TRIASSIC (?) ROCKS OF DIGBY B.VSIN. BAILEY. 359 



is another coarse pebble-bed, in which the trappean blocks are 

 very abundant and of large size. Finally, the base of the 

 section, at its southern end (the whole section being about 30 feet 

 in length) shows another bed of red sandstone, about two feet, 

 thick, and quite free from pebbles, while at the other extremity 

 repeated alternations of beds with and without the trappean 

 blocks may be seen. The lower part of the section is here- 

 obscured by a talus. 



It seems very certain, from what is here exhibited, that white 

 the trappean overflows along the Bay of Fundy trough were in 

 part and perhaps largely subsequent to the accumulation of 

 the Triassic red sandstones, as so clearly seen at Blomidon, they 

 must also in part have antedated or else been contemporaneous 

 with the deposition of red sandy sediments usually regarded as, 

 of the same age with the former. 



As having, perhaps, some bearing upon this interesting ques- 

 tion, reference may here be made to a curious section to be seen 

 near the south-western end of the island of Grand Manan, of 

 which, as is well known, so large a part consists of Triassic traps. 

 The more exact location of the section is in the settlement of Red 

 Head, at the south-west extremity of the relatively low tract of 

 old (Huronian ?) rocks underlying the inhabited portions of the 

 island, and to the south of the trappean ridge extending thence 

 to the Southern Head. The older rocks referred to are hard x 

 rubbly, dark grey slates, which are often greenish or chloritic,. 

 and much stained, sometimes ribbanded with oxide of iron. 

 They are greatly contorted, but have a general north-west dip 

 at a high angle. Resting on these slates, but without any dis- 

 tinct bedding, is a quantity of breccia or conglomerate, filled with, 

 blocks, both rounded and angular, of trap and slate. Then fol- 

 lows a mass of more solid trap, which is partly columnar, and, 

 into this the conglomerate or breccia seems to graduate. 



About fifty feet to the north of the above exposures, a second 

 and much more conspicuous bed (?) of breccia is seen, (Plate X, 

 Fig. 3), flanked on either side by solid columnar trap, the 

 conglomerate being about 10 feet wide and rising almost. 



