256 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 75 



Geographic distribution. — Northeastern slope of Tali Mountain and 

 southeast down Moose River Valley. It is i)robal)le that the high 

 ridge northwest of Calumet Creek and northeast of Smoky River 

 is formed of the Tah, Mahto, and higher formations. 



]\IcNaughton Formation. Walcott. 1913' 



Type locality. — Moose Pass and McNaughton Mountain, northeast 

 of Moose River and northwest of Grant Brook. 



Derivation. — From McNaughton Mountain. 



Character. — Light gray, massive-bedded quartzitic sandstones. 



Thickness. — Estimated on McNaughton Mountain, 500+ feet 

 (152.4+ m.). 



Geographic distribution. — McNaughton Mountain and northwest to 

 Moose Pass west of the Moose Pass fault. 



Fauna. — None found. 



ALGONKIAN 



belt series 



Hector Formation. Walcott, 1910* 



Type locality. — Redoubt Mountain (referred to as Fort Mountain 

 in 1910) (see pi. 46). 



Derivation. — From Mount Hector, where Lower Cambrian strata 

 are superjacent to the Hector formation. 



Character. — h'inely arenaceous and siliceous greenish, reddish, and 

 purple shales. A thin intra formational conglomerate, composed of 

 thin layers of compact. i)inkish limestone in a fine arenaceous matrix, 

 occurs no feet (33.5 m.) below the top of the shales, and 820 feet 

 (249.9 "!■) from the top there is a massive-bedded conglomerate 

 of quartz pebbles and fragments of pinkish gray limestone in a coarse 

 and fine-grained sandstone matrix. In the Mount Temple section 

 a few layers of hard, dove-colored to pinkish limestone occur about 

 700 feet (213.4 m.) below the top of the Hector, and 855 feet 

 (260.6 m.) below that a massive conglomerate, 365 feet thick 

 (in. 3 m.). formed of pebbles of quartz, sandstone, siliceous shale 

 and fragments of a reddish-purple jaspery rock, all^ in a coarse sand- 

 stone matrix. 



TJiickncss. — At Redoubt Mountain, 1,300 feet (396.2 m.), and on 

 opposite side of Bow River Valley, on the northeast ridge of Mount 

 Temple and northwest of the Valley of the Ten Peaks, 2,150-f- feet 

 (655-3+ m.). 



' Smithsonian Misc. Coll., Vol. 57, No. 12, p. 335. 

 ' Idem, Vol. 53, No. 7, 1910, p. 428. 



