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Timing of Quaternary geomagnetic reversals and excursions in volcanic and sedimentary archives
Quaternary Science Reviews, 2020We review the ages of Quaternary magnetic polarity reversals and magnetic excursions. Improvements in radioisotopic 40Ar/39Ar dating of reversals and excursions reflect the use of multi-collector mass spectrometers, along with ultra-low backgrounds ...
J. Channell, B. Singer, B. Jicha
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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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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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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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Inhibition and geomagnetic field reversals
Journal of Geophysical Research: Solid Earth, 1993Analysis of the geomagnetic reversal chronology indicates a positive correlation between reversal rate and reversal inhibition. Such a correlation is to be expected between reversal rate and any inhibition resulting from the fact that a reversal transition requires a finite time.
P. L. McFadden, R. T. Merrill
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Nature, 1999
What drives the erratic reversal of Earth's magnetic field? Simulations that allow for variations in heat flow at the core–mantle boundary now implicate events in the mantle. From time to time the Earth's magnetic field reverses in polarity, and the record of such reversals is preserved in rocks magnetized at the time of their formation.
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What drives the erratic reversal of Earth's magnetic field? Simulations that allow for variations in heat flow at the core–mantle boundary now implicate events in the mantle. From time to time the Earth's magnetic field reverses in polarity, and the record of such reversals is preserved in rocks magnetized at the time of their formation.
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Comparison of Tectonic Phases and Geomagnetic Reversals in the Late Mesozoic and in the Cenozoic
Herald of the Russian Academy of Sciences, 2018V. Trifonov, S. Sokolov
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