8 9 



mountains, near Banff. A thickness of over 6,000 feet 

 (1,824 m -) f° r the formation has been observed in the 

 Bow valley. 



PERMIAN AND TRIASSIC. 



At the top of the limestone series in the Rocky moun- 

 tains, a series of quartzites overlaid by red shales may 

 be in part Carboniferous, but as the series is conformable 

 to the Jurassic, some deposition should be credited to Per- 

 mian and Triassic. The red shales are occasionally capped 

 by a thin band of yellowish dolomite, and often the series, 

 on fresh exposures, shows yellow bands in the shales. 

 Evidences of a Triassic age for the upper shales have been 

 found in shells of Monotis type. These are recorded at 

 Blairmore in the south and on branches of Brazeau river. 

 Northward Triassic fossils have been found in Pine and 

 Peace river valleys. 



JURASSIC. 



Fernie shale — In the locality where this formation 

 received its name, Fernie, B.C., it consists of a series of 

 black and brownish shales 1,060 feet (323 m.) in thickness 

 overlying 500 feet (152 m.) of sandy argililtes. Eastward 

 the series decreases in thickness. On the Cascade river 

 the section is 1,600 feet (487 m.) and consists of black 

 shales and grey sandstones with an occasional limestone 

 bed toward the base. In the Moose Mountain area — an 

 outlier of the Rocky mountains — the thickness is about 

 225 feet (68-5 m.). The formation has been traced 

 northward to Athabaska river and preserves its general 

 black, shaly appearance. Few fossils have been obtained 

 in these measures, but they are characteristic: — Cardioceras 

 canadense, Peltoceras occidentale, Terebratula robusta, Ostrea 

 skidegatensis , Exogyra sp., Lima perobliqua, Pteria corneui- 

 liana, Trigonoarca tumida, Trigonia dawsoni, Astarte car- 

 lottensis, Protocardia hillana, Cyprina occidentalis , Pleuro- 

 tonomya carlottensis, Schlcenbachia borealis , S. gracilis. 



CRETACEOUS. 



Kootenay. — The lower member of this series of depo- 

 sits is found resting upon the Jurassic in the Rocky moun- 

 tains. In Manitoba it has not been recognized, and is 



