-ll-

Shale containing three bentonite beds 1 to 6 inches
‘ J CHUCK oe vee c creer eeeecssccccereesressorssaces 25
Dark grey, chunky shale with numerous ironstone

QOUO Ror Coe re cma marcnssttcct crs Muptcicten ses ott. oe 4

ae dont Total ae 1500
The total (ete eee cs of the Semetton as. Berinaeed CC Omer
be between 3,300 and - 3,600 foet. Ray

Very: few esduie were observed in the Buckinghorse. eh
formation. Neogastroplites and a large Inoceramus were found on~
Indian Creek, east of mile 182, in shale that is believed to oan
the upper part of the formation. On this basis (eLearn, He) the
Buckinghorse is of Lower Cretaceous age.

Sikanni Pomnacion' Sikemi is a proceed new forma tional
name for the assemblage of beds that lie between the Buckinghorse
and Dunvegan formations. It is composed of a lower part about 380
feet thick consisting of four.sandstone members separated by shale,
and an upper part believedto be largely shale though observations
were limited.to a few outcrops. As the contact with the overlying
Dunvegan was not observed, the actual: thickness of the upper part
of the formation is not known, but. an, estimate: of 600. feet is be-
lieved. to be a fair approximation. . The total shlginsss of ee
forme tion: is, ner On Cres about 980, feet.. in iass

The lower, part of the’ istiaand | is well exposed. aie
Sikarind Chief River at: and below the Highwaly bridge; along Bucking-
horse River; and along. the west side of wide BearD beeween et aoe
and mile 152. pin : ae

; t ae representative. section 2 miles. cast of. the Silzinnd
Chief Ha eave y Cage ae as follows: ea 2
; hash ha ei Mi naeh th Thickness,

Pop of Section ety eens Feet .-

Shale, dark ECV eeseseeessaseeesensersasaeenseeees ?

. Fourth sandstone member; fine-grained; grey,’ ae

bedded and banded; small carbonaceous frap- :
ments along. DEddING se secerereccccencesiccvionse at.

/ Shale, dark grey, bedded; with a few scattéred - pies det

ae ~ ironstone ; COonersbions.¢.rsesssscscesceseteer 44.03.
Third sandstone member: fine-grained, preys co et rat

banded ; inverbedded’ with minor amount | ‘of shale :46

‘s. Shale, dark grey and sandy ; a few ironstone cone 2"

a Cre tLons mueiecgtec esas ememeraes tuscc se ciiee ste Ml.
Conglomerate ; black, Ghent PeHDLOsue eases sclerclesisie « 065:
Second sandstone member: fine- to medium-grained, 8

grey, bedded and banded. cccccoccvevsecsevece Te
Shale, dark grey, banded and poorly bedded; |
contains ironstone: CONGLELIONS lersicie ci tieesieieie ole 65
First) sandstone member: fine-grained, grey, 9 ih
. .erossbedded, PARAS e eae tee resesesecereerenes 35

eas |” 880.5

+ The banded: and bedded character of the sandstone is
characteristic of the various members. The. thin chert-pebble
conglomerate on top of the second. sandstone member was observed
at mile 152 and at: ‘several places along Sikanni Chief River, and
‘is a‘useful horizon marker. The. lower part of the formation is of
uniform charactersfor a distance. of 60 miles from the "Elbow" on
Halfway River east of Pink Mountain to Prophet River. — .