Paleomagnetic poles and polarity zonation from Cambrian and Devonian strata of Arizona

Details Paleomagnetic poles and polarity zonation from Cambrian and Devonian strata of Arizona Paleomagnetic poles and polarity zonation from Cambrian and Devonian strata of Arizona

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977e%26psl..36..423e&link_type=abstract

Earth and Planetary Science Letters, Volume 36, Issue 3, p. 423-433.

Physics

7

Scientific paper

Basal Paleozoic Tapeats Sandstone (Early and Middle Cambrian) in northern and central Arizona exhibits mixed polarity and a low-latitude paleomagnetic pole. Carbonates of Middle and early Late Cambrian age, and directly superposed carbonate and carbonate-cemented strata of latest Middle(?) and early Late Devonian age, are characterized by reversed polarity and high-latitude poles. The high-latitude Middle Cambrian pole, which appears to record a large but brief excursion of the polar wandering path, is considered provisional pending additional work. The Devonian data from Arizona indicate that a shift of the pole to a ``late Paleozoic'' position had occurred by Middle Devonian time.

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