NO. I FORMATIONS OF BEAVERFOOT-BRISCO-STANFORD RANGE 2^ 



Comparison with the Mons of Sinclair Canyon shows that there is an increase 

 of the proportion of limestone in this section and that it will be difficult to 

 compare the details of the two sections without a very close study of the 

 lithology and succession of faunules. 



SABINE MOUNTAIN SECTION 



Sabine ^ Mountain rises as a bold dark mass between the terraces 

 of Kootenay River on the east and south and the plain of Canal 

 Flats at the head of Columbia Lake on the southwest and west. It 

 forms the southern end of the Stanford Range which extends from 

 Sinclair Canyon 34 miles (54.7 km.) south. The higher ridges and 

 summits of the range are formed of the thick-bedded, hard silicious 

 limestones of the Silurian Beaverfoot and Brisco formations, and it 

 may be that remnants of Devonian limestones occur on the higher 

 points somewdiere along the Stanford Range. Professor S. J. 

 Schofield mentions the Devonian in his Canal Flats section."^ He says : 

 " The eastern wall rises abruptly out of a flat drift-covered floor 

 (Canal Flats). At the base of the wall, the Elko formation (Middle 

 Cambrian) outcrops and is overlain conformably by the fossili- 

 ferous Upper Cambrian (Sabine) formation which in turn is overlain 

 by the Devonian limestone." As we found an abundant Silurian 

 fauna in the limestones above the beds referred to the Upper Cam- 

 brian, it seems that Schofield identified the " Devonian " on Sabine 

 Mountain by lithologic resemblance to the Devonian of the southern 

 end of the Purcell Range where he found abundant Devonian fossils 

 correlated with the Jefiferson limestone fauna of Montana, Idaho and 

 Wyoming. 



Shepard mentions the Canal Flats locality of Schofield and cites 

 Schofield, giving a reference to Memoir y6, Geological Survey of 

 Canada, 191 5, pages 48, 53-55, but Schofield there refers to the 

 Devonian of the Purcell Range and does not speak of its presence 

 on Sabine Mountain at Canal Flats. 



Shepard notes fossiliferous Devonian strata a mile east of Harrow- 

 gate in the Beaverfoot Range ^ and Dr. Kirk collected a few finely 

 preserved high middle Devonian fossils from the locality. 



We did not find the Devonian on Sabine Mountain and no attempt 

 was made to measure the thickness of the Silurian limestones. The 

 lower, light colored limestones of the Beaverfoot formation has an 



^ Named in honor of Major General Sir Edward Sabine, 1788-1883, physicist 

 and astronomer. President Royal Society 1861-1871, by Palliser. 

 ^ Trans. RoJ^ Soc. Canada, 3d Ser., Vol. 14, Sec. IV, 1920, p. 76. 

 'Jour. Geol., Vol. 30, No. 5, 1922, p. 366. 



