THE 



CANADIAN NATURALIST 



AND 



(^uitvtcvly f0uvual of ^dcnct 



THE POST-PLIOCENE GEOLOGY OF CANADA. 

 By J. W, Dawson, LL.D., F.R.S., F.G.S. 



PART II. — LOCAL D -ET AILS .— (Co7ltlmied.) 



5. Lower St. Lawrence — South Side. 



The Report of the Geological Survey of Canada (1863), in- 

 cludes all that is yet known of the Post-pliocene formations at 

 Gaspe, and thence upward to Trois Pistoles. According to this 

 Report, the Boulder-clay and overlying sands and gravels are 

 extensively spread over the Peninsula of Gaspe. On the Mag- 

 dalen River they have been traced up to a height of IGOO feet 

 above the sea, though marine shells are not recorded at this great 

 height. Terraces occur at various elevations, and in one of the 

 lower at Port Daniel, only fifteen feet above the sea, marine shells 

 occur. On the coast westward of Cape Rosier, terraces occur at 

 many places, and of difi'erent heights, and marine shells have 

 been found ninety feet above the sea. I have not had opportu- 

 nities to examine these deposits to the eastward of the place next 

 to be mentioned. 



Trois Pistoles. — At this place one of the most complete and 

 instructive sections of the- Post-pliocene in Canada, has been 

 exposed by the deep ravine of the river, and by the cuttings for 

 the Intercolonial Railway, The most important terrace at the 

 Vol. VI. ju No. 3. 



