296 RECORDS OF POST-TRIASSIC CHANGES 
It has been stated that these strata rest unconformably on a 
surface of decomposed trap, and that the lower layers are made 
up. in part, of the triturated fragments of the trap. This would 
indicate that after the pouring out of these lava sheets their 
surface was above water, was carved into valleys and hills, by 
the streams of the time, and subjected to the decomposing action 
of atmospheric agencies and vegetation, until the ancient surface 
came to present the irregular and weathered aspect that we may 
now see on portions that have been subjected to similar action 
during recent geological time. This necessarily long exposure 
preceded the subsidence and submergence during which the 
stratified formation was deposited and would indicate, to my 
mind, that at least a whole geological period had intervened 
between the outpouring of the trap and the deposition of the 
marine formation unconformably upon its weathered surface. 
The trap is considered to be of Triassic age and I would place 
that of the limestone as probably Cretaceous. Again, from Cape 
Cod southwards marine deposits were laid down along the 
Atlantic border during Cretaceous times. Altho’ I have as yet 
been unable to find any traces of foraminifera in the soft greenish 
sandstone that occurs in one of the coves, yet the general aspect 
of the fossils so far found is also suggestive of Cretaceous age. 
The hollows or depressions in which these remnants are 
preserved are at present small valleys, occupied by brooks and 
terminating on the shore in small coves which also owe their 
existence to the erosion preceding the deposition of this forma- 
tion. The Topography of this portion of the North Mountain is 
thus shown to be much older than the Glacial period and not 
only are the brooks flowing in Mesozoic channels but the Bay 
of Fundy waves are again washing the shores of coves from 
which they have been excluded since the Mesozoic period. 
The facts observed here are in accord with the conclusion 
arrived at from a comparison of the present stream beds with 
the streams that now occupy them. Some of the gorges in this 
area are equal in magnitude to those of the secondary streams 
of the South Mountain, although the volume of water now flow- 
