CONTENTS 
Page 
Introduction 3 
General statement of the problem 3 
General classification of the rock series 5 
Relationship of the Galton series (Beltian) to the Lower Cambrian at Elko, B.C. . . 6 
Gateway formation 6 
Phillips formation 6 
Roosville formation 7 
Burton formation 7 
Relationship of the Purcell series to the Lower Cambrian near Cranbrook, B.C 9 
Aldridge formation 11 
Creston formation 11 
Kitchener formation 11 
Siy eh formation 11 
Purcell lava 11 
Cranbrook formation 12 
Eager formation 12 
Evidences of an unconformity at the base of the Cambrian in the Cranbrook area. 12 
Ram Creek area 13 
Canal Flats section 13 
General summary of the Precambrian-Cambrian contact in southeastern British 
Columbia 14 
Illustrations 
Figure 1. Index map showing location of the Precambrian-Cambrian contact in 
southeastern British Columbia 4 
Figure 2. Diagram illustrating relationship of the Precambrian and the Lower 
Cambrian formations near Cranbrook, B.C 10 
