THE 



CANADIAN NATURALIST 



AND 



^uavtetly f 0Ui:ttal of Science. 



ON THE SURFACE GEOLOGY OF NEW BRUNSWICK. 



By G. F. Matthew, F.G.S. 



' ? 



The present paper on the second group of surface deposits, is 

 in continuation of one publi^-hed in the Canadian Natui-alisf , 

 New Series, Vol. 6, No. 1, and devoted to a description of the 

 Drift strias and Boulder clay in the Southern counties of New 

 Brunswick. Since the former article was written, other facts 

 having an important bearing on the geology of the Glacial 

 period have been observed, to which I would refer, before 

 entering upon the main subject of this one. 



I. Glacial Epoch. 



A careful examination of the direction of the striae recorded 

 in the table given in my previous article, shows clearly the 

 influence of the contour of the land, even in minute particulars, 

 upon the course of the glacial striae. I have had an opportunity, 

 during the past summer, of verifying this feature in the action 

 of the striatinu; force ; and have observed that the later striae 

 conform more closely to the minute inequalities of the surface 

 than do the more ancient markings. It is also a general 

 rule that the older courses of glacial lines are much heavier 

 than the later, though not so distinct nor so sharply cut. 

 The greater prominence of the later striae is due to the oblit- 

 eration to a greater or less degree of the older set, for the 

 latter are often to be seen only on certain protected slopes of 

 the ledaes. In addition to the secondary or distinct set of 

 striae, — in which is included the great majority of those 

 recorded in the following table— there is not infnxiuently a 

 Vol. VIT, kb No. 8. 



