Magnetic reversals and mass extinctions

Details Magnetic reversals and mass extinctions Magnetic reversals and mass extinctions

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.314..341r&link_type=abstract

Nature (ISSN 0028-0836), vol. 314, March 28, 1985, p. 341-343.

Mathematics

Logic

48

Geomagnetism, Magnetic Field Inversions, Temporal Distribution, Biological Evolution, Extinction, Goodness Of Fit, Reversing

Scientific paper

The results of a study of reversals of the earth's magnetic field over the past 165 Myr are presented. A stationary periodicity of 30 Myr emerges which predicts pulses of increased reversal activity centered at 10, 40, 70, . . . Myr before the present. The correlation between the reversal intensity and biological extinctions is examined, and a nontrivial discrepancy is found between the magnetic and extinction periodicity.

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