Cambrian Rocks in Acadia. 23 
gneissic rocks of the Laurentian proper. In this valley the 
lowest beds of the St. John group are with difficulty dis- 
tinguished from the underlying gneiss, and by the “‘arkose’”’- 
like composition of some layers and by the wave marks and 
worm trails on others, recall the Eophyton sandstones of 
Sweden. 
In the next valley to the north, that of the Long Reach 
of the St. John R., the red series underlying the St. John 
group is found in full force, but has not received a careful 
examination. 
There can be no doubt that this underlying series is one 
of considerable importance, and as we find it increase in 
thickness in the St. John Basin, the further east we follow 
it, until it is covered up by Carboniferous deposits, it is 
highly probable that the 1,200 feet of measures, at its 
easternmost exposures, does not represent the entire thick- 
néss of the formation. 
Mr. Alex. Murray has described a mass of red, green and 
grey sandstones, with slates of similar color, in his report 
on the geology of Newfoundland (p. 238), which lie at the 
base of the Paradoxides beds on that island. He estimates 
their thickness at 1,500 feet, and states that while they are 
present in the Cambrian basins of Trinity, St. Mary’s and 
Placentia bays, they are absent from those of Conception 
and Fortune bays. Hence we may infer that these lower 
sandstones, etc., form a lower series unconformable to the 
- beds carrying Paradoxides. The only fossils reported from 
these rocks are ‘“‘obscure forms like fucoids, and peculiar 
markings resembling annelid tracks.” The conglomerate 
at Manuel Brook, Conception Bay, and the sandstones else- 
where at a corresponding horizon, appear to mark the break 
between this series and the higher part of the Cambrian 
rocks in Newfoundland. 
Between the beds of this lower formation of the Cambrian 
system in New Brunswick, and those which lie at the same 
horizon in Norway and Wales, there isa strong resemblance 
in mineral character; in these countries, feldspathic sand- 
stones, often of a red color, with some conglomerates and 
more or less of red and green shales or slates, make up the 
greater part of this basal formation, 
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