NO. 5 PRE-DEVONIAN PALEOZOIC FORMATIONS 189 



ROBSON PEAK DISTRICT 



I selected and used several Indian names to designate unnamed 

 topographic features in the Robson District, as all the good old 

 English, Scotch, and Irish names had been used again and again 

 in the Cordillera. I did not care to use, for instance, the name Robson 

 for six different objects within a limited area, and so ventured to 

 call the great glacier Hunga (Indian for chief). The names Ex- 

 tinguisher and Rearguard seem to be so inappropriate and trivial 

 that I ventured to suggest a change to Billings Butte and lyatunga 

 (black) in the hope that a future generation might see fit to do the 

 same. 



The name Phillips Mountain was applied to the point above Snow- 

 bird Pass which, on Wheeler's map of 1911, is called Lynx Center 

 Station, and its elevation given as 9,542 feet (2,908.4 m.). The name 

 Phillips having been used by Wheeler in 1911 for a mountain north 

 of Whitehorn, and approved later by the Geographic Board, the 

 name Chushina' (small) Ridge replaces Phillips Mountain of Wal- 

 cott. Lynx Mountain (see pis. 105, 107) (10,471 feet, 3,191.6 m.) is 

 nearly a mile (1.6 km.) south of the high point of Chushina Ridge, and 

 Mount Resplendent (11,173 feet, 3,405.5 m.) is more than three miles 

 (4.8 km.) south-southwest of Lynx. 



In my published photographs ' the summits of Lynx and Re- 

 splendent are concealed by clouds and only the high limestone clififs 

 north of Resplendent and south of Billings Butte (Extinguisher) 

 are in sight. The sharp summit of Resplendent is fully 2 miles 

 (3.2 km.) south of Billings Butte and a mile south of the high cliffs 

 seen to the left and above Billings Butte. 



GEOLOGICAL NOMENCLATURE 



Geological nomenclature as applied to rock formations is of ser- 

 vice only if it enables the student to refer the named formation to 

 its position in an established stratigraphic system. If it encumbers 

 maps and texts with terms that lead only to confusion and error, the 

 sooner it is correctly redefined or goes to the scrap heap the better. 



With the increase of information by field study and accurate sur- 

 veys, reinforced in the case of the sedimentary rocks by thorough 

 paleontological research and in the case of the crystalline and eruptive 

 rocks by petrographic studies, it is inevitable that there will be a 

 breaking up of former units and groupings that will necessitate new 



* Approved by Geographic Board of Canada. 



^Smithsonian Misc. Coll., Vol. 57, No. 12, 1913, pi. 57, fig. 2; pi. 58, fig. 2. 



