Reviews— Geological Survey of Canada. 131 
Vancouver Island (northern half) form portions of a single axis of 
elevation, which here constitutes the western member of the 
Cordillera. The similarity of the rock formations in these two 
regions is “so close as almost to amount to identity.” Their 
relations are exhibited in the table below :— 
QuEEN CHARLOTTE NortHerRN Part oF 
Isnanbs. Vancouver IsLAnp. 
= Port MeNeil beds (?). 
iba fee A. Upper shales and sand-| A. Upper shales, et 
; stones, 1500 feet. 
(|B. Coarse — conglomerates, | B. Coarse conglomerates. 
200 feet. 
'|C, Lower shales and sand-| C. Lower sandstones and 
MIDDLE stones, with coal, 5000 shales, with coal. 
CRETACEOUS. feet. 
D. Agglomerates, 3500 feet. | D. Wanting, 
K. Lower sandstones, 1000 | E. 
feet ? 
399 
In the northern part of Vancouver Island rocks of volcanic origin, 
forming portions of a stratified series of great thickness, are 
abundant. They include, besides the volcanic materials, argillites 
and limestones, holding Triassic fossils. These volcanic rocks are 
classed as diabases and felsites, with occasional examples of diorite. 
Associated with the volcanic rocks are limestones, argillites and 
quartzites, which have been recognized at a number of places, from 
the northern part of the Strait of Georgia, round the northern end of 
Vancouver Island, and in Quatsino Sound. This intercalated zone 
is at one place on the north coast of Vancouver Island estimated to be 
2500 feet thick. As no complete section of the volcanic rocks with 
the alternating sedimentary materials could be made out, reeourse 
was had to the fossils contained in the latter for determining the age 
of the whole series, which was found to be that of the Alpine Trias. 
The fossils upon which this determination was arrived at belonged 
to the following species:—Monotis subcircularis, Gabb, Halobia 
(Daonella) Lommelli, Wissmann; Aulacoceras Carlottense, n. Sp. ; 
Arcestes Gabbi, Meek; Celtites (?) Vancowverensis, n. sp. The 
descriptions of these species, by Mr. J. F. Whiteaves, are contained 
in Appendix I. to Dr. Dawson’s report. For the entire series Dr. 
Dawson proposes the name Vancouver Series, including under this 
designation “not only the entire mass of volcanic materials which 
unconformably underlie the Cretaceous, but also the interbedded 
limestones and flaggy argillites and quartzites.” The series is 
intended also to include “the similar beds of the Queen Charlotte 
Islands, as well as those of the southern part of Vancouver Island, 
to which it was originally applied by Dr. Selwyn in 1871.” 
The Vancouver Series, which are the oldest beds of the district 
described, are in contact with, or rest upon granitic rocks of later 
