. The Yukon Territory, its history and resources . more. The deposit increases in volume descending the stream,and attains its greatest development near their mouths. The white compact gravel deposit described above is over-laid in places by loosely stratified gravels known as the yellowgravels. The latter are of a rusty colour, are more distinctlystratified than the white gravels, and consist mainly of flatschist pebbles lying loosely in a coarse sandy matrix. Quartzpebbles and boulders are also present, but are much lessabundant than in the white gravels. These upper gravels are not so widel
. The Yukon Territory, its history and resources . more. The deposit increases in volume descending the stream,and attains its greatest development near their mouths. The white compact gravel deposit described above is over-laid in places by loosely stratified gravels known as the yellowgravels. The latter are of a rusty colour, are more distinctlystratified than the white gravels, and consist mainly of flatschist pebbles lying loosely in a coarse sandy matrix. Quartzpebbles and boulders are also present, but are much lessabundant than in the white gravels. These upper gravels are not so widely distributed as thewliite gravels, but are present on several of the Bonanza hillsand at points along Hunker creek. At Gold hill, on Bonanzacreek, the white gravels occur as a buried ridge bordering the])rcsent valley, and the depression between them and thesouthern slope of the old valley is filled with yellow gravelsto a depth of 115 feet. The same relationship between the twodeposits obtains at Adams liill, and |)i-(iltnl»ly at other places,. XI u Q 2 o MINING 43 but is only determinable Avbere sliafts bave been sunk to bed-rock across the whole width of the old valley. Unlike the creek gravels, the white channel fjravels aredestitute, or nearly so, of vegetable or animal remains. Xonewere found by the writer, and the few reported discoveries offragments of wood and bone by miners are all open to ques-tion. On Dominion creek and its tributaries, Sulphur and GoldItun creeks, white gravels, almost identical in character withthe high-level white channel gravels of Bonanza and Hunkercreeks, occur in the bottoms of the valleys underlying thepresent stream gravels. Their low position is due to the factthat the present valley of Dominion creek corresponds, not tothe present valley of Bonanza and Hunker creeks, but to theold valleys cut through by them. (McConnell.) During the summer of 1906 it was reported that gold wascontained in the pebbles and boulders of the white channel,wh
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