Abstract
Joint orientations were measured in the mountains of Western Albertaand British Columbia. These were then evaluated statistically accordingto the standard method of Kohlbeck and Scheidegger. If the bisectricesof the preferred joint orientations are interpreted as principal directionsof the neotectonic stress field, the maximum compression in the latteris found to be from NE-SW (in the South) to NNE-SSW (in the North).This agrees well with data regarding the neotectonic intraplate stressesobserved from oil-well break-out data.
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