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The paleomagnetic pole position obtained from the Roskruge Volcanics is at 73.6°N, 176.0°E with dp = 6.2° and dm = 8.8°. The Gringo Gulch Volcanics pole position is at 77.0°N, 201.0°E with dp = 1.2° and dm = 1.7°. In conjunction with other recently published Paleocene and Eocene paleomagnetic poles, these data provide details of North American apparent polar wander during the Laramide orogeny (∼80 to ∼40 Ma). An episode of rapid apparent polar wander from the Cretaceous pole position in the Bering Strait to the Eocene pole position near the present rotation axis occurred during that interval of time. The initiation of this episode of apparent polar wander appears to be coincident with the major plate reorganizations which occurred at the onset of the Laramide orogeny."},{"label":"DOI","value":"10.1029/JB086iB05p04021"},{"label":"Volume","value":"86"},{"label":"Publication Date","value":"D:05 M:10 Y:1981"},{"label":"Publication Information","value":"Journal of Geophysical Research, 1981, Volume, 86, Number B5, 4021-4028. Copyright 1981 American Geophysical Union. Archived version is final published version."}],"description":"Paleomagnetism of the Roskruge and Gringo Gulch Volcanics, southeast Arizona","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://iiif.quartexcollections.com/portland/iiif/65418668-0039-4ec2-aa11-4ac60ba9672d/canvas/_1","@type":"sc:Canvas","label":"Paleomagnetism of the Roskruge and Gringo Gulch Volcanics 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