the west of the canyon of Wheaton Creek on lease No. 402.

This buried channel is believed to diverge from Wheaton Creek beneath the tractor-road by the head of the rock-canyon at

the north end of the Peacock lease. Secondly, the slate-ser- pentine contact cuts across Wheaton Creek on the Peacock lease. The placer on the Peacock lease may be closer to the source and consequently be richer than placer-deposits farther down- stream. The gold on the two leases is similar and evidently comes from the same source. The placer-gold north of the Pea- cock lease may have migrated down-stream and if so might indi- cate to what extent coarse gold will travel even down a low grade.

A consideration of the hypotheses advanced to explain the physiographic history and the origin and deposition of the placer-gold leads to the following conclusions.

1. The gold, on Alice Shea Creek and on the leases at the lower end of Wheaton Creek, is believed to have come from different sources. The gold on lower Wheaton Creek did not travel down-stream from a source on Alice Shea Creek. Most of the gold is believed to have come from quartz veins in the slate though some may be from lodes in serpentine or from an auriferous pegmatite or feldspathic quartz vein. Although no auriferous gravel has yet been found on the leases between No. 845 and the mouth of Alice Shea Creek, there is no assur- ance that none is there. However, there is no doubt that any gold found will be on or close to bed-rock beneath the present creeks The valley is so confined that the chance of. there being a separate auriferous channel is extremely unlikely.

2. 4& channel of interglacial age is being mined beneath creek-level on the Peacock lease. The northward extension of the channel is believed to lie buried to the west of the can- yon of Wheaton Creek on leases No. 402 and 302. The extension of the channel diverges from Wheaton Creek beneath the tractor- road at the north end of the Peacock lease. There is no assur- ance that the northward extension is auriferous even though the channel is gold-bearing on the Peacock lease. further- more, its presence is not necessarily expressed by a surface depression though indirectly it might be indicated by an alignment of kettle-holes.

3. A buried late Tertiary channel lies to the east of Wheaton Creek and extends from a point east of Wheaton's camp southward to a point 1,200 feet south of Barrington's camp.

At its northern end the channel is a dry gulley and to the south it is completely filled with glacial debris. Its whole length might be auriferous in view of the fact that the north-

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