Geological Survey, Canada. 
MountJohnson 
Feet 
1099 _log0 2000 3900 
Metres 
10 Q 500 1/000 
Pulaskite 
(Laurvikose) 
Essexite 
(Andose) 
Essexite 
(Essexose) 
Hornstone 
| (altered Lorraine shale) 
