236 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 75 



been identified by its contained fossils in the Beaverfoot Range, 

 both adjoining the Kicking Horse Canyon and to the south in the 

 continuing Brisco and Stanford Ranges. 



3. The limestones west of the Kootenay fault identified by Allan as 

 Goodsir on the northeast slope of the Beaverfoot Range and beneath 

 the Glenogle grai)tolite shales prove to be of Ozarkian (Mons) age 

 and their contained fossils belong far above the Goodsir formation 

 fauna as now known. In fact, two or more geological formations 

 occur elsewhere between the horizon of the Goodsir Honsia fauna 

 and the Mons fauna. 



These three discoveries render the correlation of the lowei Goodsir 

 and Mons formations of doubtful value in either the Ottertail Range 

 or the Beaverfoot-Brisco-Stanford Range. The typical Goodsir was a 

 relatively local deposit of siliceous, argillaceous, and calcareous muds 

 that had a limited east and west distribution with an unknown north 

 and south range in the Goodsir Trough of the Cordilleran Geosyn- 

 cline. The formation is now known only in Mount Goodsir and ad- 

 joining areas of the Ottertail Range south of the Kicking Horse 

 Canyon, and possibly on the eastern side of the Beaverfoot Range 

 east of the Kootenay fault. Its upper boundary is unknown, but it 

 may be somewhere in the 6,000+ feet (1,828.8+ m.) of shales and 

 siliceous limestone on Mount Goodsir. The lower 500 feet (152.4 m.) 

 of the formation is of known Upper Cambrian age, but without the 

 evidence of fossils, or a lithologic break or unconformity between its 

 Upper Cambrian Housia fauna and the summit of the limestone series 

 on Mount Goodsir, it is not practicable to draw a definite boundary 

 between the Goodsir and a next superjacent formation, if one is 

 present. It may represent the Mons formation, although there is no 

 paleontological or stratigraphic evidence in favor of that supposition. 

 In the Beaverfoot Trough, the massive Upper Cambrian Lyell lime- 

 stone is overlain by shaly beds with a Briscoia-Saukia fauna holding 

 a stratigraphic position in the Ozarkian lower than any of the faunas 

 in the typical Mons, but clearly above the Sabine middle Upper Cam- 

 brian fauna. There is no trace of this Briscoia-Saukia or the Sabine 

 faunas in the Goodsir formation, or of the Goodsir Honsia fauna in 

 the Beaverfoot Trough section. 



The name Goodsir should be restricted to a typical Goodsir forma- 

 tion on Mount Goodsir or else used as a series name for the entire 

 6,000+ feet (1,828.8+ m.) referred to the Goodsir by Allan. If 

 this latter course is followed, then as faunas and boundaries are dis- 

 covered in the Goodsir series, formations will be defined and named. 



