io8 



SIDNEY POWERS 



as shown in Fig. 23. The evidences which favor this conclusion 

 are the apparently dragged dips of the Triassic in several cases; 

 and the lack of pebbles of adjoining older rocks in the Triassic 

 conglomerates near by, and the actual fault seen in Harrington 

 River on the west. 1 



At Birch Hill and at Folly Village, older rocks project through 

 the Triassic strata according to Fletcher, who mapped both 



■ 



Fig. 24. — The base of the Triassic at Minasville, showing the basal sandstones 

 and conglomerates resting on horizontally trunkated Carboniferous shales. The 

 character of the erosion surface indicates a peneplain, and the composition of the 

 basal conglomerate indicates a lack of residual soil on this surface at the beginning 

 of Triassic sedimentation. 



localities with exaggeration of their size. There are reasons for 

 questioning the existence of older rock at Birch Hill, but the copper 

 prospect where these rocks are supposed to occur was not visited 

 in the reconnoissance. 



1 Certain of the localities are described by H. Fletcher, Geo!. Sitrv. Cjinnlti. Ann. 

 Sept., V (1S02), 142-43 P. 



