PART III 

 STRATIGRAPHIC SECTIONS 



In this third part, detailed sections are given for all the more im- 

 portant localities where lower Paleozoic beds outcrop in the Rocky 

 Mountains of Alberta and British Columbia, as far as they are avail- 

 able. The sections are usually in natural order, i. c._, the highest beds 

 present or studied are described first, followed by the other beds in 

 descending order. The localities represented are arranged in a geo- 

 graphic order, based as far as possible on mountain chains or groups. 

 Without some such arrangement, one not familiar with the geography 

 of the Canadian Rocky Mountains would find it very difficult to 

 locate many of the places here discussed. This difficulty is further 

 increased by the inadequate maps available. 



These sections have not all been worked out in equal detail or 

 accuracy, but they present what is now known concerning the charac- 

 ter and thickness of the beds and the nature and relationships of the 

 contained faunas. Much further and more detailed work is urgently 

 needed throughout all of the region. 



The faunal lists accompanying the sections contain but a small 

 fraction of the species that have been collected, but as the rest are 

 undescribed, the inclusion of their names in the lists would be useless. 



DEVILS GAP AND GHOST RIVER AREA 



In the cliffs of the Rocky Mountain front between the south fork 

 of Ghost River and Red Deer River, the Devonian forms the upper 

 cliffs, and Cambrian formations form the lower. Between the De- 

 vonian and the Cambrian, the thin Ghost River formation breaks 

 down to form a terraced slope. No traces of the Ozarkian (Mons) 

 were observed and there is no evidence of it having been removed 

 by erosion. It is barely possible that the magnesian limestones of the 

 Ghost River formation were deposited in Upper Cambrian time, but as 

 stated previously, there is no proof for this view. The outstanding 

 stratigraphic feature of this area is the absence of Silurian, Ordo- 

 vician, Ozarkian, and some Upper and Middle Cambrian formations 

 that are so well developed in the Sawback Range and the western 

 side of the Rocky Mountains generally. 



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