Field Notebook: Ontario 1911, 1912
Page 98
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
In looking at the geology and structure of the region this morning it is evident that the Oolitic originally extended far to the north. It is now presumed to down faulting on which the Caledonian mass has acted. This structure was finally made during the Taemian Disturbance and the old lines reaccentuated again in Tertiary or later times. As we go through St Anne de Beaupre the fault scarp is more marked. To the south are the pine farms and to the north the conifer wooded jagged ridge. Far back of the latter are the Laurentides. (21 miles from Quebec) At Chantemerley one rises at once up to the upper river terrace at 300 feet but farther to the east, this rise is broken up into a number of smaller terraces. Some of these are beautifully formed on the farms, little sharpe ascents of about 50 feet. In other cases it is all one graded slope to some major terrace beneath which begins another slope In places the shales rise higher upon the Granite ridge. F = Fault.