Correlation of the Triassic Rocks of Britteli Columbia and Yukon 





Ala-kan equivalents. 



Queen Charlotte Islands. 



Vancouver Island, 

 north end. 



Islands east of Vancouver Island, 

 Vancouver Island. southern part. 



Forty-ninth parallel. 



Whipsaw Creek. 



Kamloops district. 



Stlkine River. 



Pine River. 



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Peace River. Liard River. Stewart River. 



1 1 



! 



P 



McCarthy formation and 

 equivalent heils with 

 Pseudomonotis subeircu- 



Flaggy calcareous areillitc 

 and thin limestones witli 

 Pseudomonotis subcircu- 

 laris. 



Flaggy limestone- 

 and argillites. 



Pardon Bay group (shale, 

 argillite, and impure 

 limestone with Pseudo- 

 monotis subcircularis 

 and Arniotftes vancou- 

 verensis). 





Cultus formation (argil- 

 lites with Arniotites 



Aulacoceras? cf. car- 

 lottensis). 



Argillites with Pseudn- 





?Shalv rocks near Glen- 

 orn with Halobia. 



Beds of unknown charnctei 

 with Pseudomonotis sub- 



| Impure limestones and 

 i shales with Pseudomn 

 I notis subcireulnris. 





Impure limestone, argil- 

 lites, and quartzite. 1 - 

 (with Pseudomonotis 

 subcircularis and Ha- 

 lobia). 



a 



Limestone of lliamna Lake 



with corals. 

 ? N izi na limestone (in 



part ?). 



(Unconformity.) 







?Sutton formation (lime- 

 stone with Choristoceras, 

 Myophoria, and corals). 

















3 « 



Chit [stone and Nizina (?) 

 limestones and equiva- 

 lent beds with Halobia 

 of. snperba. 



Massive limestone. 



Massive limestone. 

























Dawson ites-bearing beds of 

 Hamilton Bay. 























Calcareous shales, sand- 

 stones, and limestones 

 with Dawsonites eano- 

 dense, Nathorstites Mc- 

 Connelli, etc. 





I 



Slates of Brooke Mountain, 

 Seward Peninsula, with 

 Gymnutoceras and Dao- 

 nella. 















Nicola aeries (volcanic 

 rocks and interbedded 

 limestone and argillite 

 with Daonella cf. lorn 

 mail, etc.). 













1 £ 



Nikolai greenstone anc 



Volcanic rocks. 



Volcanic rocks. 



Valdes group (lavas and 

 tuffs). 

















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