PROVISIONAL SECTION SUBDIVISIONS 



297 



some of the lower beds found in this section. Previous to this time it 

 seemed doubtful that any exposures of the Kootanie could be found east 

 of the mountains or that the correlation with the Cascade formation of 

 Montana or that in the Black bills called Lakota could be safely assumed. 

 This seems less risky if the Kootanie occurs in the section here discussed. 



Provisional Subdivisions of the Sections 



As the fossil remains have not been critically studied, the subdivisions I 

 have made are provisional and the succeeding remarks are put forward 

 with the hope that criticism and discussion may reveal errors or misap- 

 prehensions on my part which if left unnoticed might prejudice Mr 

 Cairnes in his stuclv of the area : 



Provisional. 



Dawson's section. Cairnes' section. 



Type of fossils. 



Edmonton. 



Saint Mary river. Sandstones with coal 

 seams. 



Brackish water and 

 plants. 



Bearpaw. 



Pierre. 



Shale, 250 feet. 

 Sandstone, 50 feet. 

 Shale, 450 feet. 



Marine. 



Judith river. 



i 

 Belly river. 1 Sandstone, 750 feet. 



Colors— green, blue, yel- 

 low, and red. 



Fresh water. 



Claggett. 



Lower dark shales. Banded sandstone and 

 clays, 250 feet. 





Eagle. 



Light colored sandstone, 

 50 feet. 





Colorado. 



Sandy shales grading down 

 to black shales, 750 feet. 





Dakota. 



• 



Light colored hard sand- 

 stone conglomerate at 

 base, 150 feet. 





Kootanie. 



Kootanie. Dark sandstone and shale, 

 with coal seams. 



Plants, conifers, and 

 ferns. 



Fernie. 



Dark brown to black shale, 

 225 feet. 



Carboniferous limestone. 



Carboniferous Limestone 



The lowest member of the above section, the Carboniferous limestone, 

 was by Dr G. M. Dawson* made to include the black shales resting on 



* Annual Report, Geological Survey of Canada, vol. i, p. 104B. 



