TRIASSIC (?) ROCKS OF DIGBY BASIN.—BAILEY. 309 
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 while 
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 1n 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, 
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 ais- 
tinct bedding, isa 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 tifty 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. 
