552 



DEPARTMENT OF THE INTERIOR 



2 GEORGE V., A. 1912 



ft 



A 



03 



O 



X 

 X 

 X 



H 



CQ 

 < 



Skagit Range. 



fl'o 



<^3 



Diabase dikes in Chil- 

 liwack batholith 

 (post-Miocene ?) 



Camptonite and syen- 

 ite porphyry dikes 

 in Chilliwack bath- 

 olith. • 



Syenite porphyry (?) 

 dikes (?) cutting 

 Huntingdon forma- 

 tion. 



Monzonite stock cut- 

 ting Skagit volcan- 

 ics. 



Chilliwack granodio- 

 r'te batholith. 



Slesse diorite (stock ?) 



Skagit harzburgite in- 

 trusion. 



Dunite dikes and (in 

 part) gabbro dikes 

 cutting Chilliwack 

 series. 



Skagit Volcanicseries. 



(All possibly Eocene.) 





g'-o 

 a o 



5^r^ 



<:3 



Syenite -porphyry 

 chonolith. 



Castle Peak gran- 

 odiorite stock. 



Lightning Creek 

 diorite stocks. 



Porphyrite sills 

 and dikes in 

 Pasayten sedi- 

 ments. 



- 



Okanagan Range 



and Kruger 

 Mountain Plateau 



Alluvium. 



Glacial drift. 



Dikes of basalt, 

 andesite and por- 

 phyrite. 



Cathedral gran i t e 

 batholith of two 

 phases. 



Park granite stock. 



Similkameen grano- 

 diorite batholith 

 of two phases. 



- 



Columbia System 



West of 



Christina Lake, 



and Anarchist 



Plateau. 



Alluvium. 

 Glacial drift. 



Flows of 'shackan- 

 ite ' lava. 



Rhomb- porphyry 

 chonolith, sills, 

 dikes and flows. 



Pulaskite porphy- 

 ry sills and 

 dikes ; trachyte 

 flows. 



Mica and horn- 

 blende a n d e - 

 sites, Midway 

 district. 



Basalt and augite 

 andesite. 



Kettle River for- 

 mation. 



g 



1 < 



<5 S3 



CO fi 



Alluvium. 

 Glacial drift. 



Granite porphyry 

 dikes. 



Syenite porphyry 

 dikes and chon- 

 olith. 



Syenite aplite and 

 camptonite dikes. 



Missourite dike. 



Coryell syenite 

 batholith. 



- 



H 

 O 



3 



w 



■p.9 



«j3 



Salmon River monzo- 

 nite stock. 



Bayonne granodio- 

 rite batholith. 





' 



Pleistocene. 



_ 



3 



§ 



o 



.§1 



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