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Transactions of the Royal Canadian Institute 



to bore. In these areas it may prove, however, that the faulting hais 

 exposed to ready mining shales that have absorbed or retained the oils 

 or material that c^n be distilled into oils. 



Fig. 1 — The Cretaceous Basin 



Oil Formations. 



In the United States oil is found in formations of Palaeozoic, Meso- 

 zoic, and Tertiary ages. In the Palaeozoic, oil formations are found 

 beneath the Coal Measures in rocks whose ages range as far back as the 

 Cambro-Silurian. The greater accumulations appear to be in the porous 



