19

planes. The northern half of the eastern contact, however, is concordant
or nearly so with the strike and dip of the adjacent sediments.

The western half of the body has not the typical green colour, but in
many places both the medium- and coarse-grained types of amphibolite
are easily recognized. There is more sedimentary matter in the western
than in the eastern part, one band of sediments is several hundred feet
wide and may be several miles long. The sediments are mainly quartzites
or argillaceous quartzites, but may have been rendered more siliceous than
they were originally by silicification. A limestone bed 100 feet or more
thick occurs in the band of sediments and is well exposed at Swamp point
where limestone was once quarried for flux.

In several places within the Anyox amphibolite body local areas a
few hundred yards across appear to consist mainly of green amphibolite
lavas showing a rude pillow structure. In one place near the centre of the
Anyox body there is a thin band of rhyolite. The main body is probably
intrusive containing older rocks as inclusions and roof pendants, and con-
taining locally also some extrusive facies of the parent rock. Judging
from the highly silicified character of some inclusions and from the silici-
fication locally exhibited by sediments along the eastern contact, it appears
that the amphibolite had a greater effect on the intruded rocks than is
usually exhibited by the other similar intrusives of Portland Canal area.

A small, isolated body of amphibolite occurs south of Bonanza creek.
It intrudes the surrounding sediments, but the contacts are in the main
parallel to the strikes and dips of the sediments. On Glacier creek it can
be seen that this body in part transgresses the sediments and in part is
sill-like. It is probably an injection from the main body to the west.
A few miles farther south is a third body of amphibolite several miles
long.

A body of igneous rock outcrops at the head of Hastings arm. It is
3 miles long and 2 miles wide and is enclosed by Coast Range intrusives.
The rock is mainly a breccia containing fragments of a holocrystalline
rock resembling fine-grained diorite. Epidote is very plentiful throughout
the rock, particularly between fragments and in short and narrow gash
veins. The rock is quite unlike any other members of the igneous rocks
of the Hazelton group seen in Portland Canal area except for a somewhat
similar type on Portland canal immediately south of Bulldog creek.
Except for its brecciated nature the rock resembles some facies of the
Coast Range intrusives. It has been mapped as part of the Hazelton
group as it is very unlike the surrounding granites and has been intruded
by them. Minor quantities of argillaceous sediments with a general north-
erly strike and westerly dip occur in the body. They are probably inter-
bedded with fragmental volcanic rocks.

A body of igneous rock i2 miles long and 10 miles wide occurs in
Georgia River district on Portland canal. It is surrounded by Coast Range
intrusives but is only 2 miles distant from the western part of the igneous
rocks of the Kitsault body. The Georgia River body consists for the
most part of a crystalline rock probably of intrusive nature, but frag-
mental volcanic rocks and sediments are also present. Though the out-
lines of the body are roughly known but little is known of the various