376 



than Devonian and that as far as the stratigraphical 

 evidence indicates, may be even Silurian as contended by 

 Dr. Matthew. 



The plant-bearing Fern Ledges undoubtedly belong to 

 the Little River group and according to various eminent 

 authorities, the plants indicate in the strongest fashion 

 possible that the strata are of mid-Carboniferous age. 

 If this conclusion is correct then it must be conceded that 

 either the Red Head beds are not younger than the Little 

 River group, or if they are younger, that they are much 

 younger than the lithologically similar strata occurring on 

 Kennebecasis island. 



CAMBRIAN AND PRE-CAMBRIAN SECTION, 

 ST. JOHN CITY.* 



The Cambrian strata underlying St. John city are 

 arranged in three synclinal folds whose axes strike approxi- 

 mately northeast. The folds, in general, are overturned 

 and the strata are usually either vertical or dip steeply 

 towards the south. The basin is traversed by a few 

 major faults striking parallel with the course of the axes 

 of folding. 



The centre of the northern of the three synclines is 

 indicated by a depression known as the "Valley" and in 

 which lies the yard of the Intercolonial railway. The 

 centre of the syncline is occupied by strata belonging to 

 the Bretonian but the measures are largely concealed 

 beneath the drift-covered floor of the Valley. The axis 

 of the syncline passes on the south side of the depression, 

 at the foot of a steep hill. On the opposite northern 

 slope of the Valley are outcrops of Acadian, Johannian 

 and Etcheminian strata forming the north limb of the 

 syncline. Pre-Cambrian strata are exposed on the summit 

 of the hill. 



On Meadow street, just south of the junction of this 

 street and City road, at the foot of the slope forming the 

 southwest side of the Valley, a rock-cutting exposes strata 

 belonging to the Bretonian, the highest of the Cambrian 

 divisions. The measures are dark slates with many thin 

 beds of hard, fine sandstone. At the beginning of the 



See Map, — Part of St. John City. 



