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Tektites and Geomagnetic Reversals
Scientific American, 1967THE microscopic glassy objects which occur in sediments deposited in the Australasian area during and shortly after the last magnetic polarity reversal are apparently tektites (see succeeding communication). The last reversal occurred 0.7 × 106 yr ago: potassium–argon dates1 indicate that the Australasian tektites were formed 0.7 × 106 yr ago.
Billy P. Glass, Bruce C. Heezen
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Terra Nova, 1990
ABSTRACTThe history of geomagnetic polarity reversals in the Cenozoic and Late Mesozoic is well known since the Late Jurassic (Oxfordian). A continuous record of polarity has been derived for this time interval from the interpretation of oceanic magnetic anomalies.
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ABSTRACTThe history of geomagnetic polarity reversals in the Cenozoic and Late Mesozoic is well known since the Late Jurassic (Oxfordian). A continuous record of polarity has been derived for this time interval from the interpretation of oceanic magnetic anomalies.
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Precambrian geomagnetic field reversal
Nature, 1975THE geomagnetic field has reversed many times. Numerous polarity transitions of Cainozoic age, together with very few of Mesozoic and Palaeozoic age, have been studied in detail and the studies indicate that the processes involved have remained relatively unchanged in time. Here we report the first detailed study of a Precambrian reversal.
D. K. BINGHAM, M. E. EVANS
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Morphology of geomagnetic reversals
Reviews of Geophysics, 1987Geophysicists from the United States have been very active in the international effort to understand the nature of the geomagnetic field during polarity reversals. The traditional justification of this research, that knowledge of transitional field behavior may eventually help constrain theoretical geomagnetic dynamo models, remains compelling.
Scott W. Bogue, Kenneth A. Hoffman
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Geomagnetic Reversals during the Phanerozoic
Science, 1971An analysis of worldwide paleomagnetic measurements suggests a periodicity of 350 × 10 6 years in the polarity of the geomagnetic field. During the Mesozoic it is predominantly normal, whereas during the Upper Paleozoic it is predominantly reversed.
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Stochastic Resonance in Geomagnetic Polarity Reversals
Physical Review Letters, 2003Among noise-induced cooperative phenomena a peculiar relevance is played by stochastic resonance. In this paper we offer evidence that geomagnetic polarity reversals may be due to a stochastic resonance process. In detail, analyzing the distribution function P(tau) of polarity residence times (chrons), we found the evidence of a stochastic ...
Consolini G., De Michelis P.
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Dynamical similarity of geomagnetic field reversals
Nature, 2012No consensus has been reached so far on the properties of the geomagnetic field during reversals or on the main features that might reveal its dynamics. A main characteristic of the reversing field is a large decrease in the axial dipole and the dominant role of non-dipole components.
Jean-Pierre, Valet +3 more
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New Stochastic Model for Geomagnetic Reversals
Nature, 1970A non-stationary model for geomagnetic reversals is proposed. From the model, a mean length of all polarity intervals of 1.6 m.y. is predicted.
I K, Crain, P L, Crain
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Precambrian Geomagnetic Reversal Stratigraphy
Nature, 1972REVERSALS of polarity are encountered in Precambrian rocks. It is therefore important to consider whether geomagnetic field reversals can be a viable stratigraphic tool in the Precambrian.
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