358 TRIASSIC(?) ROCKS OF DIGBY BASIN. BAILEY. 



following the former along the shore for a short distance they 

 are found, after becoming gradually harder and somewhat 

 vesicular, to terminate abruptly along a vertical line, which would 

 appear to be a line of fault, the only rocks seen beyond it, but in 

 loose blocks, being composed of trap. 



From a review of the above conditions it would seem to be at 

 least possihle that the red and purple beds, which are undoubtedly 

 a part of the group usually referred to the Trias, are more recent 

 than the neighboring traps, unless indeed there were several 

 periods of eruption, between or during which the stratified rocks 

 were deposited, and then received their burden of trappean 

 fragments. 



We have now to notice another section in which facts of a 

 similar character are still more clearly exhibited. 



This second section is found in the town of Digby, just below 

 the point where the track of the Dominion Atlantic Railway, in 

 taking the direction of Bear River, runs along the top of a series 

 of low bluffs overlooking the Annapolis Basin. One of them, 

 about twenty feet high, is nearly vertical and almost wholly 

 composed of rock, exhibiting the arrangement reproduced in the 

 accompanying diagram. (See Plate X, Fig. 1.) 



At the summit are about two feet of soil, consisting of a 

 reddish sandy loam. This rests upon a bed which in texture 

 resembles a coarse gravel, but with the pebbles contained in a 

 matrix which, while sandy, is compact, and bleached to a light 

 grey colour by the action of humus acids from above. The pebbles 

 in this bed include traps similar to those of the North Mountains, 

 both crystalline and amygdaloidal, besides granite and slate ; 

 and, as in the case of some of the beds on the Granville shore, 

 they suggest a Quaternary origin. But directly beneath is a 

 bed of reddish grey sandstone, several feet in thickness, which 

 as clearly belongs to a much earlier formation, and in one par- 

 ticular only differs from the ordinary red sandstones of the 

 Annapolis valley. It al*o contains, but not uniformly, blocLs 

 of Xorth Mountain trap. Further, below this red sandstone 

 bed, but at the northern end of the section, and merging into it, 



