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M81925 - First Vertical Derivative of the Terrain ... · de signed filte rs to avoid bia sing ... -...

Date post: 27-Sep-2018
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F I R S T V E R T I C A L D E R I V A T I V E E ö t v ö s L E G E N D I n t r o d u c t i o n O n t a r i o G e o l o g i c a l S u r v e y . T h i s m a p i s p u b l i s h e d w i t h t h e p e r m i s s i o n o f t h e D i r e c t o r , © Q u e e n ' s P r i n t e r f o r O n t a r i o , 2 0 0 4 . I s s u e d 2 0 0 4 . I n f o r m a t i o n f r o m t h i s p u b l i c a t i o n m a y b e q u o t e d i f c r e d i t i s g i v e n . I t i s r e c o m m e n d e d t h a t r e f e r e n c e b e m a d e i n t h e f o l l o w i n g f o r m : O n t a r i o G e o l o g i c a l S u r v e y 2 0 0 4 . A i r b o r n e g r a v i t y s u r v e y , B o u g u e r g r a v i t y , n o r t h e a s t T i m m i n s a r e a : H i g h w a y 1 0 1 c o r r i d o r ; O n t a r i o G e o l o g i c a l S u r v e y , s i n ² ) / s q r t ( 1 - 0 . 0 0 6 6 9 4 3 7 9 9 9 0 1 3 × s i n ² ) , w h e r e i s t h e t h e l a t i t u d e , a n d h i s t h e a l t i t u d e o f t h e p l a n e a b o v e t h e g r a v i t y d a t a t o c a l c u l a t e t h e B o u g u e r a n o m a l y d a t a : T h e f o l l o w i n g s t a n d a r d c o r r e c t i o n s w e r e a p p l i e d t o t h e T h e c a l c u l a t e d g r a v i t y i s c o r r e c t e d f o r t h e E ö t v ö s e f f e c t a n d t h e a i r c r a f t i n f l i g h t b y e x t r e m e l y a c c u r a t e G P S m e a s u r e m e n t . e n v i r o n m e n t . T h i s i s a c h i e v e d b y m o d e l l i n g t h e m o v e m e n t s o f p r o c e s s i n g m u s t e x t r a c t g r a v i t y d a t a f r o m t h i s v e r y d y n a m i c a i r c r a f t c a n r e a c h 0 . 1 g , e q u i v a l e n t t o 1 0 0 0 0 0 m G a l . D a t a i n e r t i a l a c c e l e r a t i o n s . I n s u r v e y f l y i n g , a c c e l e r a t i o n s i n a n b y s u b t r a c t i n g t h e G P S d e r i v e d a i r c r a f t a c c e l e r a t i o n s f r o m t h e d e s i g n e d f i l t e r s t o a v o i d b i a s i n g t h e d a t a . G r a v i t y i s c a l c u l a t e d a n d d e c i m a t e d t o m a t c h G P S m e a s u r e m e n t s u s i n g s p e c i a l l y G r a v i t y d a t a a r e r e c o r d e d a t 1 2 8 H z . A c c e l e r a t i o n s a r e f i l t e r e d G r a v i t y D a t a D E S C R I P T I V E N O T E S 6 k m 4 2 0 S c a l e 1 : 1 0 0 0 0 0 ( S o m e s y m b o l s m a y n o t a p p l y t o t h i s m a p ) O T H E R S Y M B O L S A d m i n i s t r a t i v e P o w e r l i n e M a i n r o a d S e c o n d a r y r o a d T r a i l D r a i n a g e R a i l r o a d b o u n d a r y d a t a a c q u i s i t i o n s y s t e m . r a d a r a l t i m e t e r , l a s e r a l t i m e t e r a n d a S a n d e r N a v D A S d i g i t a l T h e a i r c r a f t w e r e a l s o e q u i p p e d w i t h a G P S n a v i g a t i o n s y s t e m , G e o p h y s i c s ' A I R G r a v a i r b o r n e g r a v i t y s y s t e m . T h e s u r v e y w a s f l o w n u s i n g 2 a i r c r a f t e q u i p p e d w i t h S a n d e r R a d a r s a m p l e r a t e : 4 H z m i d p o i n t 2 . 7 k m f u l l w a v e l e n g t h G r i d c e l l s i z e : 2 0 0 m F a l s e n o r t h i n g : 0 m F a l s e e a s t i n g : 5 0 0 0 0 0 m C e n t r a l s c a l e f a c t o r : 0 . 9 9 9 6 C e n t r a l m e r i d i a n : 8 1 ° 0 0 ' W ( U T M z o n e 1 7 N ) D a t u m : N A D 8 3 P r o j e c t i o n : U n i v e r s a l T r a n s v e r s e M e r c a t o r B o u g u e r a n d t e r r a i n c o r r e c t i o n d e n s i t y : 2 . 6 7 g / c m ³ L a s e r a l t i m e t e r : O p t e c h A D M 4 l a s e r r a n g e f i n d e r D i g i t a l a c q u i s i t i o n s y s t e m : S a n d e r N a v D A S L a s e r s a m p l e r a t e : 1 0 0 H z 2 0 0 m A G L , c o n s t a n t h e i g h t ( T e s t S u r v e y ) A i r c r a f t a l t i t u d e : 2 0 0 m A G L , d r a p e d M a y 1 5 t o M a y 1 8 , 2 0 0 3 ( T e s t S u r v e y ) D a t e s f l o w n : D e c e m b e r 6 , 2 0 0 3 t o J a n u a r y 2 8 , 2 0 0 4 S U R V E Y S P E C I F I C A T I O N S G P S s a m p l e r a t e : 1 0 H z B A S E S T A T I O N G r a v i t y d a t a s p a t i a l f i l t e r : 0 % p a s s a t 2 k m , 1 0 0 % p a s s a t 4 k m , R a d a r a l t i m e t e r : T R T E R T 5 3 0 A G P S s a m p l e r a t e : 1 0 H z G P S r e c e i v e r : N o v a t e l M i l l e n n i u m , 1 2 c h a n n e l , d u a l f r e q u e n c y N A V I G A T I O N S Y S T E M G r a v i m e t e r s a m p l e r a t e : 1 2 8 H z G r a v i m e t e r s e n s i t i v i t y : 0 . 1 m G a l G r a v i m e t e r s e n s o r : S a n d e r G e o p h y s i c s ' A I R G r a v G R A V I M E T E R R e g i s t r a t i o n : C - G S G W a n d C - G S G U T y p e : C e s s n a G r a n d C a r a v a n 2 0 8 - B . A I R C R A F T S U R V E Y P A R A M E T E R S G P S r e c e i v e r : N o v a t e l M i l l e n n i u m , 1 2 c h a n n e l , d u a l f r e q u e n c y O v e r a l l p r o j e c t m a n a g e m e n t b y T i m m i n s E c o n o m i c D e v e l o p m e n t C o r p o r a t i o n . C o n t r a c t m a n a g e m e n t , p r o j e c t m a n a g e m e n t b y R o b e r t C a l h o u n , P r o j e c t M a n a g e r , D i s c o v e r A b i t i b i I n i t i a t i v e . D a t a a c q u i s i t i o n , c o m p i l a t i o n a n d m a p p r o d u c t i o n b y S a n d e r G e o p h y s i c s L i m i t e d , O t t a w a , O n t a r i o . T o e n a b l e t h e r a p i d d i s s e m i n a t i o n o f i n f o r m a t i o n , t h i s m a p h a s n o t r e c e i v e d a t e c h n i c a l e d i t . E v e r y p o s s i b l e e f f o r t h a s b e e n m a d e t o e n s u r e t h e a c c u r a c y o f t h e i n f o r m a t i o n p r e s e n t e d ; h o w e v e r , t h e O n t a r i o M i n i s t r y o f N o r t h e r n D e v e l o p m e n t a n d M i n e s d o e s n o t a s s u m e l i a b i l i t y f o r a n y e r r o r s t h a t m a y o c c u r . U s e r s c a n v e r i f y c r i t i c a l i n f o r m a t i o n f r o m t h e c o r r e s p o n d i n g d i g i t a l p r o f i l e a n d g r i d d e d d a t a d i s t r i b u t e d b y t h e O n t a r i o G e o l o g i c a l S u r v e y . C R E D I T S Q u a l i t y a s s u r a n c e a n d q u a l i t y c o n t r o l b y L a u r i e R e e d , L . E . R e e d G e o p h y s i c a l C o n s u l t a n t I n c . P R O C E S S I N G P A R A M E T E R S C O O R D I N A T E S Y S T E M p r e c i s e c o r r e c t i o n o f t h e e f f e c t s o f a i r c r a f t m o t i o n . s p a c e , i n d e p e n d e n t o f t h e m a n e u v e r s o f t h e a i r c r a f t , a l l o w i n g a c c e l e r o m e t e r s , w h i c h r e m a i n i n a f i x e d o r i e n t a t i o n i n i n e r t i a l t u n e d i n e r t i a l p l a t f o r m . T h i s p l a t f o r m s u p p o r t s 3 o r t h o g o n a l S a n d e r G e o p h y s i c s ' a i r b o r n e g r a v i m e t e r u s e s a S c h u l e r - A I R G r a v A i r b o r n e G r a v i t y S y s t e m F I R S T V E R T I C A L D E R I V A T I V E O F 5 E ö t v ö s 2 5 E ö t v ö s 1 0 0 E ö t v ö s P i p e l i n e h t t p : / / w w w . d i s c o v e r a b i t i b i . c o m / t e c h n i c a l - p r o j e c t s . h t m , r e p o r t . D i s c o v e r A b i t i b i w e b s i t e : E l i e f f , S . H . P . 2 0 0 3 . A i r b o r n e g r a v i t y e v a l u a t i o n s u r v e y - p r o j e c t M a g n e t i c d e c l i n a t i o n i n 2 0 0 4 f o r t h e c e n t r e o f t h e m a p a r e a w a s 1 1 . 0 3 ° W . M a g n e t i c i n c l i n a t i o n i n 2 0 0 4 f o r t h e c e n t r e o f t h e m a p a r e a w a s 7 4 . 6 4 ° N . ( C a l c u l a t e d u s i n g t h e I n t e r n a t i o n a l S O U R C E S O F I N F O R M A T I O N B a s e m a p i n f o r m a t i o n d a t a d e r i v e d f r o m O n t a r i o L a n d I n f o r m a t i o n W a r e h o u s e , L a n d I n f o r m a t i o n O n t a r i o . t h e x ( n o r t h ) a n d y ( e a s t ) d i r e c t i o n s , r i s t h e E a r t h ' s r a d i u s a t o f t h e a i r c r a f t , v a n d v a r e t h e v e l o c i t i e s o f t h e a i r c r a f t i n 0 . 0 0 0 0 7 2 9 2 1 1 5 × c o s × v - v ² / ( r + h ) , w h e r e i s t h e l a t i t u d e E ö t v ö s c o r r e c t i o n = - v ² × c o s / ( ( r + h ) c o s ) - 2 × l a t i t u d e o f t h e a i r c r a f t . a i r c r a f t i n m e t r e s . F r e e a i r c o r r e c t i o n , g = - 0 . 3 0 8 6 h , w h e r e h i s h e i g h t o f t h e U n i v e r s a l G r a v i t y c o n s t a n t , i s d e n s i t y ( 2 . 6 7 g / c m ³ f o r t h i s B o u g u e r , g = 2 h = 0 . 0 9 6 2 7 8 h , w h e r e i s t h e C u r v a t u r e o f t h e e a r t h , g = 1 . 4 6 4 h - 0 . 3 5 3 3 h ² + 0 . 0 0 0 0 4 5 h ³ , p r o j e c t ) , h i s h e i g h t o f t h e g r o u n d b e l o w t h e a i r c r a f t i n m e t r e s . w h e r e h i s h e i g h t o f t h e g r o u n d i n k i l o m e t r e s . T e r r a i n , g , c o m p u t e d u s i n g a d i g i t a l t e r r a i n m o d e l d e r i v e d b y c o m b i n i n g t e r r a i n f r o m s e v e r a l s o u r c e s . W i t h i n t h e s u r v e y a r e a , t h e l i n e d a t a w e r e u s e d t o c a l c u l a t e t h e t o p o g r a p h y b y s u b t r a c t i n g t h e a l t i m e t e r d a t a f r o m t h e a l t i t u d e o f t h e a i r c r a f t a b o v e t h e m e a n s e a l e v e l . T e r r a i n d a t a f o r t h e a r e a o u t s i d e t h e s u r v e y b l o c k s w e r e d e r i v e d b y c o m b i n i n g 3 a r c s e c o n d C a n a d i a n D i g i t a l E l e v a t i o n D a t a a n d 3 0 a r c s e c o n d U S G S S t a t i c c o r r e c t i o n , g , b a s e d o n s t a t i c g r o u n d r e c o r d i n g s a n d r e p e a t l i n e s . L e v e l c o r r e c t i o n , g , b a s e d o n l i n e i n t e r s e c t i o n s . T h u s B o u g u e r a n o m a l y = G - g - g - g + g - g - g , w h e r e G i s t h e c a l c u l a t e d g r a v i t y a d j u s t e d f o r E ö t v ö s e f f e c t a n d n o r m a l g r a v i t y . a c c e s s e d J u l y 2 0 0 3 . F a i r h e a d , J . D . a n d O d e g a r d , M . E . 2 0 0 2 . A d v a n c e s i n g r a v i t y s u r v e y r e s o l u t i o n ; T h e L e a d i n g E d g e , v . 2 1 , n o . 1 , p . 3 6 . F e r g u s o n , S . 2 0 0 0 . E x p e r i e n c e s w i t h A I R G r a v : R e s u l t s f r o m a n e w a i r b o r n e g r a v i m e t e r ; I n t e r n a t i o n a l A s s o c i a t i o n o f G e o d e s y S y m p o s i a , v . 1 2 3 . S a n d e r , S . , L a v o i e , V . , P e i r c e , J . a n d C h a r t e r s , R . A . 2 0 0 3 . A d v a n t a g e s o f c l o s e l i n e s p a c i n g i n a i r b o r n e g r a v i m e t r i c s u r v e y s ; T h e L e a d i n g E d g e , v . 2 2 , n o . 2 , p . 1 3 6 . S a n d e r , S . , F e r g u s o n , S . , S a n d e r L . a n d L a v o i e V . 2 0 0 2 . M e a s u r e m e n t o f n o i s e o n a i r b o r n e g r a v i t y d a t a u s i n g e v e n a n d o d d g r i d s ; F i r s t B r e a k , v . 2 0 , n o . 8 . B r u t o n , A . M . 2 0 0 1 . A c o m p a r i s o n o f i n e r t i a l p l a t f o r m , d a m p e d 2 - a x i s p l a t f o r m a n d s t r a p d o w n a i r b o r n e g r a v i m e t r y ; I n t e r n a t i o n a l S y m p o s i u m o n K i n e m a t i c S y s t e m s i n G e o d e s y , G e o m a t i c s a n d N a v i g a t i o n ( K I S 2 0 0 1 - B a n f f , A l b e r t a ) , J u n e 2 0 0 1 . A r g y l e , M . , F e r g u s o n , S . , S a n d e r , L . a n d S a n d e r , S . 2 0 0 0 . A I R G r a v r e s u l t s : a c o m p a r i s o n o f a i r b o r n e g r a v i t y d a t a w i t h G S C t e s t s i t e d a t a ; T h e L e a d i n g E d g e , v . 1 9 , n o . 1 0 , p . 1 1 3 4 . B a s e m a p s a n d m a p s u r r o u n d s b y t h e M i n i s t r y o f N o r t h e r n D e v e l o p m e n t a n d M i n e s , S u d b u r y , O n t a r i o . T e s t S u r v e y ) a n d 1 0 0 0 m ( o t h e r a r e a s ) T r a v e r s e l i n e s p a c i n g : 5 0 0 m ( n o r t h e a s t T i m m i n s a r e a a n d F l y i n g s p e e d : 5 1 m / s a v e r a g e A i r c r a f t p o s i t i o n i n g : D i f f e r e n t i a l G P S 1 0 k m ( n o r t h e a s t T i m m i n s a r e a ) , a n d 2 0 k m ( o t h e r a r e a s ) T r a v e r s e l i n e d i r e c t i o n : a l o n g b e a r i n g 9 0 ° - 2 7 0 ° C o n t r o l l i n e d i r e c t i o n : a l o n g b e a r i n g 0 ° - 1 8 0 ° T o t a l l i n e k i l o m e t r e s : 1 6 1 3 2 l k m ( 1 4 2 9 6 l k m + 1 8 3 6 l k m T e s t S u r v e y ) n o r m a l g r a v i t y . T h e s a m p l e i n t e r v a l i s r e d u c e d t o 2 H z . G R S - 8 0 e l l i p s o i d . N o r m a l g r a v i t y = 9 . 7 8 0 3 2 6 7 7 1 4 × ( 1 + 0 . 0 0 1 9 3 1 8 5 1 3 8 6 3 9 × C o n t r o l l i n e s p a c i n g : 5 k m ( T e s t S u r v e y ) , D i s c o v e r A b i t i b i I n i t i a t i v e T h e D i s c o v e r A b i t i b i I n i t i a t i v e i s a r e g i o n a l , c l u s t e r e c o n o m i c d e v e l o p m e n t p r o j e c t b a s e d o n g e o s c i e n t i f i c i n v e s t i g a t i o n s o f t h e w e s t e r n A b i t i b i g r e e n s t o n e b e l t . T h e i n i t i a t i v e , c e n t r e d o n t h e K i r k l a n d L a k e a n d T i m m i n s m i n i n g c a m p s , w i l l c o m p l e t e 1 9 p r o j e c t s d e v e l o p e d a n d d i r e c t e d b y t h e l o c a l s t a k e h o l d e r s . F e d N o r , N o r t h e r n O n t a r i o H e r i t a g e F u n d C o r p o r a t i o n a n d p r i v a t e s e c t o r i n v e s t o r s h a v e p r o v i d e d t h e f u n d i n g f o r t h e I n i t i a t i v e D é c o u v r o n s l A b i t i b i L i n i t i a t i v e D é c o u v r o n s l A b i t i b i e s t u n p r o j e t d e d é v e l o p p e m e n t é c o n o m i q u e r é g i o n a l d a n s u n e g r a p p e d i n d u s t r i e s , p r o j e t f o n d é s u r d e s é t u d e s g é o s c i e n t i f i q u e s d e l a c e i n t u r e d e r o c h e s z o n e s m i n i è r e s d e K i r k l a n d L a k e e t d e T i m m i n s , m è n e r a à b i e n 1 9 p r o j e t s é l a b o r é s e t d i r i g é s p a r d e s i n t e r v e n a n t s l o c a u x . F e d N o r , l a S o c i é t é d e g e s t i o n d u F o n d s d u p a t r i m o i n e d u N o r d d e l O n t a r i o e t d e s i n v e s t i s s e u r s d u s e c t e u r p r i v é o n t f o u r n i l e s D i s c o v e r A b i t i b i D é c o u v r o n s l ' A b i t i b i A p r o j e c t o f i n n o v a t i o n , c o o p e r a t i o n a n d r e v i t a l i z a t i o n U n p r o j e t d ' i n n o v a t i o n , d e c o o p é r a t i o n e t d e r e n o u v e l l e m e n t D i s c o v e r A b i t i b i D é c o u v r o n s l ' A b i t i b i v e r t e s d e l A b i t i b i o c c i d e n t a l . C e t t e i n i t i a t i v e , c e n t r é e s u r l e s f o n d s d e c e t t e i n i t i a t i v e . x x y x y f a s b e c t s c l c f a s b e c t s c l c i n i t i a t i v e . f i r s t v e r t i c a l d e r i v a t i v e o f t h e t e r r a i n - c o r r e c t e d O F T H E B O U G U E R G R A V I T Y T H E B O U G U E R G R A V I T Y C O N T O U R S d i g i t a l t e r r a i n d a t a . N T S R e f e r e n c e s : 3 2 D / 5 , 1 2 ; 4 2 A / 6 , 7 , 8 , 9 , 1 0 , 1 1 T h e o r i g i n a l l y p r o p o s e d c o v e r a g e f o r t h e T i m m i n s a r e a p r o d u c e d s i g n i f i c a n t g a p s i n p a r t s o f t h e s u r v e y a r e a . W h i l e c a r r y i n g o u t t h e c o n t r a c t e d g e o p h y s i c a l s u r v e y s ( i n d i c a t e d b y t h e l i g h t p i n k a r e a ( s ) o n t h e l o c a t i o n m a p ) , S a n d e r G e o p h y s i c s c o n t i n u e d t h e i r f l i g h t l i n e s t h r o u g h t h e g a p s a n d , i n s o m e a r e a s , e x t e n d e d t h e l i n e s b e y o n d t h e o r i g i n a l l y p r o p o s e d b o u n d a r i e s ( s e e o r a n g e a r e a ( s ) o n t h e l o c a t i o n m a p ) . T h i s h a s p r o d u c e d A C K N O W L E D G M E N T a c o n t i n u o u s d a t a s t r e a m a n d a d d e d 2 2 8 1 l i n e - k i l o m e t r e s o f T h e f i n a l d a t a s e t f o r t h e g r a v i t y s u r v e y i n g i n t h e T i m m i n s K i r k l a n d L a k e r e g i o n a l s o i n c l u d e s a 1 8 3 6 l i n e - k i l o m e t r e t e s t s u r v e y c o m p l e t e d b y S a n d e r G e o p h y s i c s t h a t w a s f l o w n o v e r a l a r g e a r e a n o r t h a n d w e s t o f T i m m i n s . T h e s e a d d i t i o n a l , u n c o n t r a c t e d d a t a h a v e b e e n g r a c i o u s l y d o n a t e d b y S a n d e r G e o p h y s i c s . T h e d o n a t i o n h a s s e r v e d t o f u r t h e r e n h a n c e t h e D i s c o v e r A b i t i b i I n i t i a t i v e ( D A I ) a n d i s g r a t e f u l l y a c k n o w l e d g e d b y t h e T i m m i n s E c o n o m i c D e v e l o p m e n t C o r p o r a t i o n , t h e m a n a g e m e n t c o m m i t t e e o f D A I a n d t h e p r i v a t e s e c t o r p a r t n e r s . u n c o n t r a c t e d d a t a , t h u s r e s u l t i n g i n c o n s i d e r a b l e e n h a n c e m e n t o f t h e d a t a s e t . T e r r a i n - C o r r e c t e d B o u g u e r G r a v i t y M A P 8 1 9 2 5 F i r s t V e r t i c a l D e r i v a t i v e o f t h e A I R B O R N E G R A V I T Y S U R V E Y O n t a r i o G e o l o g i c a l S u r v e y H I G H W A Y 1 0 1 C O R R I D O R N O R T H E A S T T I M M I N S A R E A M a p 8 1 9 2 5 , s c a l e 1 : 1 0 0 0 0 0 . G e o m a g n e t i c R e f e r e n c e F i e l d . ) G r a v i t y d e p r e s s i o n - 1 1 9 . 1 - 5 9 . 2 - 4 6 . 4 - 3 9 . 4 - 3 4 . 1 - 3 0 . 3 - 2 7 . 6 - 2 5 . 6 - 2 3 . 8 - 2 2 . 3 - 2 0 . 9 - 1 9 . 7 - 1 8 . 4 - 1 7 . 3 - 1 6 . 2 - 1 5 . 0 - 1 3 . 9 - 1 2 . 8 - 1 1 . 6 - 1 0 . 4 - 9 . 3 - 8 . 1 - 6 . 9 - 5 . 8 - 4 . 6 - 3 . 5 - 2 . 4 - 1 . 3 - 0 . 1 1 . 1 2 . 3 3 . 6 4 . 9 6 . 2 7 . 5 8 . 9 1 0 . 2 1 1 . 6 1 2 . 9 1 4 . 1 1 5 . 4 1 6 . 6 1 7 . 8 1 8 . 9 2 0 . 2 2 1 . 5 2 2 . 9 2 4 . 3 2 5 . 8 2 7 . 4 2 9 . 1 3 0 . 9 3 2 . 9 3 5 . 1 3 7 . 5 4 0 . 2 4 4 . 1 6 8 . 2 T h a c k e r a y P r o v i n c i a l N a t u r e R e s e r v e 1 1 6 2 6 6 7 1 0 1 5 7 2 1 0 1 5 7 7 6 1 0 6 1 0 8 0 3 1 1 6 0 6 5 7 0 7 5 8 0 8 5 9 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 5 5 6 0 6 5 7 0 7 5 8 0 8 5 9 0 9 5 6 0 6 5 7 0 7 5 8 0 8 5 9 0 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 5 5 6 0 6 5 7 0 7 5 8 0 8 5 9 0 9 5 5 0 0 0 0 0 m 6 0 0 0 0 0 m 6 0 0 0 0 0 m 5 0 0 0 0 0 m 6 0 5 0 0 0 m 5 3 5 5 0 0 0 m 4 9 5 0 0 0 m 5 3 5 5 0 0 0 m 4 9 5 0 0 0 m 5 3 9 5 0 0 0 m 6 0 5 0 0 0 m 5 3 9 5 0 0 0 m A n t h o n y B u r n t H i l l T h e C a n y o n C e n t r e H i l l C o n n a u g h t D u g w a l G h o s t R a n g e G u i b o r d H i l l H o l t y r e K e l s o M o u n t K e m p i s L a w s o n H i l l M a t h e s o n M c C o o l H i l l R a m o r e S h i l l i n g t o n V a l G a g n e V i m y R i d g e W a r d e n H i l l W a t a b e a g W a v e l l M c I n t o s h S p r i n g s M o n t e i t h F i e l d i n g B l a c k I s l a n d B u r n t I s l a n d s D o m i n i o n I s l a n d M o u n t G o l d s m i t h I r o q u o i s P o i n t L i g h t n i n g P o i n t P o p l a r I s l a n d M o u n t S m o l l e t t I s l a n d I s l a n d I s l a n d C i n d y M c L e o d M o o s e P o p l a r G r a s s y P o i n t P o i n t F r e d e r i c k H o u s e L a k e P r o v i n c i a l N a t u r e R e s e r v e I s l a n d H a n d N i g h t H a w k C e n t r e N o r t h P e n i n s u l a E a s t P e n i n s u l a K e t t l e L a k e s P r o v i n c i a l P a r k S h a l l o w R i v e r P r o v i n c i a l N a t u r e R e s e r v e A b i t i b i - d e - T r o y e s P r o v i n c i a l P a r k D e f i a n c e P e a k M o u n t S t r i n g e r L a v a f l o w M o u n t a i n D e n t I s l a n d H o y l e P a r t r i d g e P o i n t W e l s h W i n g s H i l l ' s L a n d i n g O n a g o n M c D o u g a l P o i n t P a m o u r M c C A R T T O W N S H I P C A L V E R T T O W N S H I P T E E F Y T O W N S H I P R I C K A R D T O W N S H I P K N O X T O W N S H I P M I L L I G A N T O W N S H I P W A R D E N T O W N S H I P C O U L S O N T O W N S H I P W I L K I E T O W N S H I P W A L K E R T O W N S H I P C L E R G U E T O W N S H I P D U N D O N A L D T O W N S H I P E V E L Y N T O W N S H I P G O W A N T O W N S H I P H O Y L E T O W N S H I P M A T H E S O N T O W N S H I P S T O C K T O W N S H I P T A Y L O R T O W N S H I P C A R R T O W N S H I P B E A T T Y T O W N S H I P M U N R O T O W N S H I P M c C O O L T O W N S H I P R A N D T O W N S H I P L A M P L U G H T O W N S H I P F R E C H E V I L L E T O W N S H I P S T O U G H T O N T O W N S H I P M A R R I O T T T O W N S H I P H O L L O W A Y T O W N S H I P H A R K E R T O W N S H I P G A R R I S O N T O W N S H I P G U I B O R D T O W N S H I P H I S L O P T O W N S H I P B O W M A N T O W N S H I P C U R R I E T O W N S H I P B O N D T O W N S H I P M A C K L E M T O W N S H I P C O D Y T O W N S H I P W H I T N E Y T O W N S H I P S H A W T O W N S H I P C A R M A N T O W N S H I P T H O M A S T O W N S H I P S H E R A T O N T O W N S H I P E G A N T O W N S H I P M c C A N N T O W N S H I P P L A Y F A I R T O W N S H I P C O O K T O W N S H I P B A R N E T T O W N S H I P T H A C K E R A Y T O W N S H I P E L L I O T T T O W N S H I P T A N N A H I L L T O W N S H I P D O K I S T O W N S H I P P O N T I A C T O W N S H I P B E N N E V I S T O W N S H I P C L I F F O R D T O W N S H I P B I S L E Y T O W N S H I P M E L B A T O W N S H I P B E N O I T T O W N S H I P B L A C K T O W N S H I P T O L S T O I T O W N S H I P M c E V A Y T O W N S H I P T I M M I N S T O W N S H I P B L A C K S T O C K T O W N S H I P L A N G M U I R T O W N S H I P E L D O R A D O T O W N S H I P T U L L Y T O W N S H I P L I T T L E T O W N S H I P F a l l s I r o q u o i s A i r p o r t K E R R S T O W N S H I P S t . 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R . 7 0 QUEBEC ONTARIO C a r l y l e L a k e C l a r i c e L a k e F r e d e r i c k H o u s e L a k e F r o o m e L a k e G r o v e L a k e H a r k e r L a k e L a w l a r L a k e N o r t h e a s t B a y T h a c k e r a y L a k e T r o l l o p e L a k e P e r r y L a k e M c D ia r m i d C r e e k M c I n t o s h L a k e S a l v e L a k e M o o s e L a k e P i n a w s L a k e L a k e A b i t i b i G h o s t R i v e r B a y L o w e r B a y M a k u a B a y O ' B r i e n B a y L a k e C h e s t I c e L a k e C l e a r w a t e r C a r m a n B a y W h i t e fi s h River M cLeo d Cr e ek B o t t l e y L a k e N i g h t H a w k L a k e L a k e L a k e L a k e L o n g B i g C l u b G i b s o n L a k e H e a r t W a r n e r L i p s e t t L a k e L a k e L a k e S h e r a t o n B r a d l e y L a k e L a k e W e l c o m e D a v i s L a k e S t o c k L a k e s R o u n d e l a y L a k e C h a p m a n L a k e R i c e L a k e L a k e L a k e R e i d G r a s s y L a k e L e v a c q u e L a k e L a k 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e i t h L a k e M a r y L a k e M a r t e n L a k e W e b s t e r L a k e D i c k s o n L a k e W ebs ter Cr eek C a m p b e l l L a k e L u l u L a k e G o u r l a y L a k e G a f L a k e L a u r a m a y L a k e M a l l o c h L a k e L a k e B l a c k w a t e r R a f L a k e K a s b a L a k e C r ee k Cr o te a u N i gh t Ha wk R iv er R a d i s s o n Cre ek R i ver Whit ef ish G r e e n o c k L a k e Kasb a C ree k Fr eder i c k F rede ri c k Pik e C h e s n e y B a y Garri s on Cr eek O k i k o d o s i k B a y R iv er B a r net C r e e k 4 8 ° 1 8 ' 1 1 " 4 8 ° 4 5 ' 1 1 " 7 9 ° 3 0 ' 1 3 " 4 8 ° 1 7 ' 3 7 " 4 8 ° 4 4 ' 3 6 " 7 9 ° 3 1 ' 0 1 " 8 1 ° 0 0 ' 0 0 " 5 0 ' 4 0 ' 3 0 ' 2 0 ' 1 0 ' 8 0 ° 0 0 ' 0 0 " 5 0 ' 4 0 ' 8 1 ° 0 8 ' 1 0 " 4 0 ' 3 0 ' 2 0 ' 8 1 ° 0 8 ' 0 5 " 8 1 ° 0 0 ' 0 0 " 5 0 ' 4 0 ' 3 0 ' 2 0 ' 1 0 ' 8 0 ° 0 0 ' 0 0 " 5 0 ' 4 0 ' 2 0 ' 3 0 ' 4 0 ' 6 6 1 0 1 1 1 2 1 1 6 7 1 0 1 O NR ONR 4 9 ° 4 9 ° 8 1 ° 8 1 ° 8 0 ° 8 0 ° L a r d e r L a k e W a t a b e a g L a k e N i g h t H a w k L a k e L a k e A b i ti bi A b i t i b i R i v e r R iver R i ve r B l a c k Ri v e r Wat a beag Riv er W hi tefi s h Rive r H o use Fr e d eri c k L a r d e r L a k e H o l t y r e R a m o r e M a t h e s o n B l a c k C r e e k A l b e r t M o n t e i t h S h i l l i n g t o n C o n n a u g h t H o y l e P o r q u i s J u n c t i o n T w i n F a l l s P o t t e r A r p i n M a c e B i n g l e L o w B u s h R i v e r N o r e m b e g a K i r k l a n d L a k e S o u t h P o r c u p i n e I r o q u o i s F a l l s B E N O I T O S S I A N M c E L R O Y G A U T H I E R E L D O R A D O D U N M O R E T E R R Y T O L S T O I M c N E I L F A S K E N B L A C K S T O C K Z A V I T Z G E I K I E H I N C K S C L E A V E R C A R M A N L A N G M U I R F A L L O N D O U G L A S S H A W T H O M A S R O B E R T S O N B A D E N M I C H I E T I M M I N S S H E B A N O R D I C A M c E V A Y G R E N F E L L B E R N H A R D T M A I S O N V I L L E H O L M E S B U R T E B Y B O M P A S L 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Transcript

FIRST VERTICAL DERIVATIVE

Eötvös

LEGEND

Introduction

Ontario Geological Survey.This map is published with the permission of the Director,

© Queen's Printer for Ontario, 2004.

Issued 2004.

Information from this publication may be quoted if credit is given. It is recommended that reference be made in the following form:

Ontario Geological Survey 2004. Airborne gravity survey,

Bouguer gravity, northeast Timmins area: Highway 101 corridor; Ontario Geological Survey,

sin² )/sqrt (1 - 0.00669437999013 × sin² ), where is the

the latitude , and h is the altitude of the plane above the

gravity data to calculate the Bouguer anomaly data: The following standard corrections were applied to the

The calculated gravity is corrected for the Eötvös effect and the aircraft in flight by extremely accurate GPS measurement.environment. This is achieved by modelling the movements of processing must extract gravity data from this very dynamicaircraft can reach 0.1 g, equivalent to 100 000 mGal. Data inertial accelerations. In survey flying, accelerations in anby subtracting the GPS derived aircraft accelerations from the designed filters to avoid biasing the data. Gravity is calculated and decimated to match GPS measurements using specially Gravity data are recorded at 128 Hz. Accelerations are filteredGravity Data

DESCRIPTIVE NOTES

6 km420Scale 1:100 000

(Some symbols may not apply to this map)

OTHER SYMBOLS

Administrative

Power line

Main road

Secondary road

Trail

Drainage

Railroad

boundary

data acquisition system.radar altimeter, laser altimeter and a Sander NavDAS digital The aircraft were also equipped with a GPS navigation system,Geophysics' AIRGrav airborne gravity system. The survey was flown using 2 aircraft equipped with Sander

Radar sample rate: 4 Hz

midpoint 2.7 km full wave length

Grid cell size: 200 m

False northing: 0 mFalse easting: 500 000 mCentral scale factor: 0.9996Central meridian: 81°00'W (UTM zone 17N)Datum: NAD83Projection: Universal Transverse Mercator

Bouguer and terrain correction density: 2.67 g/cm³

Laser altimeter: Optech ADM4 laser rangefinder

Digital acquisition system: Sander NavDASLaser sample rate: 100 Hz

200 m AGL, constant height (Test Survey)Aircraft altitude: 200 m AGL, draped

May 15 to May 18, 2003 (Test Survey)Dates flown: December 6, 2003 to January 28, 2004SURVEY SPECIFICATIONS

GPS sample rate: 10 Hz

BASE STATION

Gravity data spatial filter: 0% pass at 2 km, 100% pass at 4 km,

Radar altimeter: TRT ERT 530A GPS sample rate: 10 HzGPS receiver: Novatel Millennium, 12 channel, dual frequencyNAVIGATION SYSTEM

Gravimeter sample rate: 128 HzGravimeter sensitivity: 0.1 mGalGravimeter sensor: Sander Geophysics' AIRGravGRAVIMETER

Registration: C-GSGW and C-GSGUType: Cessna Grand Caravan 208-B.AIRCRAFT

SURVEY PARAMETERS

GPS receiver: Novatel Millennium, 12 channel, dual frequency

Overall project management by Timmins Economic Development Corporation.

Contract management, project management by Robert Calhoun, Project Manager, Discover Abitibi Initiative.

Data acquisition, compilation and map production by Sander Geophysics Limited, Ottawa, Ontario.

To enable the rapid dissemination of information, this map hasnot received a technical edit. Every possible effort has been made to ensure the accuracy of the information presented;however, the Ontario Ministry of Northern Development and Mines does not assume liability for any errors that may occur.Users can verify critical information from the corresponding digital profile and gridded data distributed by the Ontario Geological Survey.

CREDITS

Quality assurance and quality control by Laurie Reed, L.E. Reed Geophysical Consultant Inc.

PROCESSING PARAMETERS

COORDINATE SYSTEM

precise correction of the effects of aircraft motion. space, independent of the maneuvers of the aircraft, allowing accelerometers, which remain in a fixed orientation in inertial tuned inertial platform. This platform supports 3 orthogonal Sander Geophysics' airborne gravimeter uses a Schuler-AIRGrav Airborne Gravity System

FIRST VERTICAL DERIVATIVE OF

5 Eötvös

25 Eötvös

100 Eötvös

Pipeline

http://www.discoverabitibi.com/technical-projects.htm, report. Discover Abitibi website: Elieff, S.H.P. 2003. Airborne gravity evaluation survey - project

Magnetic declination in 2004 for the centre of the map area was11.03° W. Magnetic inclination in 2004 for the centre of the maparea was 74.64° N. (Calculated using the International

SOURCES OF INFORMATIONBase map information data derived from Ontario LandInformation Warehouse, Land Information Ontario.

the x (north) and y (east) directions, r is the Earth's radius at of the aircraft, v and v are the velocities of the aircraft in0.00007292115 × cos × v - v ²/(r + h), where is the latitude Eötvös correction = -v ² × cos /((r + h) cos ) - 2 ×

latitude of the aircraft.

aircraft in metres.Free air correction, g = -0.3086 h, where h is height of the

Universal Gravity constant, is density (2.67 g/cm³ for this Bouguer, g = 2 h = 0.096278 h, where is the

Curvature of the earth, g = 1.464 h - 0.3533 h² + 0.000045 h³,

project), h is height of the ground below the aircraft in metres.

where h is height of the ground in kilometres.

Terrain, g , computed using a digital terrain model derived by combining terrain from several sources. Within the survey area,the line data were used to calculate the topography bysubtracting the altimeter data from the altitude of the aircraft above the mean sea level. Terrain data for the area outside the survey blocks were derived by combining 3 arc secondCanadian Digital Elevation Data and 30 arc second USGS

Static correction, g , based on static ground recordings and repeat lines.

Level correction, g , based on line intersections.

Thus Bouguer anomaly = G - g - g - g + g - g - g , where G is the calculated gravity adjusted for Eötvös effect andnormal gravity.

accessed July 2003.

Fairhead, J.D. and Odegard, M.E. 2002. Advances in gravity survey resolution; The Leading Edge, v.21, no.1, p.36.

Ferguson, S. 2000. Experiences with AIRGrav: Results from anew airborne gravimeter; International Association of GeodesySymposia, v.123.

Sander, S., Lavoie, V., Peirce, J. and Charters, R.A. 2003.Advantages of close line spacing in airborne gravimetric surveys; The Leading Edge, v.22, no.2, p.136.

Sander, S., Ferguson, S., Sander L. and Lavoie V. 2002. Measurement of noise on airborne gravity data using even and odd grids; First Break, v.20, no.8.

Bruton, A.M. 2001. A comparison of inertial platform, damped 2-axis platform and strapdown airborne gravimetry; International Symposium on Kinematic Systems in Geodesy, Geomatics and Navigation (KIS2001-Banff, Alberta), June 2001.

Argyle, M., Ferguson, S., Sander, L. and Sander, S. 2000.AIRGrav results: a comparison of airborne gravity data with GSC test site data; The Leading Edge, v.19, no.10, p.1134.

Base maps and map surrounds by the Ministry of NorthernDevelopment and Mines, Sudbury, Ontario.

Test Survey) and 1000 m (other areas)Traverse line spacing: 500 m (northeast Timmins area and Flying speed: 51 m/s averageAircraft positioning: Differential GPS

10 km (northeast Timmins area), and20 km (other areas)

Traverse line direction: along bearing 90° - 270°Control line direction: along bearing 0° - 180°Total line kilometres: 16 132 lkm (14 296 lkm + 1836 lkm

Test Survey)

normal gravity. The sample interval is reduced to 2 Hz.

GRS-80 ellipsoid.

Normal gravity = 9.7803267714 × (1 + 0.00193185138639 ×

Control line spacing: 5 km (Test Survey),

Discover Abitibi InitiativeThe Discover Abitibi Initiative is a regional, cluster economicdevelopment project based on geoscientific investigations of the western Abitibi greenstone belt. The initiative, centred on the Kirkland Lake and Timmins mining camps, will complete 19 projects developed and directed by the local stakeholders.FedNor, Northern Ontario Heritage Fund Corporation andprivate sector investors have provided the funding for the

Initiative Découvrons l’AbitibiL’initiative Découvrons l’Abitibi est un projet de développement économique régional dans une grappe d’industries, projetfondésur des études géoscientifiques de la ceinture de roches

zones minières de Kirkland Lake et de Timmins, mènera à bien 19 projets élaborés et dirigés par des intervenants locaux. FedNor, la Société de gestion du Fonds du patrimoine du Nord de l’Ontario et des investisseurs du secteur privé ont fourni les

Discover Abitibi

Découvrons l' Abitibi

A project of innovation, cooperation and revitalization

Un projet d' innovation, de coopération et de renouvellement

Discover Abitibi

Découvrons l'Abitibi

vertes de l’Abitibi occidental. Cette initiative, centrée sur les

fonds de cette initiative.

x

x y

x y

fa

sb

ec

t

sc

lc

fa sb ec t sc lc

initiative.

first vertical derivative of the terrain-corrected

OF THE BOUGUER GRAVITY

THE BOUGUER GRAVITY CONTOURS

digital terrain data.

NTS References: 32 D/5, 12; 42 A/6, 7, 8, 9, 10, 11

The originally proposed coverage for the Timmins areaproduced significant gaps in parts of the survey area. Whilecarrying out the contracted geophysical surveys (indicated bythe light pink area(s) on the location map), Sander Geophysicscontinued their flight lines through the gaps and, in some areas, extended the lines beyond the originally proposed boundaries(see orange area(s) on the location map). This has produced

ACKNOWLEDGMENT

a continuous data stream and added 2281 line-kilometres of

The final data set for the gravity surveying in the Timmins–Kirkland Lake region also includes a 1836 line-kilometre test survey completed by Sander Geophysics that was flown over a large area north and west of Timmins.

These additional, uncontracted data have been graciouslydonated by Sander Geophysics. The donation has served to further enhance the Discover Abitibi Initiative (DAI) and is gratefully acknowledged by the Timmins Economic Development Corporation, the management committee of DAIand the private sector partners.

uncontracted data, thus resulting in considerable enhancementof the data set.

Terrain-Corrected Bouguer Gravity

MAP 81 925

First Vertical Derivative of the

AIRBORNE GRAVITY SURVEY

Ontario Geological Survey

HIGHWAY 101 CORRIDOR

NORTHEAST TIMMINS AREA

Map 81 925, scale 1:100 000.

Geomagnetic Reference Field.)

Gravity depression

-119.1-59.2-46.4-39.4-34.1-30.3-27.6-25.6-23.8-22.3-20.9-19.7-18.4-17.3-16.2-15.0-13.9-12.8-11.6-10.4-9.3-8.1-6.9-5.8-4.6-3.5-2.4-1.3-0.11.12.33.64.96.27.58.9

10.211.612.914.115.416.617.818.920.221.522.924.325.827.429.130.932.935.137.540.244.168.2

Thackeray Provincial Nature Reserve

11 626

67

101

572

101

577

610

610

803

11

60

65

70

75

80

85

90

05 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95

60

65

70

75

80

85

90

05 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95

500000m 600000m

600000m500000m 605000m

5355000m

495000m

5355000m

495000m

5395000m

605000m

5395000m

Anthony

Burnt Hill

The Canyon

Centre Hill

Connaught

Dugwal

Ghost Range

Guibord Hill

Holtyre

Kelso

Mount Kempis

Lawson Hill

Matheson

McCool Hill

Ramore

Shillington

Val Gagne

Vimy Ridge

Warden Hill

Watabeag

Wavell

McIntosh SpringsMonteith

Fielding

Black Island

Burnt Islands Dominion Island

Mount Goldsmith

Iroquois Point

Lightning Point

Poplar Island

Mount Smollett

Island

Island

Island

Cindy

McLeod

Moose

Poplar

Grassy

Point

Point

Frederick House LakeProvincial

Nature Reserve

IslandHand

Night HawkCentre

NorthPeninsula

EastPeninsula

Kettle Lakes

Provincial Park

Shallow River

Provincial

Nature Reserve

Abitibi-de-TroyesProvincial Park

DefiancePeak

MountStringer

LavaflowMountain

Dent Island

Hoyle

Partridge Point

Welsh

Wings

Hill's Landing

Onagon McDougal Point

Pamour

McCART TOWNSHIPCALVERT TOWNSHIP

TEEFY TOWNSHIP

RICKARD TOWNSHIP

KNOX TOWNSHIP

MILLIGAN TOWNSHIPWARDEN TOWNSHIPCOULSON TOWNSHIP

WILKIE TOWNSHIP

WALKER TOWNSHIPCLERGUE TOWNSHIP

DUNDONALD TOWNSHIP

EVELYN TOWNSHIP

GOWAN TOWNSHIP

HOYLE TOWNSHIP

MATHESON TOWNSHIP

STOCK TOWNSHIP TAYLOR TOWNSHIP

CARR TOWNSHIP

BEATTY TOWNSHIP MUNRO TOWNSHIP

McCOOL TOWNSHIPRAND TOWNSHIP LAMPLUGH TOWNSHIP

FRECHEVILLE TOWNSHIP

STOUGHTON TOWNSHIP

MARRIOTT TOWNSHIP

HOLLOWAY TOWNSHIP

HARKER TOWNSHIP

GARRISON TOWNSHIPGUIBORD TOWNSHIP

HISLOP TOWNSHIP

BOWMAN TOWNSHIP

CURRIE TOWNSHIP

BOND TOWNSHIPMACKLEM TOWNSHIP

CODY TOWNSHIP

WHITNEY TOWNSHIP

SHAW TOWNSHIP

CARMAN TOWNSHIP

THOMAS TOWNSHIP

SHERATON TOWNSHIP

EGAN TOWNSHIP

McCANN TOWNSHIP

PLAYFAIR TOWNSHIP

COOK TOWNSHIP

BARNET TOWNSHIP

THACKERAY TOWNSHIP

ELLIOTT TOWNSHIPTANNAHILL TOWNSHIP

DOKIS TOWNSHIP

PONTIAC TOWNSHIP

BEN NEVIS TOWNSHIP

CLIFFORD TOWNSHIP

BISLEY TOWNSHIPMELBA TOWNSHIPBENOIT TOWNSHIPBLACK TOWNSHIP

TOLSTOI TOWNSHIP

McEVAY TOWNSHIPTIMMINS TOWNSHIP

BLACKSTOCK TOWNSHIP

LANGMUIR TOWNSHIP

ELDORADO TOWNSHIP

TULLY TOWNSHIP

LITTLE TOWNSHIP

FallsIroquois

Airport

KERRS TOWNSHIP

St. Patrick Island

Mistaken

Islands

Kenosha

Island

Porquis Junction

Abitibi-de-Troyes

Provincial Park Abitibi-de-Troyes

Provincial Park

DeadmansPoint

Kilburn

GERMAN TOWNSHIP

MICHAUD TOWNSHIP

Lightning Mountain

MerrimanMount

Traverse Hill

Esker Lakes Provincial Park

ONR

Abitibi I.R. 70

QU

EBEC

ON

TAR

IO

Carlyle Lake

Clarice Lake

Frederick House Lake

Froome Lake

Grove Lake

Harker Lake

Lawlar Lake

Northeast Bay

Thackeray Lake

Trollope Lake

Perry Lake

McDiarmid Creek

McIntosh Lake

Salve Lake

Moose Lake

Pinaws Lake

Lake Abitibi

Ghost River Bay

Lower Bay

Makua Bay

O'Brien Bay

Lake

Chest

Ice

LakeClearwater

CarmanBay

Whitefish

River

McL

eod

Cre

ek

BottleyLake

Night Hawk

Lake

Lake

Lake

Lake

Long

Big Club

Gibson

LakeHeart

Warner

LipsettLake

Lake

LakeSheraton

BradleyLake

LakeWelcome

DavisLake

Stock

Lakes

RoundelayLake

Chapman

Lake

RiceLake

Lake

LakeReid

GrassyLake

LevacqueLake

LakeMcMillan

Lake

LakeHeslip

Froude

Pike

Cherry

AndrewSabourin

Lake

Lake

LakeLake

Dell

Turkey

De Courcey

Wildgoose

Turtle

Lake

Lake

Lake

Lake

Lake

LakeFrancesca

Lake

Lake

Lake

Devereaux

McVittie

Butler

Lake

LakeBolton

Talbock

Pike

River

Little

Pike

River

Black

River FitterLake

LakeBarnet

PikeEmens

Dewhirst

Lake Lake

Lake

Death Lake

Loon Lake

Oki

kodo

sik

Nar

row

s

Old Man Lake

Roy Lake

South Bay

Stuart Lake

Benoit Lake

Buskegau River

LakeNerandeau

Lizard Lake

HouseCreek

Wilson

Lake

Meado

w

Cree

k

Creek

Bobs

Bobs Lake

Rayner LakeFord

Lake

Swampy

Creek

Shallow

RiverRed

Deer

Lake

Boundary Bay

River

Mat

taw

asag

a

Lightning

River

Lightning Bay

Ghost

River

Wagoshi

Lake

Munro Lake

River

SlimCreek

Dundo

nald

LakeDundonald

Black

Abitibi

Abitibi

Rive

r

River

River

River

Driftwood

Creek

Camp

Lake Abitibi

Porc

upin

e

River

House

Rive

r

Shall

ow

Rive

r

Painkiller Lake

Cree

k

Salve

Shallow

River

Barto

n Cr

eek

Centre

Creek

Low

Creek

Cree

k

Kech

ewaig

Creek

McCool

Mak

ua

Cree

k

Three Nations

Lake

Goo

se

Cree

k

Pexton

North

Driftwood

Creek

Creek

Crooked

Wabbler

Creek

Drif

twoo

d

Litt l

e

Riv

e r

Grindstone

Creek

Watabeag

Rive

r

Hooker

Creek

BlackRiver

Nickle

Creek

Perry

Creek

Thac

kera

y

Creek

River

Mattawasaga

Redstone

River

WildgooseCreek

McKinley Lake

Ghost Lake

River

Magusi

McDiarmid Lake

Cree

k

Doki

s

Dokis Lake

LakeRanger

LakePontiac

Keith

Lake

Mary Lake

Marten Lake

Webster

LakeDickson Lake

Webster

Creek

Campbell Lake

Lulu Lake

Gourlay Lake

Gaf Lake

Lauramay Lake

Malloch Lake

LakeBlackwater

Raf Lake

Kasba Lake

Creek

Croteau

Nigh

t

Hawk

Riv

er

Radisson

Creek

Rive

r

Whi

t efis

h

Greenock Lake

Kasba

Creek

Frederick

Frederick

Pike

Chesney Bay

Gar

rison

Creek

Okikodosik Bay

River

Barn

etC

reek

48°18'11"

48°45'11"

79°30'13"

48°17'37"

48°44'36"

79°31'01"

81°00'00" 50' 40' 30' 20' 10' 80°00'00" 50' 40'81°08'10"

40'

30'

20'

81°08'05" 81°00'00" 50' 40' 30' 20' 10' 80°00'00" 50' 40'

20'

30'

40'

66

101

112

11

67

101

ONRONR

49°49°81°

81°

80°

80°

LarderLake

Watabeag

Lake

Night

Hawk

Lake

Lake

Abitibi

AbitibiRiver

River

Ri v

e r

Black

River

Wat

a bea

g

Riv er

Whi tefi sh

River

House

Frederick

Larder Lake

Holtyre

Ramore

Matheson

Black CreekAlbert

Monteith

Shillington

Connaught

Hoyle

PorquisJunction

Twin Falls

Potter

Arpin

MaceBingle

Low Bush River

Norembega

Kirkland Lake

South Porcupine

IroquoisFalls

BENOIT

OSSIAN

McELROY

GAUTHIER

ELDORADO

DUNMORE

TERRY

TOLSTOI

McNEIL

FASKEN

BLACKSTOCK

ZAVITZ

GEIKIE

HINCKS

CLEAVER

CARMAN

LANGMUIR

FALLONDOUGLAS

SHAW

THOMAS

ROBERTSON

BADEN

MICHIE

TIMMINS

SHEBA

NORDICA

McEVAY

GRENFELL

BERNHARDT

MAISONVILLE

HOLMESBURT EBY

BOMPAS

LEE

BLACK

OTTO

LEBEL

MORRISETTE

TECK

BOSTON

ARNOLD

McGARRY

HEARST

McVITTIE

KATRINE

McFADDEN

BEN NEVIS

TANNAHILL

HOLLOWAY

FRECHEVILLEMATHESON

WHITNEY

HOYLE

GOWAN

HANNA

TULLY

DUFF

REAUME

McCANN

COULSON

KNOX

MARATHON

MOODYAURORA

STOCK

CLERGUE

CALVERT

CODY MACKLEM

GERMAN

DUNDONALD

McCART

NEWMARKET

EVELYN

LITTLE

MANN

EGAN

CURRIE

TAYLOR

BOND

SHERATON

BOWMAN

RICKARD

WALKER

TEEFY

CARR

WILKIE

ST. JOHN

BROWER

PYNE

WESLEY

SHERRINGMORTIMER

EDWARDS

MELBA

BARNET

MICHAUDGUIBORD

PLAYFAIR

HISLOP

COOK

MUNRO

WARDEN

KERRS

BEATTYMcCOOL

MILLIGAN

HARKER

BISLEY

THACKERAY

GARRISON

CLIFFORD

ELLIOTT

LAMPLUGHRAND

STEELEPURVIS

GALNA

BOWYERBONIS

BERRY

SARGEANT

PONTIAC

DOKIS

STOUGHTON

MARRIOTT

Virginiatown

QU

EBE

C

Location Map 1 cm equals 15 km

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