Magnetic reversals and mass extinctions

@article{Raup1985MagneticRA,
  title={Magnetic reversals and mass extinctions},
  author={David M. Raup},
  journal={Nature},
  year={1985},
  volume={314},
  pages={341-343}
}
  • D. Raup
  • Published 28 March 1985
  • Physics
  • Nature
Previous analyses of the time distribution of reversals of the Earth's magnetic field have yielded mixed results. Some authors have claimed significant periodicities of order 107 yr1,2 whereas others have reported failure to reject null hypotheses of random spacing at that scale3–6. Because of repeated suggestions that field reversal is linked to biological extinction7–12, further analysis of the magnetic time series is appropriate. I present here the results of a study of the reversal record… 

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Magnetic Polarity Time Scales and Reversal Frequency

The interpretation of oceanic magnetic anomaly sequences provides the longest continuous record of geomagnetic polarity available for analysis of reversal frequency. The polarity sequence since the

Mantle plumes and the periodicity of magnetic field reversals

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Are cratering and probably related geological records periodic?

The controversial topic of periodicity in geological records in relation to astronomical modeling is reviewed. Although impact cratering, frequency distribution of geo-magnetic reversals, and mass

On rates of occurrence of geomagnetic reversals

...

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A study of 28 deep-sea piston cores from high and low latitudes shows that during the last 2.5 m.y. eight species of Radiolaria became extinct. Prior to their extinction these species were widely

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It has been repeatedly suggested that reversals of Earth9s magnetic field play a controlling role in evolution. Empirical evidence put forward to support this hypothesis has come from comparisons of

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(Received 1975 November 17; in original form 1975 July 18) Summary Power spectra of binary telegraph waves corresponding to observed geomagnetic polarity histories are compared to the theoretical

Periodicity of extinctions in the geologic past.

  • D. RaupJ. Sepkoski
  • Geography, Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1984
The temporal distribution of the major extinctions over the past 250 million years has been investigated statistically using various forms of time series analysis and contains 12 extinction events that show a statistically significant periodicity.

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Although there are good correlations observed between magnetic reversals and biological extinctions, the radiation dosage hypothesis is insufficient to explain the agreement. In particular, the

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