DEASE LAKE - LITTLE TUYA RIVER GEOLOGY QUEST-NORTHWEST PROJECT NTS SHEETS 104J/08, 07E Location Map

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1:50 000 DEASE LAKE - LITTLE TUYA RIVER GEOLOGY QUEST-NORTHWEST PROJECT NTS SHEETS 104J/08, 07E Location Map

400000 130°40'W 130°35'W 410000 30' 130°25'W 420000 130°20'W 15' 430000 130°10'W 130°5'W 440000 A YUKO

) ) N TERRITORY

( ) ) 0 1 ) 0 Ï ) 3 ( ) ) ) 3 ! 44 0 ) ) 57 ( ) ) ) 1 55 ! 0 ) JIs ( ) ) ) ) Ï U K i n g ) 28 .

) 65 ) 46 D e a s e 65 S ) ( ! .

) ! ( 40 L a k e A

) ) ) ( F 54 . Dease Lake ) ) % ! ) ) ) Ï ( ( Ï ) ) 70 51

) ) ! 50 ( T Ï ) ) ( a ) 35 fp 34 t ) ) LJqfp ( q ! s ) ) ) ) ! ( J h ( L 9 o 0 A 0

63 0 L ! BRITISH COLUMBIA 0 C

4 ! 75 ( ( r B

1 67 e

A e

k E

60 p 80 ( Ï 1 JIs

f ! 0

R ! 75 ! q ( 56 0 ! J 0 Map Area

L ( ! Qal T A

60 60 Ï 44 !

! ( (

0 18

0 ø A Ï 4 ! ( JIs 44 38 22 66 eJTcs 1 55 70 ( Ï ! 70 ( 68 65 70

1 40 68

0 7 ( Ï 0 ( 24 Ï ! Ï

0 104J 064 ( PzTrCClw

63 q ! 50 ! Ï 42 Qal ! ( 30

7 P(zTrCC(lw 66 ! 60 Ï ! Prince ( ( Ï 20 Ï 60 !

( 46 George k Ï

73 Ï Ö 88

e 104K 154 eJTcs ( PzTrCCum Ï Ï

k ( !

e e Ï E ( Ï

0 74

r e Ï 15 0 ( ø r 44 7 43 !

1 l 20 ) C Ï 15 55 C ! C ) 17 ( C ) r 83 k 52 zT l 85 ) 30 s P C

c 85 40 ) Ï

s ( rC S Ï

Ï a ! P

o o Ï Ï T l ) 37 z m MPlTv 1 (! 1 PaSPgd ) Ï a s P 65 o R ( n 0 c ) 0 s ) 8 i 1 ( Ï PzTrCCv Qal 0 f e 8 i

) 0

0 81 c k ( 0 0 70 ! 64.5±0.3 Ma ) 104J 014 Ð 0 O c ( 80

47 8

1200 ) Ï 57 c

"S ( ) 4

M ½ e

½ Re H 6

½ ( )

½ PzTrCCl 40 a ½ (

½ *, 1

½ ( ! 46

½ 60 n

5 ( o

½ p ( ! Ï ½ Ï

½ ( 66

f 63.5±0.4 Ma 0 (

½ ( ½ 0 t

½ q Z Ï ½ (

½ (

J *, ( ( ( 1(52.0±1(.1 Ma ( 1 Ò lTrSc e !

17 ( 0 Vancouver ½

½ ( ( ( Z 62 ( A. L 0 . S. ! 0 ( U ! ( ( ( *, ( C 41 ( ( ( ( A ( 0 0 eJTcs

(( ( 45 r e

0 lTrS? 58 ( e

0 PzTrCClw k B ( ( VICTORIA

8 lTrSc

Ï ( ( ( ( Ï \

Ï ( ( Ï 28

4 lTrSpp (33 (40 ( ( ( Ö ( ( Ï

S Ï

6 PzTrCClw 3 ( ( ( ( ( lTrSc

½ i

½ ( (

½ F (

46 ½ x a 40 ½

45 u !

½ l

89 ½ PzTrCClw t 54

½ JIs

½ 73 t 84 65 ½ )

3 )

½ Ï ) ) !

½ e

½ !

½ ) )

½ 60 e

½ 0

) )

0 7 25

½ n

)

6 ) )

40 )

1 7 ! M 0

) 56 110 ) 7 ) i l p ! ) e f 35

eJTl !

q Dease )

C Ï )

r e J

1 e )

k Ï L ) Lake

5 Ï 66 !P

0 lTrSc

)

eJTcg lTrSc )

0 ) Previous Mapping in the Region

½ !P

½ )

½ 25

½ 37

½ )

A ) JIs

½ 40 Ï 48 )

½ Ï

½ ) ) ½ ½ A Ï ½ ½ lTrSc 132°W 130°W 128°W Ð

½ !

½ )

lTrSpp 55 ! ! 52 61 ! 60 65 85 )JIs

25 35

24 ! ! 50

lTrSpp Ï ! 56

! B 0

65 1 ½

½ 30 74 ½

½ ½

½ 0

½ ½

½ Ï 0 ½ ½ 8 ½

½ Ï 55 ! lTrScg

rt 3 27 po 16 25 eJTcs ir 45 A

48 1

Ï 90 A 1

6 eJTcg 3 eJTcg 2

0 75

½ 0

Ï ½

½ 63

½ F Dease

E E E ½ E E E E E 58°25'N

58°25'N ½

½ !P

½ *,

½ F 3

½ Lake ½

Â 3 40 *, ½

½ ½ ½ ½ ½ ½ ½ 3 3 Ï

! Golden

34 #* #* Major mineral deposits

40 Bear Gnat 34 Ð #*

50 6 lTrScg

Ï Pass 0 ! r Kutcho

0 Parks

0 #*

54 8 e

26 Ö

5 Ï 60 75 70 Creek

1 0 v

½ 58°N

½ 0

½ 3 i

8 ½ 1

½ 1

0 ½ This study ½

0 ½

½ R

48 ½

½ 25

½ 46 ½ ½

½ ½ Ï Telegraph ½ ½ !

! a !P 58°N 19 60 q l Previous Mapping

! Ö l Creek

23 lTrScg i

Ï 20 z !P Iskut Moynihan and Logan, 2012

lTrS ! n

! 21 a

35 ! 53 20 ! T

½ 67 Red

½ !

½ van Straaten et al., 2012

½ #*

½ Ma ½ 80 179.5±1.8

½ Ar #* GJ Chris ½

½ lTrSpx *, 0

½ 0 ½ 2

½ ½ 1 Anderson, 1983 ½ ½ ½ ½ 35 22 ! !

32 40 Ash et al., 1997 ! 45

20 ! ! ! #* Schaft

lTrSpx Ï

eJTcg ! Creek Brown et al., 1996

½ 37

lTrS ½ ½

½ B ½

½ 30

½ 40

½ d l e ! Ï Evenchick and Thorkelson, 2005

½ i

½ h C ½ c r e

½ g u s e k 75 87 86 Galore

u 17 ! #* A ! ! Creek ! Gabrielse, 1998 30 Read, 1983, 1984

8 37 0

0 65

½ 0 Qal Read and Psutka, 1990

½ 72 Ï 0 ½ 8

½ 132°W 130°W 128°W ½ ½ ½ Ï

MPlTv ½ ½ !P

#* #*

½ Qal Note: Outcrops are shown with a darker shade

½ 0

13 ½ 0 ½

0 ½

½ 0

½ 38 0

½ 7 MPlTv ½ #*

½ 0 ½ PLEISTOCENE AND RECENT ! 0 0 ½ ½ ½ 7

35 4 ! Unconsolidated glacial, lacustrian, alluvial and colluvial material. 6 Qal 65 lTrSpp Ï

Ò 20 MIOCENE TO PLEISTOCENE

0 Ï 30

½ Tuya Formation

0 ½

½ Ï

½ Alkali olivine basalt; grey to brown coloured, columnar-jointed. Yellowish green, mm-size phenocrysts of olivine and vitreous plagioclase ! 7 ½

½ ½

4 ½ ½ MPlTv ½ 75 ½ in a fine grained groundmass.

Û 30

47 42 ! ! 7Ï 8 !

66 38

Ï ! F EOCENE

Qal 65 44 75 !

*, 30 1 Tanzilla Canyon Formation 3 35 ! lTrSvs !

45 55 ! 0

62 ! 0

! 40 Poorly consolidated conglomerate, sandstone and mudstone; marl and lenses of high-volatile B bituminous coal.

½ ETCcg

T ½ 36 ½

½ q

½ !

½ ! 27 lTrScg ½

u ½

½ 10 MJHgd 40 ½ #

½ ½ ½ 34

y ½ ! PALEOCENE MPlTv a ! !

lTrSpp I 1200 20 Snow Peak pluton

R t s q ! 104J 013 65 30 ! i 70 ! i l "S Biotite-K-feldspar plagioclase monzonite to syenite; pink weathering, equigranular to porphyritic Laser ablation U-Pb zircon l i lTrScg q lTrSvs 35 PaSPgd

v t u 60 70 Ï 46 crystallization age of 63.5±0.4 Ma; Re-Os molybdenite age for mineralization of 64.5±0.3 Ma.

A lTrSvs

C ½

½ 900

r ½

½ ½

½ ½ ½ ½ LATE JURASSIC

r 166.5±0.7 Ma ½ ½ ½

½ ½

½ e ½ ½ ½ MJHsy 75 ½ ½ e Dikes and sills of quartz-hornblende-plagioclase porphyry (QFP); cross cut folded and foliated sedimentary rocks of the Takwahoni 70 *,Z Ï lTrScg LJqfp k q Formation, the King Salmon Fault and mafic volcanic rocks of Cache Creek Terrane. Laser ablation U-Pb zircon crystallization age of 212.2±1.8 Ma TrJgb *,Ar 152.0±1.1 Ma.

58°20'N E E E E lTrScg E lTrSpp E E E 58°20'N

½ lTrSmv

½ STIKINE TERRANE

½ 1

½ ½ ½

½ 1

½ ½ ½

½ ½ 0 ½

½ 0 ½ ½ ½ ½ MIDDLE JURASSIC

½ 3 ½ 60 Hluey Lake pluton 1 C 10 y r 0 e e e Biotite-K-feldspar-plagioclase monzonite to syenite; pink weathering, equigranular to porphyritic. Laser ablation U-Pb zircon u k MJHsy l crystallization age of 166.5±0.7 Ma and an incongruous older Ar-Ar biotite cooling age of 212.2±1.8 Ma. H 78

½ 2 Biotite-hornblende granodiorite; medium grained, equigranular to weakly foliated at eastern margin.

½ Ï ½

½ 0 lTrSpp

½ MJHgd

½ lTrSpp lTrSpp

0 ½

½ ½

½ ½ ½ ½ ½ ½ ½ 54 ! Pallen Creek pluton 1 Ð 0 F lTrSvs 80 0 Biotite-hornblende quartz monzonite to monzodiorite; equigranular to locally K-feldspar megacrystic. Laser ablation U-Pb zircon

*, 0 MJPm

40 H l u e y L a k e s crystallization age of 172.2±1.0 Ma. ! ! lTrSvs

32 34

q 63

! 30 EARLY JURASSIC

60 ½

½ A 30

½ ! f

½ 75

½ 39

½ q lTrSvs 32

½ !

½ Takwahoni Formation

½ Ð

½ ½ 9 ½

½ 00 r 45

½ ½ ½ ½ ½ ½ e ½ ½ lTrSw ½

½ ! Undivided sandstone, siltstone, mudstone, greywacke and conglomerate; dark grey to orange weathering, calcareous matrix.

v 1300 80 eJTcs

i 70 q 40 15 55 48 Ï ! 88 ! R TrJgd eJTl Limestone, sandy limestone. The mapped occurrence of this unit is too small to be visible at this scale. The occurrence is denoted by lTrS a F lTrSw outcrop location (x). l TrJgb *,

i l 00

n z lTrSw 12 80 Basal unit of coarse polylithic conglomerate, coarse sandstone and lesser siltstone.

! eJTcg

½ a 85 Ï

½ 104J 036 ½

½ ½ ½ ½ ½ T !

½ 80 TRIASSIC TO JURASSIC lTrSw lTrSw lTrSw White weathering, equigranular to porphyritic hornblende-plagioclase monzodiorite to granodiorite; acicular 1-8 mm hornblende Ï 0 TrJgd 0 1 TrJgd crystals±biotite in a fine grained feldspar matrix. 75 1 v T r Pyroxenite, hornblende gabbro, diorite and monzodiorite intrusive complex; high magnetite content of intrusions is reflected by high

T TrJgb

m 32 ! ½ magnetic susceptibility and corresponding high aeromagnetic signature. ½ ½ 0 45 0 ! 0 0 2 Ï 0 1

1 70 LATE TRIASSIC 3 60

70 0 lTrSvs

Ï B Ï Stuhini Group

1 ½ ½ ½ ½ 35 ½ Undivided coherent volcanic flows, clastic and sedimentary rocks. mTrTv S i t s a lTrS

0 0 L a k e 6 ! Mafic volcanic-dominated polylithic conglomerate, sandstone and greywacke; massive, rarely bedded, weathers orange and includes ! mTrTv lTrScg 172.2±1.0 Ma 1 lTrSpp 3 ! rare augite phyric basalt flows. ! 0 0 0

0 Z 0 0 ! Ï

3 *, 0 Augite±plagioclase phyric basalt; primarily thick monomict breccias, massive coherent flows and rare pillowed forms, 4-10 mm euhedral

1 ( 67 ! lTrSpx

Qal 0 6 black augite phenocysts in a pale green finer grained groundmass. ½ ½ ½ ½ ! ! (

MPlTv 4 TrJgb !

6 Latite, K-feldspar phyric trachyte, vesicular pyroxene basalt and minor volcanic sandstone; maroon to purple, friable.

ePSl 40 ( 48

Ï lTrSw lTrSmv ePSv % 40 Ï ! ! ( 15 1 0 6 Plagioclase±augite phyric basalt flows; green, grey and massive, 2-8 mm white plagioclase phenocrysts, often glomeroporphyritic in a 0 Qal T h i r t y M i l e 0 ! 0 30 0 lTrSpp ( 0 L a k e fine grained green groundmass. ! MPlTv lTrSw 6

4 ( ! 0

6 ! 15 0 Well-bedded, volcanic sandstone, siliceous siltstone and subordinate conglomerate; pale green, grey and orange, contains Upper 3

! ! lTrSvs ! 1

700 ( 12 ! Triassic bivalves and conodonts (M. Orchard pers comm., 2012).

60 14 MPlTv Ï

! ePSs !

( ! ! Z

0 Z ! 74 ! MJPm Volcanic clast-dominated conglomerate; contains horizons with limestone, chert and siltstone clasts, chaotic, massive to weakly bedded

0 60 ! lTrSw

( 4 40 Ï 1 TrJgd and internally graded.

I 3 F ! 30

48 *, MPlTv

67 ! ePSs ePSl EARLY-MIDDLE TRIASSIC !

! 3! 5

68 50 Î B Ï TrJgd Tsaybahe 'group' Ï 65 !

I ! B

! Coarse augite±plagioclase phyric basalt breccias and flows; orange to grey-green weathering.

28 TrJgd mTrTv !

F A

6 !

*, 34 85

ETCcg ! ! !

e! mTrTa A ! 16 0 Well-bedded, siliceous siltstone, argillite and limestone. Correlative rocks south of map area contain Middle and Early Triassic 104J 044 54 % 73 0 emTrTa 7

1 conodonts (Read, 1984). 28 50 9 64 ! "S E E 15' 400000 130°40'W 130°35'W 410000 30' 130°25'W 420000 130°20'W 15' 430000 130°10'W 130°5'W 440000 PERMIAN Stikine Assemblage Limestone; cream to grey coloured, well-bedded and interlayered with irregular black and grey chert nodules and layers. ePSl

Siliceous siltstone; green and buff coloured, interlayered and gradational into grey and maroon chert. ePSs

Plagioclase phyric lapilli tuff and breccia; penetratively foliated, maroon and green, carbonate altered. ePSv

Station Distribution with Geological Line Features QUEST-Northwest Total Field Magnetics (Aeroquest Airborne, 2012) with Geological Line Features and Altered/Mineralized Rock Sample Locations CACHE CREEK TERRANE EARLY JURASSIC 400000 410000 420000 430000 440000 400000 410000 420000 430000 440000 Inklin Formation ( ) ) ) ( ) ) ) ) ) ) ) ) ( ) ) ) ) ) Phyllite, phyllitic greywacke, siltstone with minor limestone and conglomerate; grey-green and calcareous. Possibly lateral fine grained ) ( ) ) ) ) ) ) ) JIs ) ) ) (( ) ) ) (( equivalent to coarser Takwahoni Formation overlying Stikine Terrane. ) ) ) ) ( ) ) ) ) ( ! ) ) ) ) ) ) ) ( ( ) ) ) ( ( LATE TRIASSIC Sinwa Formation ( ( ( ( ! Marble; grey, white and massive, forms structureless isolated exposures, locally foliated and rarely fossiliferous. Typically a light brown lTrSc amorphous rock cut by a dense stockwork of white calcite veins. ( ( ( ( ( (

7 7 MISSISSIPPIAN TO TRIASSIC ( ( ( ( JLO-12-105 ( ( ( ( Cache Creek Complex ( ( ( ( PzTrCCl Marble; white, grey and black, medium bedded; thinly foliated, locally interlayered with yellowish chert and tuffaceous beds. ) ) ) ) ( ) ( ) ) Meta-basalt; dark green, aphyric to fine pyroxene porphyry, pervasively fractured and penetratively foliated; metamorphic assemblage ) 0 ( 0 ( 0 ( ) 0 ( ) PzTrCCv 0 0 includes epidote, chlorite, calcite and pyrite. 0 ( ) 0 ( ) 8 ) 8 )

( 4 ( ( 4 ( ( Peridotite; dun-weathering, variably serpentinized chrome spinel-bearing; a probable serpentinized dunite(?) at the southern margin is ( 6 ( ( 6 ( ( 0 0 ( ( ( ( ( ( ( ( ( ( PzTrCCum 0 0 ( ( ( ( ( ( ( ( ( ( JL(O-2(9-296-3 thoroughly serpentinized and highly magnetic. 0 0 ( ( ( ( 0 0 ( ( ( (

8 ( 8 ( ( ( ( ( ( ( ( ( ( ( (

( 4 4 ( ( Listwanite altered ultramafic rocks comprised of quartz-talc-carbonate-chrome mica and locally pyrite. The unit crops out along trace of

6 (

6 ( ) ) JLO-8-65 ) )

) ) ) ) King Salmon Fault. For those mapped occurrences of this unit that are too small to be visible at this scale, the occurrences are denoted 7

7 ) )

)

) Dease PzTrCClw

) ) )

) by outcrop location (x).

) ) ) ) Dease Lake Lake ) ) )

) ) ) ) !P ) ) ) !P ) ) Populated place (unclassified) ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! P

MinFile (labelled by MinFile number): Prospect, Showing, Anomaly ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! S ! E

Altered / mineralized rock samples ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

Sample: fossil, isotopic dating method (U-Pb, Ar-Ar, Re-Os) labelled by preliminary date ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! *,F *,Z *,Ar *,Re Outcrop location ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

Bedding: tops indicated, inclined, vertical, horizontal ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 6 ! % Î

Fabric: slaty cleavage or schistosity (inclined, vertical, second phase inclined, second phase vertical) ! ! ! ! ! ! ! ! ! ! ! ! Ï Ò Ð Ö

! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ø Fold axis: first phase, second phase Ö

Lineation: bedding/cleavage intersection, stretching lineation ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! F

Fabric: trachytic flow, brittle fracture/joint ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! qè qf Brittle shear: inclined, vertical ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! #

Dike: inclined, vertical ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! A B 0 0 0 0 0 0 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Â 0 0 Vein: inclined, vertical 7 7 3 3 4 4

DMO-6-49 6 6 0 0 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 0 0 Geological contact: defined, approximate, inferred 0 0 0 0 7 7 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 4 4 Inferred quaternary cover contact 6 6

Unconformity: defined, approximate, inferred ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ( (

DMO-33-284 JLO-28-287 Fault: defined, approximate, inferred ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

JLO-28-285 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ( ( ( ( ) )

Thrust fault: defined, approximate, inferred Axial trace of overturned regional fold: antiform, synform ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! I Z DMO-35-309

DMO-35-309Dup Contact metamorphic isograd: biotite in, cordierite in ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 7 7

Limit of mapping ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

Roads: Highway 37, Telegraph Creek, Hluey Lake ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !(37 JLO-24-249 Elevation contours (20 m intervals): Major, Minor ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! JLO-24-244-2

! ! 0 0 0 Field stations (n = 955) 0 ! ! ! ! 0 0 0 2 0 6 6

* Map area = 1,275 km 4 ( ! 4 ( ! 6 6

0 Sample location (labelled by Sample Number) 0 0 0 0 0 ( ( 0 0

6 !

6 ! 4

4 ( ! ( !

6 56824.1 57025.4 57467.2 6

! !

! 1:100,000 ! 1:100,000 ( 56493.1 56931.3 57187.8 > 58624.5 ( BC Geological Survey Open File 2012-04 !LDI-19-164a 0 1 2 4 km ! 0 1 2 4 km Nanoteslas LDI-19-164b Geoscience BC Map 2012-08-1

! !

400000 410000 420000 430000 440000 400000 410000 420000 430000 440000 Dease Lake - References Altered / Mineralized Rock Samples (ICP-MS) Aeroquest Airborne (2012): Report on a helicopter-borne magnetic survey (Aeroquest job # 11-046) for Geoscience BC; Geoscience BC Report 2012-2, 11 pages. Data Sources SampleNumber UTM ZONE10 Unit LabNo Ag As Au Ba Bi Cd Ce Little Tuya River Geology Anderson, R.G. (1983): Geology of the Hotailuh batholith and surrounding volcanic and sedimentary rocks, north-central British Columbia; unpublished Ph.D. thesis, Carleton University, 669 pages. MinFile data Ash, C.H., Macdonald, R.W.J., Stinson, P.K., Fraser, T.M., Nelson, K.J., Arden, K.M. and Lefebure, D.V. (1997): Geology and mineral occurrences of the Tatogga Lake area; B.C. Ministry of Energy, Mines and Petroleum Resources, Open File 1997-3. Easting Northing Detection 0.1 1 2 1 0.1 0.1 1 MINFILE (2012): MINFILE BC mineral deposits database; B.C. Ministry of Energy Bamber, E. W. (2011): Report on two collections of upper Paleozoic invertebrate fossils from the Dease Lake area, northwestern British Columbia, NTS 104J-7, 104J-8; Geological Survey of Canada, Paleontological Report 01-EWB-2011, 3 pages. Units PPM PPM PPB PPM PPM PPM PPM and Mines, URL [March 2012] NTS Sheets 104J/08, 07E Brown, D.A., Gunning, M.H. and Greig, C.J. (1996): The Stikine Project: Geology of western Telegraph Creek map area, northwestern British Columbia; B.C. Ministry of Energy, Mines and Petroleum Resources, Bulletin 95, 175 pages. DMO-33-284 427351 6467996 lTrSvs 62159 0.3 81 10 18 0.3 <0.1 7 Evenchick, C. A. and Thorkelson, D.J. (2005): Geology of the Spatsizi River map area, north-central British Columbia; Geological Survey of Canada, Bulletin 577, 276 pages. Aeromagnetic data DMO-35-309 430125 6466026 lTrSmv 62160 <0.1 7 7 338 0.5 <0.1 30 Gabrielse, H., Monger, J.W.H., Leaming, S.F., Anderson, R.G. and Tipper, H.W. (1980): Geology of Dease Lake (104J) map-area, northwestern British Columbia; Geological Survey of Canada, Open File 707. Aeroquest Airborne (2012): Report on a Helicopter-Borne Magnetic Survey James M. Logan, David P. Moynihan, Larry J. Diakow lTrSmv Gabrielse, H. (1998): Geology of Cry Lake and Dease Lake Map areas, north-central British Columbia; Geological Survey of Canada, Bulletin 504, 147 pages. DMO-35-309Dup 430125 6466026 62155 <0.1 9 9 192 0.6 <0.1 28 (Aeroquest Job #11-046) for Geoscience BC; Geoscience BC, Report 2012-2, 11 p. and Bram I. van Straaten Iverson, O., Mahoney, B. and Logan, J.M. (2012): Dease Lake Geoscience Project, Part IV: Tsaybahe Group – Lithological and geochemical characterization of Middle Triassic volcanism in the Stikine arch, British Columbia; B.C. Ministry of Energy and Mines, Geological Fieldwork 2011, Paper 2012-1, pages 17-22. DMO-6-49 415975 6470269 lTrS 62157 0.1 26 <2 20 <0.1 0.1 5 URL [January 2012] Kasper, B.J. (1991): 1991 Geological and geochemical report on the Huey and Duey claims; B.C. Ministry of Energy, Mines and Petroleum Resources, Assessment Report 21,707. PzTrCClw JLO-12-105 423171 6482300 62146 0.2 64 4 87 <0.1 0.2 <1 Topographic data Kerr, F.A. (1926): Dease Lake area, Cassiar district British Columbia; Geological Survey of Canada, Map 2104. JLO-24-244-2 417876 6463877 lTrSpp 62150 <0.1 3 7 566 <0.1 <0.1 11 1 : 50,000 Logan, J.M., Diakow, L.J., van Straaten, B.I., Moynihan, D.P. and Iverson, O. (2012): QUEST-Northwest mapping: BC Geological Survey Dease Lake Geoscience Project, northern British Columbia (NTS 104I, J); in Geoscience BC Summary of Activities 2011, Geoscience BC, Report 2012-1, p. 5–14. BC TRIM (2006): British Columbia Terrain Resource Information Mapping (TRIM) JLO-24-249 417295 6464315 lTrSw 62151 <0.1 7 <2 170 <0.1 0.2 14 Logan, J.M., Moynihan, D.P. and Diakow, L.J. (2012): Dease Lake Geoscience Project, Part I: Geology and mineralization of the Dease Lake (104J/08) and east- half of the Little Tuya River (104J/07E) map sheets, northern British Columbia; B.C. Ministry of Energy and Mines, Geological Fieldwork 2011, Paper 2012-1, pages 23-44. Digitial Map Products; B.C. Ministry of Forests, Lands and Natural Resource 0 1 2 4 km Moynihan, D.P. and Logan, J.M. (2012): Dease Lake Geoscience Project, Part III: Age, emplacement and mineralization of the Snow Peak pluton (NTS 104J/08); B.C. Ministry of Energy and Mines, Geological Fieldwork 2011, Paper 2012-1, pages 69-74. JLO-28-285 430650 6467484 MJHsy 62152 <0.1 10 21 1490 0.1 0.2 84 Operations, Crown Registry and Geographic Base Branch. URL [May 2011] Poulton, T.P. (2011): Report on three collections of Triassic and Jurassic samples collected in 2011 by Jim Logan, Larry Diakow, and David Moynihan (BCGS) in Dease Lake map area, northern British Columbia (NTS 104J/08); Geological Survey of Canada, Paleontological Report TJ1-2011-TTP, 3 pages. JLO-28-287 430492 6467572 MJHgd 62153 <0.1 13 4 199 0.1 0.1 65 Read, P.B. (1983): Geology, Classy Creek (10J/2E) and Stikine Canyon (104J/1W), British Columbia; Geological Survey of Canada, Open File 940. JLO-29-296-3 431174 6479608 PzTrCClw 62154 <0.1 108 <2 47 <0.1 0.1 <1 Massey, N.W.D, MacIntyre, D.G., Desjardins, P.J. and Cooney, R.T. (2005): Digital Universal Transverse Mercator Projection, Zone 9 Read, P.B. (1984): Geology Klastline River (104G/16E), Ealue Lake (104H/13W), Cake Hill (104I/4W) and Stikine Canyon (104J/1E), British Columbia; Geological Survey of Canada, Open File 1080. Geology Map of British Columbia: Whole Province; B.C. Ministry of Energy and Horizontal Datum: North American Datum 1983 TrJgd Read, P.B. and Psutka, J.F. (1990): Geology of Ealue Lake east-half (104H/13E) and Cullivan Creek (104H/14) map areas, British Columbia; Geological Survey of Canada, Open File 2241. JLO32-319 451832 6457090 62156 0.6 5 41 510 0.1 0.2 16 Mines, Geofile 2005-1, URL April 2012 Ryan, B. (1991): Geology and potential coal and coalbed methane resource of the Tuya River coal basin (104J/2, 7); B.C. Ministry of Energy, Mines and Petroleum Resources, Paper 1991-1, pages 419 - 432. JLO50-501 (BLK) - - silica blank 62158 <0.1 <1 <2 3 0.1 <0.1 <1 < http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/GeoFiles/ Pages/2005-1.aspx> [November 2007] Swenson, M. (2006): Geological Report on the Mac property; B.C. Ministry of Energy, Mines and Petroleum Resources, Assessment Report 28309. JLO-8-65 436103 6478873 PzTrCClw 62145 <0.1 82 <2 7 <0.1 <0.1 <1 Suggested Reference: van Straaten, B.I., Logan, J.M. and Diakow, L.J. (2012): Dease Lake Geoscience Project, Part II: Preliminary report on the Mesozoic magmatic history and metallogeny of the Hotailuh batholith and surrounding volcanic and sedimentary rocks; B.C. Ministry of Energy and Mines, Geological Fieldwork 2011, Paper 2012-1, pages 99-120. LDI-19-164a 424421 6458324 emTrTa 62147 <0.1 31 21 64 0.2 0.2 70 Acknowledgments Logan, J.M., Moynihan, D.P., Diakow, L.J. and van Straaten, B. (2012): Dease Lake - Little Tuya River LDI-19-164b 424421 6458324 emTrTa 62148 <0.1 3 14 141 0.2 0.3 80 Geology (NTS 104J/08, 07E); BC Ministry of Energy and Mines, Open File 2012-04 and Geoscience MJPm Cartography by James M. Logan from British Columbia Geological Survey and Fion Ma from BC Map 2012-08-1, 1:50,000 scale. OIV-3-38 428828 6454076 62149 <0.1 2 3 308 <0.1 0.2 10 Geoscience BC