PRE-CAMBRIAN OF SOUTHEASTERN B.C. 
85 
(5), Since eryptozoan forms have not been described, as far* 
as the writer knows, from formations later than the Pre-Cambrian, 
the classification of the Roosville and the underlying formations 
as Pre-Cambrian is still more firmly established. 
1 
THE PURCELL SERIES. _ 
1*1 AA/v* 
The— Purcel l s e r ies of-East- K o o ten a y ^was first described by 
Daly in HX)^, 1 and subsequently in un chang e d-f o r m in 19 13, 2 
and - i s as follows: — 
Erosion surface. 
Middle Cambrian. . .Moyie 
Purcell lava 
Kitchener, upper part 
Lower Cambrian. . . . Kitchener, lower part 
Creston, upper part 
Beltian Creston, lower part 
feet. 
3400 + 
465 
6000 + \ 
1400+ J 
3000 + 1 
6500 + J 
7400 
9500 
Base unexposed. 
In 1911, Daly identified for the writer, the Kitchener and 
Creston formations, in the neighbourhood of Kingsgate, B.C., 
(see map) where the south-flowing Moyie river crosses the 
International Boundary line. Subsequent work by the writer 
in 1912, definitely proved that the so-called Kitchener rocks 
near Kingsgate were older and not younger than the Creston, and 
the name Aldridge formation was proposed for this group 
of rocks. Further work on the section in the neighbourhood of 
the Moyie lakes (see map) showed that a group of rocks litholo- 
gically similar to those described by Daly as Kitchener, overlies 
the Creston and underlies the Siyeh. The name Kitchener 
has hence been retained for those rocks which overlie the Creston 
and underlie the Siyeh. 
The Moyie formation was examined over a wide area. The 
area of Moyie rocks outlined by Daly west of Kingsgate was 
found to rest conformably upon the same rocks which Daly 
3ur 
J Daly, R. A., Geol. Surv. Can.. An-s. Rept., 1904, p. 9/A. — - „ _ 
2 Daly, R. A., Geol. Surv. Can., Memoir 38, 1913, p. 4+9-. 
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