The Cretaceous which underlies the Canadian plains is so nearly undisturbed that no great difficulty has been experienced in tracing over large areas the different horizons found. Near approach to the Rocky mountains is, however, accompanied by serious foldings in the strata, so that the foothill region requires detailed study before the formations can be accurately mapped. The discovery of coal at several horizons renders this folded area of interest on account of the many chances that the lower horizons bearing the best grade of coal may there outcrop.

The reported discoveries of petroleum in the southern portion of Alberta were given great publicity and the producing fields of Colorado were cited as examples of what might be expected at almost any point along the front of the Rocky mountains. The desirability of a study of this region is thus quite evident, and last season one party was located . . .

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