HURONIAN FORMATIONS, TIMISKAMING REGION. 
23 
pitei area the conglomerate is the basal member of the series 
and rests directly upon the pre-Hujrn.nian. Such is also the case 
in Espanola area, except that the conglomerate lies unconform- 
ably upon the lower Huronian series instead of the pre-Huronian. 
In Whiskey Lake area the boulder conglomerate is again uncon- 
formably upon the lower Huronian series, but while the main 
part is a typical unassorted and unstratified bouldery deposit 
like that at Wanapitei, the lowermost 100 or 150 feet is made 
up of well stratified, well assorted conglomerate beds alternating 
with beds of coarse quartzite, as if this portion had been laid 
down in water. At Blind River the boulder conglomerate is 
underlain conformably by 500 feet of white quartzite and 100 
-125 feet of coarse conglomerate before the unconformity 
between it and the lower Huronian series is reached. The 
quartzite and conglomerate resemble ordinary water-laid deposits, 
so that apparently in this locality 600 feet of gravel and sand 
now represented by these formations, were laid down in a lake 
or sea before the deposition of the slate conglomerate group 
began. I A Bruce area the same conditions existed, and pre- 
sumably for a longer time, for there is 600-800 feet of quartzite 
and 50-12^ feet of conglomerate between the slate conglomerate 
and the bottom of the upper series. 
The most complete succession of the upper Huronian series, 
that obtained in and near Bruce area, is as follows: — 
White quartzite (of Logan)? 400 feet 
Yellow chert and limestone (of Logan) ? . . . 200 “ 
White quartzite (of Logan)? 1500 " 
Banded cherty quartzite 700 “ 
White quartzite, jasper conglomerate, 
and red quartzite (Lorrain quartzite05500 — 6000 “ 
Slate conglomerate group 2600 — 3000 “ 
White quartzite (Aberdeen quartzite* *) . . 600 — 800 “ 
Basal conglomerate (Aberdeen con- 
glomerate*) 50 — 125 “ 
11550—12725 feet. 
^ W. G. Miller, Fourteenth Ann. Rep. Bureau of Mines, Ontario, part II. 
* New names. 
