300 RECORDS OF POST-TRIASSIC CHANGES 
Blomidon, offering a huge barrier to the advancing ice sheet 
which would deflect the main current, and leave a sheltered 
area behind where the eroding action would be small or absent 
altogether, and the conditions favorable for deposition during 
the decline and disappearance of the ice. 
This protected area would extend about to Ira Woodworth 
Bay, whence westwardly the shore would be exposed to the full 
sweep cf the mass passing to the westward of Cape Split. It is 
significant that east of this Bay occur the heavy deposits of 
boulder clay while to the west a bold bare coast of. black for- 
bidding trap extends for a hundred and twenty miles with but 
an occasional heap of red boulder clay that has been deposited 
behind some projecting clit Have we not here a simple 
explanation of the preservation of this fragment of marine lime- 
stone, this mere remnant of what must have been a formation 
of considerable extent, the sole representative in north-eastern 
America, containing the only known records for that region, of 
the Geological history of the long period of time between the 
Triassic and the Glacial periods. 
Stratified Sand and Gravel. 
But the records preserved in this strip of coast do not end 
with those of the Glacial period. Overlying the boulder clay is 
a deposit of stratified sand and gravel several feet.in thtckness, 
the base of which is now some thirty feet above high tide level. 
The upper limit of this formation was not determined, but the 
coarse and water worn character of.the material classes it as a 
shore deposit, laid down within or but slightly below tidal 
limits. This formation has been noticed at Wolfville, Pereau 
and at several localities in Dighy County. In the Cornwallis 
Valley it consists mainly of stratified sands in which the eross 
bedding indicates that during their deposition the currents 
flowed strongly both to the north-east and to the south-west, or 
parallel with the general trend of the valley. 
These deposits tell of a submergence succeeding the Glacial 
period of at least thirty or forty feet and a re-elevation of at 
