AFii iO i917. 



THE OTTAWA NATURALIST. 



Vol. XI. OTTAWA, JANUARY, 1898. No. 10. 



FORMATIONS, FAULTS AND FOLDS OF THE 

 OTTAWA DISTRICT.* 



By R, W. Ells, LL.D., F.R.S.C, F.G.S.A., 

 Of the Geological Survey of Canada, Ottawa. 



With the exception of the remarks on the geology of the 

 Ottawa area, contained in the "Geology of Canada," 1863, but 

 little attention has been paid, in any of the official publications 

 of the Geological Survey to the study of the rock formations in 

 the vicinity of this city. This has been in large part due to the 

 fact that the work of the different members of the field staff has 

 lain, for the most part, in districts more remote. The local geo- 

 logy and palaeontology have however been described in some 

 detail by several members of this Club, more especially by Dr. 

 Ami, Mr. T. W. E. Sowter, Mr. Walter R. Billings, and others, 

 who have contributed papers from time to time in the Trans- 

 actions, so that we have a very fair general knowledge of the 

 formations about our city. There is however a large field for 

 collectors at our very doors, and the object of this paper is more 

 particularly to direct attention to the distiibution of the several 

 geological formations in our more immediate vicinity, as well as 

 to indicate some points of structure, in connection with certain 

 faults and folds, which occur in close proximity to Ottawa, as 

 well as in the city itself These have not hitherto been 

 prominently referred to, but they have served to complicate 

 very considerably the geological relations of the several forma- 

 tions of the Palaeozoic series. 



*Read before the Ottawa Field-Naturalists' Club, Tuesday, Jan. 4th, 1898. 



