Report on the building and ornamental stones of Canada (1912)
Parks, William A. (William Arthur), 1868-1936, Canada. Mines Branch (1901-1936) · Ottawa : Dept. of Mines, Mines Branch · leaf 48
a greater extent, the wholeseries of formations above the Cambrian have totally disappeared. 25 It is apparent that the erosion would be less pronounced in the valleysbetween the great ranges; as a consequence, we find younger rocks stillpreserved on the back slopes of the outer ranges. It is from… … of the eastern Rocky mountains. Figure 1 indicates the conditions insouthern Alberta where the fault blocks have been overthrust. The verticalscale is roughly 8,000 feet to the inch, but the horizontal scale isgreatly shortened; in consequence, the planes of overthrust, markedfault, are much too…
Building stones · Geology, Economic · Stone industry and trade
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
