Abstract
The Pennsylvanian red beds of the Pictou Group on Prince Edward Island, Canada, retain a stable remanence in hematite that gives a paleomagnetic pole position at 42°N, 131°E (dp=2°, dm=4°). Positive conglomerate and contact tests along with dual polarities show that the remanence is primary and of Stephanian age (286–306 Ma). For elongated pole distributions through time, Bingham statistics is more suitable than Fisher statistics. Bingham statistics shows that there is a consistent discordance in the Pennsylvanian to Late Triassic poles from the Appalachian orogenic belt and interior craton of North America. This discordance is most readily explained by younger partial remagnetization, or possibly complete remagnetization, in many rock units, especially red beds of the interior craton. Bingham analysis also shows that there is a significant difference between the Colorado Plateau and interior craton that is most readily explained by a Laramide 5.5° ± 2.9° clockwise rotation of the plateau relative to the craton.
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