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Detailed Reference Information |
Clement, B.M., Rodda, P., Sierra, L. and Smith, E. (1998). Lower Pliocene polarity transitions from the Suva Marl, Fiji. Journal of Geophysical Research 103: doi: 10.1029/98JB00509. issn: 0148-0227. |
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We present a paleomagnetic record of the lower Cochiti polarity transition and new results from the lower and upper Nunivak transitions obtained from the Lower Pliocene Suva Marl (Fiji, (18 ¿S, 178 ¿E)). This formation has yielded a well-defined magnetostratigraphy that, combined with 40Ar/39Ar ages from interbedded tuff beds, provides excellent chronostratigraphic control . We previously presented the upper Cochiti and the upper and lower Nunivak polarity transition records from this unit . New results were obtained from oriented block samples spanning these reversals. Each of these reversals was sampled at duplicate sections separated by 4 to 8 km. The agreement between the records obtained from different sections suggests that the paleomagnetic records are not artifacts of local sedimentary disturbances or random degrees of incompletely removed overprints. Instead the similarities in these and other records of these same reversals from different types of paleomagnetic recorders suggest that they provide information about the behavior of the geomagnetic field as it reverses. ¿ 1998 American Geophysical Union We present a paleomagnetic record of the lower Cochiti polarity transition and new results from the lower and upper Nunivak transitions obtained from the Lower Pliocene Suva Marl (Fiji, (18 ¿S, 178 ¿E)). This formation has yielded a well-defined magnetostratigraphy that, combined with 40Ar/39Ar ages from interbedded tuff beds, provides excellent chronostratigraphic control . We previously presented the upper Cochiti and the upper and lower Nunivak polarity transition records from this unit . New results were obtained from oriented block samples spanning these reversals. Each of these reversals was sampled at duplicate sections separated by 4 to 8 km. The agreement between the records obtained from different sections suggests that the paleomagnetic records are not artifacts of local sedimentary disturbances or random degrees of incompletely removed overprints. Instead the similarities in these and other records of these same reversals from different types of paleomagnetic recorders suggest that they provide information about the behavior of the geomagnetic field as it reverses. ¿ 1998 American Geophysical Union |
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Keywords
Geomagnetism and Paleomagnetism, Geomagnetic excursions |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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