27 



Mile 113-5 to 122-9. — A second large stock of massive 

 grey granodiorite, intruded through the rocks of the Kit- 

 salas formation, is crossed in this reach. 



The mountains bordering the valley from Kitsalas 

 canyon eastward to this point and for some distance 

 beyond, are considered to be a northerly spur from the 

 Coast range. High snowy peaks and steep serrated 

 glacier-laden ridges are seen south of the valley up gashes 

 cut by tributary streams. 



Mile 122-9. — The semi-crystalline volcanics and asso- 

 ciated sedimentaries of the Kitsalas formation reappear at 

 this point east of the granodiorite stock, but are soon 

 overlaid by the banded tuffs of the Hazelton formation. 



Mile 123-45. — The first section of the rocks of the 

 Hazelton formation occur at this point. They consist of 

 dark tuffs, alternating with black, fine-grained carbona- 

 ceous bands, also tufaceous in character, and sheets of 

 green andesite. The rocks are folded, and are often 

 broken and faulted, but are much less altered than those 

 of the underlying Kitsalas formation. 



Similar banded rocks, varying somewhat in texture 

 and colour and occasionally including some conglomerates, 

 are exposed at intervals eastward to Skeena Crossing. 

 The undulate as a rule in easy folds, but in places are 

 steeply tilted, violently flexed and broken. They are cut 

 by a number of diorite porphyrite dykes and small stocks 

 of granodiorite. 



Mile 131. — The Skeena passes through a short canyon 

 at this point walled with massive bands of grey tuffs and 

 dark carbonaceous shale. The valley is wide, with a 

 terraced central portion bordered by rocky ridges rising 

 farther back into mountains. 



Mile 139-5. — East of the river is Minskinish, a well 

 built Indian village, and behind it, rises a picturesque 

 group of high peaks known as the Seven Sisters, built 

 mostly of the upturned rocks of the Hazelton formation 

 intruded by a granitic stock. These mountains are placed 

 in the Interior region, although they are not separated 

 from the Coast Range mountains by any marked depres- 

 sion. 



Mile 143-5. — Tufaceous beds of the Hazelton forma- 

 tion pass into conglomerates made up of well rolled pebbles 

 of greenstone with some granite and slate in a tufaceous 

 matrix. 



