Gauss-Matuyama reversal

The Gauss-Matuyama Reversal was a geologic event approximately 2.58 million years ago when the Earth's magnetic field underwent reversal.

This event, which separates the Piacenzian from the Gelasian and marks the start of the Quaternary,[1] is useful in dating sediments.

Biological effects

The event is marked by the extinction of calcareous nanofossils Discoaster pentaradiatus and D. surculus, among others.

References

Clague, John et al. (2006) "Open Letter by INQUA Executive Committee" Quaternary Perspective, the INQUA Newsletter International Union for Quaternary Research 16(1): Archived 2006-09-23 at the Wayback Machine

See also

Geomagnetic reversal

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