38 



THE ROYAL SOCIETY OF CANADA 



CLAPP S CLASSIFICATION OF THE ROCKS OF VANCOUVER ISLAND— Cont'd 



Mesozoic 



Upper 

 Cretaceous 



Nanaimo series. 

 Cabriola forma- 

 tion 



Northumber- 

 land formation. 



De Courcy for- 



mation. 



Cedar District 

 formation 



Protection for- 

 mation (Doug- 

 las coal seam) 



Newcastle coal 

 seam 



Cranberry for- 

 mation 



Extension for- 

 mation 



Wellington coal 

 seam 



East Welling- 

 ton formation 



Haslam forma- 

 tion (Marine 

 shales) 



Benson forma- 

 tion 



Chiefly sand- 

 stones. 



Conglomerates, 

 sandstones, and 

 shales. 



Chiefly sand 

 stones. 



Chiefly shale 



Grits, sandy 

 shales ; contains 

 Douglas coal 

 seam 



Shaly sandstones 

 and sandy shale; 

 some coarse 

 sandstones and 

 conglomerates 



Chiefly conglo- 

 merates, some 

 shales, sand- 

 stones, and small 

 coal seams 



Chiefly sand- 

 stone 



Chiefly shale; 

 some calcarinites 



Basal conglome- 

 rates 



