620000N 05 06 07 08 09 5610000N 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'