The paleomagnetism of a 110-km-long diabase dike in the southern part of Nova Scotia has been studied. A potassium-argon whole-rock age determination has confirmed the Triassic age assignment to the dike rocks. The magnetic stability and other magnetic properties of the rocks were examined, and the presence of a stable component was established. An analysis of the paleomagnetic data establishes their statistical significance and indicates that at the time of injection of the dike the North Pole was situated in the area presently occupied by northern Siberia (98°E, 69°N). This pole position is in good agreement with available paleomagnetic poles obtained for other North American Triassic formations.
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Larochelle et al. (1966) studied this question.
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