Carmacks volcanic field 

(Late Cretaceous) 

(Northern Canadian Cordillera, unit Kv)

Consists chiefly of nonmarine, alkalic, mainly porphyritic andesite flows and pyroclastics rocks. Contains 
subordinate rhyolite, trachyte, and dacite in lower part, and basalt in upper part. For paleomagnetic 
determinations, grade A data from 70 Ma extrusive volcanic rocks indicate a 16o+5o southerly 
displacement with respect to North America. REFERENCE: Marquis and Globerman, 1988; Wheeler and 
McFeely, 1991