296 G. S. Hume — Stratigraphy and Geological Relations 



Latchford and Gillies. Various other lakes, including a 

 line along the Matabitchuan river from the point where it 

 enters Lake Timiskaming close to the outlet of the Mon- 

 treal river, are parallel to this system. 



The other system includes many lakes with longer axes 

 in the north and south direction, and is best illustrated by 

 the north and south part of Lake Timiskaming for about 

 10 miles north of the mouth of the Montreal river. 



In the northern end of Lake Timiskaming it can be 

 shown that the northwest and southeast system is con- 

 ditioned by a large fault along the western shore of the 

 lake, and the northeast and southwest system by warping, 

 if not faulting. No definite information is available as to 

 the north and south lines other than that which is sug- 

 gested by their relationships to the other two systems. 



Local evidence of faulting. — In regard to the northwest 

 and southeast system of fracturing, a study of the Pale- 





Fig. 2. — Section east and west through New Liskeard 



Horizontal scale 2 miles = 1 inch 

 Vertical scale 800 feet = 1 inch 



L, Loekport formation. \ Q ., . 

 W, Wabi formation. \ binman - 



T, Haileybury formation — Ordovician. 

 P, Precambrian. 



ozoic rocks has revealed the presence of a fault which is 

 responsible for the straight western shore of Lake Timis- 

 kaming, and a fault-line scarp extending about 18 miles 

 northwest from the head of the lake. The thickness of the 

 various formations involved along this fault shows the 

 displacement to be from 800 to 1000 feet, with the down- 

 throw side to the east. The rocks on the eastern side of 

 the fault are Silurian, with a westward dip, and near the 

 fault at New Liskeard station a well boring has shown 

 that they are covered by post-glacial deposits over 240 

 feet thick (see fig. 2). At an elevation of over 250 feet 

 higher, on the west side of the fault, Ordovician occurs in 

 flat-lying beds, while on the fault-line scarp itself, Silurian 

 strata outcrop at various places, with beds tilted over 50° 



