... Report on the building and ornamental stones of Canada, vol. I-V (1912)
Parks, W. A. (William Arthur), 1868-1936, Canada. Mines Branch · Ottawa : Government printing bureau · leaf 255
other irregular cracks run in all directions, so that, onthe whole, the formation is badly shattered. In addition to the jointing, theformation is disturbed by the injection of the dykes already referred to(Plate XXXVII). There does not seem to be any possibility of quar-rying large blocks on a… … Plate XXXVII.
Building stones
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