14 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. "Jl 



Glacier Lake. The rocks exposed in the highest chft's of Alount 

 I-'orbes and Mons 1-eak belong to the great Carboniferous system 

 of rocks of this region. Below this series occur the Devonian rocks, 

 the snow-capjjed cliffs shown in figure i above Mons Glacier, form- 

 ing a belt i.ooo feet or more in thickness, and below these are the 

 strata of the Sarlxich formation of the Ordovician system, and 



Fig. 15. — Mountain sheep in game sanctuary, Rocky Mountains Park, 

 Alberta, Canada. Photograph liy Mr. and Mrs. C. D. Walcott, igiQ. 



beneath the Sarbacli the five formations assigned to the Copper Cam- 

 brian series. Attention should be called here to Mount Murchison, 

 figure 4, where there is almost the same series as that ex]:)Osed in the 

 clilTs on the long motmtain slopes of figure i. To the left of Mount 

 Murchison in figure 4 there is a low ridge formed of strata of 

 Middle Camlirian age which passes beneath the rocks of Motint 

 Murchison. 



