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 316
mount of hard material as the excavation is advanced.Mr. Oliver considers that the greatest percentage of desirable soft buffstone lies between the superficial shattered zone and a distance from thenatural exposed face of about 100 feet. There can be no doubt that thesoft buff stone represents the… … Paskapoo sandstone. (Juarry of Wm. Oliver and Co., Calgary, Alberta. ^ 217 ability, the result of secondary hardening due to the impounding of mineralladen waters towards the inner parts of the heavier beds. The grey stonemay represent a slightly oxidized phase of the original material or,…
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.
