A Paleocene Paleomagnetic Pole from the Gringo Gulch Volcanics, Santa Cruz County, Arizona

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A Paleocene Paleomagnetic Pole from the Gringo Gulch Volcanics, Santa Cruz County, Arizona
Barnes, Arthur E.
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The University of Arizona.
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Paleomagnetic data from 25 sites (5 samples per site) in andesite flows of the Gringo Gulch Volcanics in Santa Cruz County, Arizona, were analyzed to determine a lower Paleocene paleomagnetic pole. Alternating-field demagnetization to 500 oe peak field was sufficient to erase secondary viscous components. The mean direction of magnetization (inclination = -58.8°, declination = 167.5 °) was obtained by averaging the site mean directions of the 25 sites, which are all reversed. The resultant lower Paleocene pole position is at lat. 77.0 °N, 1on. 201.0 °E (dp = 1.2 °, dm = 1.7 °).
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Arizona; Cenozoic; continental drift; Gringo Gulch Volcanics; igneous rocks; Laramide Orogeny; movement; North America; orogeny; Paleocene; Paleogene; paleomagnetism; Pima County Arizona; plate tectonics; polar wandering; pole positions; Santa Cruz County Arizona; Santa Rita Mountains; stratigraphy; tectonophysics; Tertiary; United States; volcanic rocks
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Graduate College; Geosciences
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University of Arizona
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