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ledge just west of the Jewitt fault, above a terrace, and above the pack-
trail. Below it are grey limestones and calcareous siltstones with Pecten?
dishinni, and above it are grey limestones and calcareous, very fine sand-
stone with the diagnostic ‘T'erebratula’ cf. julica Bittner and Lima? poyana
of the poyana faunal zone. Higher, are mostly barren grey limestone,
calcareous siltstones, and calcareous, fine sandstones at the top of the
‘Grey beds’. These pass gradually into the dark, more carbonaceous, and
finer strata of the Pardonet beds (McLearn, 1941B).

The Lima? poyana zone of the higher part of the ‘Grey beds’ is exposed
on the steep, southern slopes of the Dry Canyon shoulder. McLearn
(1941B) records grey, calcareous, fine sandstone with Lingula, overlain by
grey limestone and calcareous siltstone with species of the L.? poyana
fauna. These are in turn suceeded by the ‘coquina’ limestone, grey
limestone, grey, calcareous siltstone, and grey, calcareous sandstone, with
species of Myophoria and Pecten typical of the L.? poyana fauna.

A section of the ‘Grey beds’ has been studied on the north side of
Peace River Valley, west of Schooler Creek. It is not all exposed, however,
and only parts of it can be observed and described. The lowest exposed
beds are seen on Mahaffy Creek, a small stream that crosses the low flat
between Mahaffy Cliffs and the bank of Peace River (See Figure 8). Here
are low exposures of grey, calcareous, fine sandstone and grey limestone with
shells of the Nathorstites fauna. Higher, both in elevation and strati-
graphically, in the steep ledges of the Mahaffy Cliffs, are fine, calcareous
sandstone, calcareous siltstone, grey, greenish grey, buff, and yellowish
weathering, impure limestone, and very rare, calcareous, coarse sandstone,
all containing specimens of pelecypods belonging to what has been called
the Mahaffy Cliffs fauna (McLearn, 1941B). Towards Kerr Spur and the
mouth of Schooler Creek, the southeast dip carries the beds with the
Mahaffy cliffs fauna below river level, and higher beds of the poyana zone
are exposed on the south slopes of Kerr Spur (See Figure 8). Here are
ledges of fine, calcareous, grey sandstone, calcareous siltstone, and grey
Gai with a few fossils characteristic of the L.? poyana zone (McLearn,
1941B).

Farther west, the ‘Grey beds’ are well exposed on Brown Hill (See
Plate V A), on part of the west spur and on all of the east spur (See Figure
8). A section studied by McLearn is, in descending order, as follows:

Thickness
Feet
; (Estimated)
Overlying Pardonet beds on west spur
Limestone, grey; sandstone, fine, calcareous; siltstone, calcareous;
with a few fossils, apparently of the L.? poyana zone; meas-

urement includes some concealed beds.................--. 200
Sandstone, coarse, massive, barren................00.0ee0eeee 200
Sandstone, calcareous, fine; siltstone, calcareous; grey limestone;

measurement includes concealed beds..................-. 450
Sandstone, fine, calcareous; limestone, grey; siltstone, calcareous;

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