56

Aylard Summit
H. H. Beach and J. Spivak (field notes) have collected typical fossils of
the Pardonet beds at Aylard Summit.

Halfway River Valley

A section of the Pardonet beds has been studied in the first gully at
the west end of Mount Wright (See Plate III B) on the north side of Halfway
River (McLearn, 1946A); in descending order it is as follows:

Thickness
Feet
(Approximate)

Limestone, dark grey; Monotis subcircularis Gabb............- 30
Limestone, dark grey; Monotis alaskana var..........+++++0005 40
Limestone, dark, fissile, with Halobia; siltstone, calcareous...... 100
Siltstone, calcareous; limestone, dark, shelly and_crinoidal,

fossiliferoussachictsjais sien cic BO ecu oo isis = heel neem eter 200
Siltstone, calcareous, dark; sandstone, fine, dark, calcareous;

fossiliferous sxe rcegereie a Gen scot sespate on ORate- taers sire eae One 110
Siltstone, dark, calcareous; limestone, dark, argillaceous; sand-

stone tine darkycalcareousucs sprays i ctahebyoeiesie talent ciiatens 110

The lowest 110 feet of this section may be transitional to the under-
lying ‘Grey beds’. The three succeeding zones, although fossiliferous,
contain long-ranging species, and their place in the zonal arrangement of
the Pardonet beds is unknown. The 40 feet of limestone represent the
Himavatites zone and the top 30 feet obviously belong to the Monotis
subcircularis zone.

The Pardonet beds have also been recognized on the trail just west of
Grave Creek, on the north side of the river.

The Triassic beds mapped by Hage (1944) at ‘the Notch’ on Pink
Mountain and also in Pink Mountain Pass include beds of the high Monotis
alaskana var. zone, but possibly not the highest zone of the Pardonet beds,
for Monotis subcircularis is not present in any collections from Pink Mount-
ain. Lower parts of the Pardonet beds may occur here, but have not been
recorded.

Sikanni Chief River Valley

A good Triassic section was found by Hage (1944) on Sikanni Chief
River, below the mouth of Chicken Creek. It comprises apparently all of
the Pardonet beds and the highest of the ‘Grey beds’. It has been studied
in detail by McLearn (1946A), and, in descending order, is as follows:

Thickness
Feet
(Approximate)

Siltstone, dark grey, carbonaceous, shaly, calcareous; Monolis

GLOSKONG Var eh Seen eee ea ee eee 12
Siltstone, massive, dark grey, calcareous; siltstone, shaly, cal-

careous; Monotis alaskana Smith var., Himavatites colum-

bianus  Melsearnentstni nce ee citer eee 13
Siltstone, shaly to fissile, dark, calcareous; limestone with ‘knobs’

of Halobia-bearing limestone; Monotis alaskana Smith var... 7
Limestone, hard, somewhat fissile; siltstone, calcareous; ‘knobs’

bearing Halobia shells and marine reptilian bones.......... 9