82 b 



GEOLOGICAL SURVEY OP CANADA. 



Bedslwith Mo 



notis. 



Agglomerates. 



the north shore wherever it was examined ; the strike is not far from 

 parallel with the coast line, being 1ST. 80° W., with the clips generally 

 Conglomerate, northward. Between the point above mentioned and Boat Cove a 

 shallow synclinal may occur, which would account for the reappear- 

 ance of conglomerates in the little islands off the mouth of the cove. 

 The point of high land which separates the western and southern arms 

 of the inlet may probably be an anticlinal. It is formed, as far as 

 examined, of older rocks. The . apex of the point is composed of a 

 hard but much shattered felspathic rock which may be intrusive, 

 while on the south side of the North Arm grey limestones, inter- 

 bedded with greenish altered amygdaloids of the character frequently 

 found in the older or Triassic series of rocks, occur. 



On the south-east side of the South Arm flaggy argillites occur. They 

 were observed to become conglomeritic in one place with fragments of 

 the underlying limestone, which might be supposed to show that they 

 belong to the coal-bearing series. They hold, however, the character- 

 istic Triassic Monotis. Near where the south shore of the inlet turns 

 to an east and west course the Cretaceous sandstones again appear wi,th 

 general southerly dips. 



Near the southern entrance point of the inlet, the rocks are greyish 

 or greenish agglomerates, with interstratified tufaceous beds and sand- 

 stones. The whole not unlike those of the vicinity of Cumshewa 

 village. These rocks probably form the cliff which rises behind 

 the Skedans village, while the little promontary near it is composed of 

 older rocks, much altered locally. A mile and a half south-west of the 

 village, near the bottom of the bay, the southern margin of the 

 Cretaceous is found, though its actual junction with the older rocks is 

 concealed. The lowest bed seen is an agglomerate, comparatively soft, 

 which holds some fragments of flaggy argillite and of the massive 

 grey limestone associated with it. The superior position of this agglo- 

 merate to those which are associated with the limestones, is shown by 

 the fact that the limestone and argillite fragments appear to have 

 been fully hardened when included, and moreover, in some places show 

 evidence of water action iu rounding them. 



There are thus in Cumshewa Inlet probably several folds of the 

 Cretaceous rocks, the axes of the flexures lying nearly parallel to the 

 main direction of the inlet. Beds exactly representing those with 

 which the coal occurs at Skidegate were nowhere seen, nor was any 

 indication of the existence of workable deposits of coal in the parts of 

 the series exposed discovered. The existence of several faults, Tun- 

 ing nearly parallel to the inlet is suspected, though the only one of 

 these actually placed, is that of Conglomerate Point. 



Folds and 

 faults. 



