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which masks bed-rock in the valley-bottom and extends far up
the valley-sides. In general the boulder-clay is thin, though
one 50-foot bank on Wheaton Creek, lies above a rock bench cor-
related with the upper bench-level. The bottom of the Turn-
again valley is filled with glacial drift, which must be great-
er in depth than the 65-foot sounding in one of the kettle-hole
lakes. The boulder-clay and glacial drift are unweathered,
they cover most of the other glacial material, and presumably
were deposited at the time of the last ice advance.

Bed-rock beneath Wheaton Creek on the Peacock lease
(No. 345) is shown by Barrington's drag-line cut to be over-
lain by 4 to 6 feet of flat-lying, thinly-bedded, buff clay.
The clay in turn is overlain by 10 to 20 feet of grey to buff
unsorted clayey gravel. Some boulders in the gravel are as
much as 10 feet in diameter. A few feet of fairly clean,
rudely-sorted sand and gravel lie on top. This latter mater-
ial was probably laid down by the present creek. The underly-
ing fluvio-glacial clay and clayey gravel, because of their
composition and their position below the lowest boulder-clay,
are believed to be interglacial. There is, however, no boul-
der-clay that records an early ice advance.

Up-stream from Barrington's camp, F. Bobner sank a 26-
foot shaft in the bottom of the creek on lease No. 336. The
shaft was abandoned before bed-rock was reached. The mater-
ial in the shaft is clean sand and gravel containing many
boulders foreign to Wheaton Creek valley. No boulders encoun-
tered were more than 2 to 3 feet across. The gravel is be-
jieved to bes interglacial.

Another shaft was sunk in the bottom of Wheaton Creek
opposite Faherty's cabin on lease No. 360. From the bottom
of the 12-foot shaft a drill-hole was put down to a depth of
$1 feet. Jt is reported that.bed-rock was not reached. At
this point, Wheaton Creek again is shown to be flowing over a
gravel-fill which presumably is interglacial.

The various rock bench remnants along Wheaton Creek are
covered with glacial boulder-clay or with sand, clay, or grav-
el laid down during the post-glacial down-cutting of the pres-
ent creek.

Other benches at elevations: above the rock bench remnants
are composed of unconsolidated material which just below the
surface is seen to be sand or sandy gravel but there is no
indication of the composition of the bulk of the underlying
material. The position of the benches indicates that they are
late glacial or post-glacial. Inasmuch as the benches do not

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