[ELLs] FOSSILS FOUND IN SOUTHERN NEW BRUNSWICK 19 
This extreme metamorphism also appears to have affected certain 
strata of Devonian age in the vicinityof St.John cityand along the coast 
adjacent both to the east and west. Here the close association of the 
diabase and felsite rock with the strata of the Devonian formations is 
very evident, as in parts of the Pisarinco peninsula, a few miles west 
of St. John city, and around the shores of Courtney bay to the east 
of that city where the ordinary fossiliferous slates and shales have been 
altered to typical schists of a marked Pre-Cambrian aspect and portions 
of a limestone formation have been altered into a marble. The horizon 
has been for a long time in a position of doubt, in view of the fact that 
no organisms have yet been found in the limestone portion. They 
however appear to belong rather to the limestone portion of the Blooms- 
bury formation, which has lately been regarded as constituting the basal 
member of the Devonian system in this province. They directly under- 
lie the fossiliferous division once known under the term Little River 
group, for a long time regarded as closely related in age to the Devonian 
formations of Gaspé, and containing a fossil flora which has been studied 
by several observers from the first examination by the late Sir William 
Dawson down to the present time. The Bloomsbury division consists 
of conglomerate, slates and sandstone and contains large masses of 
igneous rocks, the diabase portion of which is conspicuous, as a rule, for 
the abundance of epidote, and these intrusions appear to have exerted 
a marked metamorphic action on the sediments with which they are 
associated. So great has been the alteration in many places that por- 
tions of this formation have been for some years regarded as Pre- 
Cambrian in age. 
A somewhat similar error was made some years ago in the study of 
the formation in the vicinity of Memphremagog lake in the southern 
part of the eastern townships of Quebec. Here strata of the lower 
Devonian and upper Silurian formations have been greatly altered by 
the agency of great masses of diabase into true talcose and mica schist, 
so that in the absence of organisms they were for some years mapped 
as of Pre-Cambrian age. Later, after a closer study of these rocks, the 
presence of well-defined fossils, including corals of well-known Devonian 
and Silurian species, was revealed, and proved the mistake which had 
been made during the first examination of this area. These illustrations 
clearly prove that in the study of such rocks which show so plainly the 
agency of metamorphic action, such determination, merely on lithologi- 
cal grounds or mineral characteristics, has been misleading in more than 
one of the provinces of Canada. 
In the case of the altered sediments found around the shores of 
Passamaquoddy bay in Charlotte county, the original strata, in 
certain instances, where the metamorphism has not reached an 
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