[BAILEY-MATTHEW] x\EW BRUNSWICK GEOLOGY 115 



volcanic rocks. ^ Within the basin lateral pressure from the SE has 

 compressed the yielding rocks into several folds, which at its SW 

 end have been reduced to a part only of one fold, showing only the 

 southern half of a syncline of overturned measures from the base to 

 the summit of the series. 



The Second basin of Cambrian rocks is developed in the valley 

 of the Kennebecasis river, but shows itself only in isolated outcrops 

 along the course of this river towards its mouth. Although in this 

 basin only detached portions of the series of deposits which make up 

 the Cambrian group are visible, the relations of these parts to each 

 other show that the dip of the rocks in this basin is to the northwest, 

 and the rocks which separate it from the St. John basin are of the same 

 Pre-Cambrian series of schists and limestones, with intrusive batho- 

 liths of granite, as is found in contact with the lower beds of the St. 

 John Cambrian basin; so that the two Cambrian basins were formed 

 on opposite sides of an old "massif." And this is further emphasized 

 by the fact that conglomerates with pebbles of the rocks of one of the 

 hills in this "massif" have been deposited at the base of the hill, and 

 in the paste of this conglomerate are remains of Trilobites of the upper 

 part of the Paradoxides zone. 



The Third basin of Cambrian rocks in this region is that of the 

 Long Reach of the St. John river, which, like that of the Kennebecasis, 

 is somewhat fragmentary; and as, in its lower part, the Cambrian of 

 this basin, like that of the Kennebecasis, disappears under sedimen s 

 of later date, both basins are imperfect. But both dip towards a great 

 band of old dioritic and schistose rocks remarkable for their regular 

 width and length, but, like the Cambrian rocks covered at the eastern 

 end by Carboniferous sediments. The geological relations of this great 

 belt of effusive rocks show it to be of later date than the "massif" of 

 limestones and schists, but older than the Cambrian rocks of the basins 

 we have named. 



The series of strata which we find to characterize the opening of 

 Palaeozoic Time in this region is the following: — 



Coldbrookian Volcanic. No fossils. 



Etcheminian Mostly red slates and sandstones. 



Hyalithes. Obolella. 



' The relation in this respect reminds one of the basin in the Bay of Fundy 

 100 fathoms deep, which lies between the volcanics of the island of Grand Manan 

 and those of Briar Island and Long Island in Nova Scotia. 



