






ROCKY MOUNTAINS. aL en 
8000 Feel: ue 4 
SYS | is 
\ By ed S 
"S&S Se 
Se = 
BN - N 
PORGUPINE HILLS, ~ 
Laramte 

Laramic (Lignile Tertéary) 
EDCE OF COTEAU. 


Palæozoic rocks of 





mountains 
v A 
5000 F£ | 
TOUCHWOOD HILLS ; | 
‘Lar aimie ? Livingstone DUCK MOUNTAIN | 
Se mer mi. =e Teme CS D EE st = = 
Se TE dde Æ =n et est M = TRE 
Devonian and Silurian Limestones Laurentian and Huronian 
DIAGRAMATIC GENERAL SECTION FROM THE LAURENTIAN AXIS TO THE 
ROCKY MOUNTAINS, NORTH OF THE 49rx PARALLEL. 
Horizontal Scale— Miles 



D 25 50 ‘ 
Ss 100 } 200 MILES 
io Pe a = 
LS SEE 
TS 4 
