ee Bi, oR WP Pea 4 =
rounded surfaces of the cldcz rocks. Somo black. cone-shaped

mountains such as secur

souch of Babine lake neer the Burns

Lake road may also be “ertiarv.

Between Hutchiscn and Mizro

excGNsive

areas, mainly of shales with somo

o

: 1
which Dawson— described as Wecheiro series and considsred to be
ar

— Dawson, G.M.: Exploration in British Columbia; Geol. Surv.
Canada, Ann, Rept. 1874~75.

ren ere

late Mesozoic. However, the general features suggest a greater
resemblance to Tertiary rocks, The shales, commoniy srey, in
places are red, yellow, and white, probably due to alteration.
Some of the beds, judging from descriptions, way be rhyolitic
tuffs like those in the late Hocene or Oligocene rocks. The
strata are considerably deformed and are cut by dark coloured
(basaltic? or andesitic?) intrusives.

Schists, quartzites, siates, ohyllites, and gneiss,
probably mainly Palaeozoic, occur in scattered areas throughout
the eastern half of the Plateau belt, Limestone, probaniy of
late Palaeozoic age, occurs east of Wedgewood on the railway.

A group of volcanics overlies the Palacozoic rocks in many
patches in the eastern haif of the belt and is fairly extensive
in the western half. The volcanics are lergely massive and
commonly dark green. Rarely they are ercy, red, purple, and
other colours. They are probably Triassic or possibly Jurassic.
They very likely occupy most of the arge eres extend.ag south
from the railway between Decker lake end Savory, broadening to
include most of the south shore of Frangois lakes-* There are
probably numerous small areas in the section between the railway
and Babine lake such as occur at Poison creek and in the vicinity
of Taltapin mountain. A younger group of volcanics described by

Hanson and Phemister2 as lying unconformably on grenitic

TT

2 Hanson, George, and Phemister, T.0-: Qopley Map Areas Geol.
: C a - \ ~ Ly
Surv. Canada, Sum. Rept, 1928, pt. A, Dp. 90.

(irae es See