Gravity and magnetic methods - Geophysics for the Mineral Exploration Geoscientist - page 180

a)

80°W

Y

B

0 10

Kilometres

I

X

T

K

Inset C

W

Inset A

U

V

F

W

H

J

D

V

X W

S

R

E

H

Inset B

C

G

S

P

48°N A 48°N

Q

L

H

A

O

A

P

0 1

Kilometres

H

N

Inset B - Adams

0 1

B

Kilometres

M

Lake C Kerr Addison

LL-CDZ

B

A

Inset A Kirkland Lake

H

Syenite
Mafic igneous
Meta-sedimentary
Iron formation/chert
Felsic-intermediate igneous

0 1

80°W

Kilometres

Shafts/pits
Cover/lakes
Faults

Figure 3.74 Aeromagnetic data and selected geology from the Kirkland Lake area. (a) Pseudocolour TMI, and (b) grey-scale first vertical derivative. Both images are illuminated from
the northeast. The various labelled features are discussed in the text. KLMB

Larder Lake-Cadillac Deformation Zone. Geological maps
redrawn, with permission, from Dubuc ( 1966 ) and from Robert and Poulsen ( 1997 ). Data source: Ontario Geological Survey © Queen

- Kirkland Lake Main Break, and LL-CDZ -

' s Printer for Ontario 2014.