125

mouth of Kiskatinaw river. From here to the bend at Montagneuse river the
structure is flat. The section is east-west to this point. From the mouth of
Montagneuse river southward a north-south section is cut and here a small south
dip is revealed. Where the river turns east past Dunvegan an east-west section
is again exposed and flat structure indicated. Beyond the mouth of Burnt river,
the Peace turns to the northeast and so continues to Peace river. Here the strata
rise downstream and the inclination near Peace river amounts to some 40 feet
per mile to the south.

“From Peace river northward a north-south section is exposed and at first
reveals a south dip of about 10 feet per mile. In the vicinity of the No. 2 well
and extending to Tar island the structure is practically flat, although there is
probably a slight rise of 1 or 2 feet per mile. Downstream from here there is a
slight dip north of a few feet per mile to a point about:10 miles below the mouth
of Cadotte river. Beyond this there is a gentle rise, and a final flattening out.
The above structure applies to that. observed above river-level. It is possible,
however, owing to the thinning of the Loon River shales northward and the
consequent rise of the limestone contact, that the lower strata below river-level.,
which would be reached by drilling, would be slightly tilted southward as com-
pared with the overlying strata above river-level. This applies particularly to
the section north of Tar island.” i

POTASH

Considerable interest has been manifested in the possible occurrence of
potash in commercial quantities in the Mackenzie basin. The analyses of samples
taken from brine springs and from waters rising from strata pierced in boring
operations, as given an pages 126 and 127, are disappointing in this regard. The
proportion of potassium is too small to be of commercial importance or to be
indicative of the presence of beds of potassium minerals. Analyses of a sample
of water rising from a depth of 268 feet, in a bore-hole put down at Vermilion
chutes on Peace river, and of a sample taken from a natural spring at Sulphur
point on the south shore of Great Slave lake, are equally disappointing.?

SALT

Numerous brine springs are found in the Mackenzie basin, from some of
which salt is obtained for local consumption.

Rock salt or salt-bearing formation was reported to have been encountered
in Paleozoic strata in two wells sunk by the Northern Alberta Exploration Com-
pany on Horse creek near McMurray. As the wells are only 155 feet apart there
is a strange lack of agreement between the logs.”

Well No. 1 - Well No. 2
Feet Feet
Loose surface material...........-0- esse eee ‘ Vee Ly! (es 94
PRIMROSUODE 5). 55. cin ce ee eee a ie ee i i ALG 24— 1234
Soapstone and limestone........ Meee he ete ence 117— 5210 124— 590
SPINE 9) oe BSS oes IRE ea 6 Cid OG sa tee A oe oe OHO OG ¢ 520— 620 590~ 690
A IWICRLOMNG @ 5 c0e1e Goose .3 aces ee renege ee = on eae ‘ 620-— 635 690- 765
SO] Ee Sees Ps pee Puce a re ee ieee a Serena: 635— 740 765— 855
EAIMESEOHC a c's «o's 2 oicie eer BS hee Seeks bie woo OS ‘ 740— 770 S55— 935
Se SEONG 4 00s 1s Slat cc orate caanhs Ss ooase fete er ie ce : 770-1,475 9:35-1,406

1Camsell, C., Geol. Surv., Can., Sum. Rept., 1916.

2Mineg Branch, Dept. of Mines, Can., ‘Report on the salt deposits of Canada ana
the salt industry,” 1915, p. 84.

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