






























‘Small Promontory, and distant about a'mile and a half from it. This be to 
runs north-westward for some time pretty nearly parallel to the main 
‘minutely acicular. Half'a mile still further west a similar rock is seen, but. 
rocks is found forming the north-western shore of the lake for a long dis- — 
B. N. A. BOUNDARY COMMISSION. © 
what abnormal dip of 8. 25° W., and was nearly vertical. Aboutsix r m iles 
westward, what I believe to be the same bed, appears as a soft fine-grai ed 
micaceous schist, brownish in colour and thinly cleavable. Dip S. 30° F Ez 
GABP 4s, i a 
76. The next band, which is composed of conglomerates and similar " ri 
hard rocks, seems to be the cause of the point immediately north of th ai 








shore, “forming an interrupted chain of large and bold islands. At the point a , 
just mentioned, the rock is greenish and spotted, dip S. 23° E. < 60°. 
Half a mile further westward a hard greenish-black hornblendic rock 
occurs, which, though it may be a contemporaneous diorite, shows spots 
which are apparently remains of pebbles. The hornblende crystals are — 


silica now so much preponderates that it might be called a hornblendic | 
quartzite. Three miles westward from the point, the rock is a true a $5 a ” 
stone conglomerate,’’ much disturbed, and showing a local strike of N. 
10° E. Six and a half miles northward and westward from the same- 
place, the rock is again a typical greenstone conglomerate, hard and con- — 
siderably altered and contorted, but with a general strike of N. 43° W. | 
In one place a polished and glaciated horizontal section, shows what ap- 
pears to be the nose of a compressed synclinal fold; a thin layer of conglo- 
mexate imbedded in compact greenish altered rock, being bent round at a 
very acute angle. The inner side is quite rough and irregular in out- 
line, as though representing the former upper surface of the brecciated 
material. A mile further north-westward, the rock is a hard, spotted, 
highly altered conglomerate, or greenstone. For about two miles, stillin _ Pi 
the same direction, greenstone conglomerate continues, with fragments — 
larger or smaller, and often weathering rough superficially. At the ex- 
treme northern edge of the belt, the rock is hard, green, altered, con- 
torted, and of spotted appearance, but gives an approximate strike of _ 
N. 57° E iz 
rue North of the belt just described, an extensive series of schistose 
+ ell = 
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toe Seer see Eo 
ge FS tee : 
Pf a 
tance. Many of these are softer and less altered than any yet described, 
but are locally hardened by the occurrence of several minor masses of in- 
trusive rock. The rocks belonging to this series, probably form the shores 
of the greater part of the second large bay north of the Small Promontory, 
though they were not actually observed there. Five miles north-westward 
