97

“The above assemblage although small is made up of species common
in the Kootenay of Alberta, and the beds are considered to be equivalent
in age.”

On the south side of Glacier Gulch development work has disclosed
the presence of about twenty coal seams at irregular intervals throughout
a 600-foot column of stratified rock. The total thickness of the formation
as exposed on this side of the gulch is a little over 1,000 feet, and the coal
is confined to the lower 609 feet. The greater number of the coal seams
range from 6 to 12 inches in width, but there are two seams with widths
up to 4 feet and two others with widths of 18 inches and 24 inches, respec-
tively. There has been considerable fault movement along many of the
coal beds with resultant pulverization and squeezing of the coal, so that
these seams are in many places found to pinch suddenly along their strike.
A strong fault contact between the sedimentary series and the older
underlying voleanics and sediments of Jurassic age is exposed on both
sides of Glacier Gulch immediately below the coal seams. The fault line
strikes northwesterly and dips to the northeast at angles varying from
45 to 70 degrees.

On the north side of Glacier Gulch there are four small coal seams
within 100 feet of the contact of the sedimentary series and the older
voleanic rocks. The fault contact between the two formations strikes
northwest and dips from 60 to 70 degrees northeast. It is marked by a
narrow ravine with walls rising steeply for 50 to 100 feet. The hard,
volcanic rocks along the foot-wall side are slickensided and grooved with
fault striae. At elevation 2,950 feet a 25-foot shaft is sunk on a small
silver-lead-zine vein 20 feet southwest of the contact in the volcanics.
Opposite the shaft and 20 feet northeast of the fault contact there is a
12-inch and an 8-inch coal seam separated by 16 inches of shale. A 12-
inch and a 24-inch coal seam outcrop on a steep slope 60 and 100 feet,
respectively, farther east. These coal seams have not been prospected.

On the south side of Glacier Gulch (See Figure 11) the main adit
at elevation 2,450 feet is driven south as a crosscut for 475 feet to a drift
on two coal seams. In the roof of the drift at the crosscut, a 28-inch coal
seam is separated from a 9-inch coal seam by 27 inches of carbonaceous
sandstone. The larger seam is sheared and thins eastward along its strike.
At the face of the east drift, 185 feet easterly from the main crosscut,
the larger seam has thinned out to 8 inches of soft, dirty coal with 8 inches
of sandstone separating it from the parallel seam, which consists of 6 inches
of soft, sheared coal. The drift to the west follows these two seams for
133 feet and then passes through 90 feet of loose slide rock to emerge as
an air adit at the surface, 20 feet above the adit level. At 85 feet west
along the drift from the crosscut the main seam is 17 inches thick, and
15 inches of shale separates it from the parallel seam, which is 12 inches
thick. A small amount of stoping has been done on these two seams above
the end of the main crosscut. In the main raise 30 feet above the drift
level, the larger seam is 4 feet wide and the parallel seam 10 inches wide,
with 30 inches of shale between them. The 10-inch seam consists of firm,
dull black coal, whereas the larger seam is a soft, dirty, sheared coal.