121

The coal seams at this locality are not far above the under-
lying volcanic rocks, and it is probable that this relationship is
due to faulting, as elsewhere the coal occurs well above the base
of the Haida formation. In appearance the coal found on the
dumps is a semi-anthracite, and it seems quite unaffected
by its forty years’ exposure to the atmosphere. Analyses are
quoted on page 126.

A coal seam was seen by the writer on King creek, about a
quarter of a mile northeast of the openings on Hooper creek.
The seam is not well exposed. It dips at a high angle, and is
directly on the line of strike of the coal horizon between Hooper
and Slatechuck creeks. The coal is anthracitic in appearance
and the seam is fairly clean. It is at least 5 feet thick, and over
500 feet above the base of the measures. This seam is either a
continuation of one of the Hooper CreekorSlatechuck seams, or is
another seam lying at or near the same horizon.

Slatechuck Creek.

In the Slatechuck valley two exposures of the coal, which
there also is anthracitic, have been prospected. On Coal creek,
a small tributary of the Slatechuck from the west, the coal
is exposed in the stream bed about half a mile above the junction
of the creeks. At that point an adit has been driven for 757 feet
across the measures by the British Pacific Coal Company. A
number of specimens of the coal were collected from the dump
in front of this opening, but the adit, on account of its gassy
condition, was not examined. Clapp states! that three seams of
over a foot in thickness, called the A, B, and C seams, were en-
countered in the adit. The A seam is nearest to the entrance and
apparently the lowest, but this apparent position is probably due
to over-folding, as the base of the measures is reached on Coal
creek in the same general direction as the adit. To quote Clapp:
“The seams are associated with slaty shales, usually carbon-
aceous, intrusive into which are at least two sills of altered dacite
porphyrite. The sills do not appear to have broken across the
bedding, and may have been folded with the shales. In the

1Clapp, C. H., Geol. Surv., Can., Sum. Rept., 1912.