40 Prats ITI. A. Interbedded fine-grained tuffs and tuff-conglomerates in a cut on the Grand Trunk Pacific railway, north of Beament station. (Page 4.) Sediments | Granodiorite | | | | B. Sharp contact of the sediments with the granodiorite on the ridge between the head of Juniper creek and the head of Balsam creek, Rocher Déboulé moun- tains. (Page 5.)