NO. 5 PRE-DEVONIAN PALEOZOIC FORMATIONS 24I 



and northeast of Wolverine Pass in the Ottertail Range, but did not 

 find a satisfactory section for measurement. The contact with the 

 superjacent Ottertail limestones is plainly shown a little north of the 

 Pass. 



Geographic distribution. — The Chancellor formation appears to be 

 a local deposit in the same sense as the Ottertail, as both are limited 

 to the Ottertail and Vermilion Ranges and adjoining valleys to the 

 northeast drained by the Ottertail and Vermilion rivers. It may con- 

 tinue to the southeast into the Mitchell Range, where the topography, 

 as seen from the Kootenay Valley, strongly suggests that it was 

 eroded from the shaly strata of the Chancellor formation. Allan states 

 that the sheared zone is limited on the northeast by the Stephen-Dennis 

 fault ; also that the formation forms the base of the Van Plorn Range 

 northeast of the Ottertail Range and Kicking Horse River.' 



Stratigraphic relations.. — The relations of the upper boundary of 

 the Chancellor to the superjacent Ottertail limestones are clearly 

 shown in numerous sections in the Ottertail Range. The limestones 

 form cliffs and steep ledges in strong contrast with the slopes and 

 rounded ridges and knolls of the Chancellor shales (see pi. 75). Allan 

 found a massive limestone to the northwest of Mount Hunter in the 

 Van Horn Range, subjacent to the shales of the Chancellor ^ which 

 he assumed to be the representative of the Sherbrook formation (see 

 p. 242). 



Fauna. — The only fossils reported by Allan were from the Van 

 Horn Range. They include some poor sf^ecimens of LingnlcUa, L. issc 

 Walcott? and Agnostus sp. ?^ I found a number of poor specimens 

 of Agnostus east of Wolverine Pass. 



I noted in Hoodoo Canyon, between Chancellor and Vaux Moun- 

 tains, large boulders of a light gray quartzitic sandstone 3 to 5 feet 

 (.9 to 1.5 m.) in diameter. One boulder, 5 feet (1.5 m.) through, 

 had many vertical Scolithus (Annelid) borings from 5 to 10 milli- 

 meters in diameter and filled with white quartz. The borings were 

 more irregular than Scolithus linearis of the Olenellus zone of the 

 Appalachian region. The boulders were probably derived from a 

 lentil of sandstone in the Upper Cambrian, possibly in the Chancellor 

 formation. I also noted other boulders with filled annelid borings 

 penetrating them in a very irregular manner. 



' Loc. cit., p. 

 ^ Idem, p. 84. 

 ' Idem, p. 80. 



