Appendix II 



Physical Features of the Area 



The general character of the surface of the area embraced by the 

 map accompan3dng this report is constant throughout its entire extent, 

 and forming as it does, a portion of the great Canadian Shield, or North- 

 em Protaxis of America, its features are those presented by this great 

 region in most other places. Here the country is a great plain, rendered 

 somewhat uneven by depressions worn in its surface, and which are now 

 occupied by a great number of lakes and streams. While the term 

 peneplain is a convenient one to apply to this great stretch of country 

 with its distinctive physiographic features, it may perhaps be more 

 accurately designated simply as a somewhat dissected plain. From 

 the surface of the plain, in a few places, there rise low, rounded hills 

 or monadnocks, forming pronounced features of the landscape. 



Owing to the depressions, and the hills in question, the country pre- 

 sents to the casual observer a rolling or hilly character, but that it really 

 is a plateau or elevated plain, which has been etched or dissected by the 

 agencies of decay and erosion, is evident from a study of the landscape as 

 seen from any of the higher points in the area, as for instance, from the 

 summit of Greens mountain, on lots 15 and 16, concession i of the town- 

 ship of Glamorgan, which is 1,466 feet above sea-level, and from which 

 an uninterrupted view of the surrounding country can be obtained in all 

 directions as far as the eye can reach. The sky-line from here is seen to 

 be fiat and even around the whole horizon, its uniformity being broken 

 only by three or four low hills, rising from the plain in different direc- 

 tions. To the north and west the sky-line appears absolutely flat. The 

 hills constituting the unevennesses in the sky-line are, like Greens 

 mountain itself, composed of masses of harder rock, which remain by 

 virtue of the resistance which they offer to erosion. Thus, the most 

 noticeable of the little humps on the sky-line, as seen from Greens 

 mountain, is a group *of hills composed of granite, which forms part of 

 the Anstruther batholith, and is situated on concession v of Mon- 

 mouth. Another is fonned by a ridge of dioritic rock, which is crossed 

 by the Monck road in the eastern portion of the same township. An- 

 other slight unevenness in the sky-line is caused by a granitic mass 

 north of McCue lake, in the same township. The same even sky-line 

 is well seen from the higher points in the central and southern portions 

 of the township of Anson, or from any of the higher elevations in the 

 townships of Dysart, Harbum, or Bruton. It is also very distinctly 

 seen from the Hastings road, just south of McKenzie lake, on the line 

 between the townships of Lyell and Wicklow. In the southern portion 

 of the area, the same even sky-line, broken only by a very few low, iso- 

 lated hills, can be observed from the top of the Blue mountains in the 

 township of Methuen, or from the higher points in the great dioritic 

 intrusion occupying the central portion of the township of Lake. 



* Reprinted nearly verbatim from Geology of the Halihurlon and Bancroft 

 Areas, Province of Ontario. By Frank D. Adams and Alfred E. Barlow. Geological 

 Survey Branch, Department of Mines, Canada, 1910. 



