1907-8.] THE GEOLOGY OF THE LAKE WENDIGOKAN REGION. 341 
THE GEOLOGY OF THE LAKE WENDIGOKAN REGION. 
By Exnwoop S. Moors, M.A. 
During the summer of 1906 I had the privilege of conducting a geo- 
logical exploration of the Lake Wendigokan Region. The work was done 
in the interests of the Bureau of Mines of Ontario, and under the direction 
of T. W. Gibson, Deputy Minister of Mines; the object in making the 
exploration being to secure a report upon the iron deposits occurring in 
that field. Prior to that time no detailed work had been done in the 
district, and I therefore submit this paper as one embodying the results 
of some original investigations in the Science of Geology. 
Although no detailed work had been done in the region, J. W. Bain 
calls attention to its iron ranges in a short article* on the iron ranges of 
the Nipigon region, Dr. W. A. Parks mapped it on a large scale, and briefly 
described it in his summary report for the Canadian Geological Survey,t 
and prospectors, chiefly those of the Algoma Commercial Company, had 
located mining claims there. Dr. Parks’ map was very serviceable as a 
guide, and the map of the Algoma Commercial Company’s surveyed 
claims proved very valuable when fixing the geology in the field. 
I should appear very ungrateful if I were to neglect to acknowledge, 
during the preparation of this paper, the efficient services of my classmate, 
Mr. T. L. Goldie, B.A., who acted at topographer during the field season, 
or fail to express my indebtedness to Dr. A. P. Coleman for his many 
valuable suggestions in regard to this subject and the generous interest 
he has shown in my work. 
THE GEOGRAPHICAL POSITION AND EXTENT OF THE REGION. 
The major part of this discussion is confined to the area indicated 
on the accompanying map. ‘This area is about twelve miles in length by 
five in width, and includes Lake Wendigokan, a fine blue lake dotted 
with evergreen islands, and lying among hills of green schist and drift. 
Its position is about ten miles from the mouth of the Sturgeon River, 
which enters Lake Nipigon near the centre of its east shore, and to reach 
* Report of the Bureau of Mines, rgor. 
+ Report of the Canadian Geological Survey, 1901. 
