18 
MUSEUM BULLETIN NO. 8. 
intervenes between the quartzite and limestone in Bruce area 
is probably present also but concealed by the waters of Lake 
Huron. The lithological similarity and identical relations to 
the Killarney granite leave little doubt that the quartzite in 
Blind River area and the limestone above it are equivalents of 
the quartzite and limestone in Bruce area. 
In Whiskey Lake area, 15 miles northeast of Blind River 
area, a white quartzite 1,000 feet thick and conglomeratic near 
its base also rests unconformably upon a surface of disintegrated 
granite, probably continuous with the granite at Blind River. It 
is the basal member of a conformable series composed in as- 
cending order of conglomerate 125 feet, siliceous banded lime- 
stone 150 feet, greywacke 350 feet, impure red- weathering lime- 
stone 50-75 feet, white quartzite 1,100 feet, ctnd erosion vestiges 
of an overlying siliceous greywacke. It is quite as evident 
here as in Blind River area that the first three formations cor- 
respond in practically all respects with the first three of Bruce 
area, in addition to which there are three other formations not 
represented in Bruce and Blind River areas. 
In Espanola area there is no Killarney granite and no 
actual contact between the Huronian sediments and the older 
pre-Huronian sediments was seen; but a Huronian quartzite 
traced to within 10 feet of pre-Huronian slate was found to be 
discordant with the latter and composed of materials that sug- 
gested its derivation from disintegrated products of the under- 
lying slate. This quartzite is conglomeratic just above its base 
and is hundreds of feet thick, like the lower quartzite in 
the preceding areas. Also it is succeeded conformably by 
conglomerate, siliceous limestone, greywacke, red weathering 
impure limestone, and a thick white quartzite as in Whiskey 
Lake area. Even such details as the quartzite and conglomerate 
dykes that cut the greywacke of Whiskey Lake area are repeated 
at Espanola. Upon these grounds this series at Espanola is 
regarded as equivalent to the lower sedimentary series of Whiskey 
Lake, Blind River, and Bruce areas. 
Formations answering the same descriptions were ob- 
served in Round Lake area but have not been found in Wanapitei 
area, where the upper of the two Huronian series lies directly 
upon the pre-Huronian. 
