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He realized with a quiver of dismay that he had mistaken a huge drift-filled fissure, between a jutting crag and the wall of the ridge, for the solid, snow-covered ground. He tossed his arms about wildly in his effort to grasp something firm. The motion only dislodged the drift. He felt that it was falling, and he was going down down down with it.
Several ancient drift-filled channels on Thibert Creek, blue at bed rock, were exposed and had been worked. A considerable portion of the gold, though mostly coarse, had no doubt come from considerable distances, as boulders included in some of the deposits show. The deepest beds, though known to be rich, had not yet been worked to any great depth on account of expense.
In such cases it is possible that the river was pushed to one side of its former valley by a lobe of ice, and compelled to cut a new channel in the adjacent uplands. A section of the valley may have been blockaded with morainic waste, and the lake formed behind the barrier may have found outlet over the country to one side of the ancient drift-filled valley.
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