Topic summary
Geomagnetic polarity time scale
Extracted from the Wikipedia article Geomagnetic reversal.
Geomagnetic polarity time scale
Through analysis of seafloor magnetic anomalies and dating of reversal sequences on land, paleomagnetists have been developing a Geomagnetic Polarity Time Scale. The current time scale contains 184 polarity intervals in the last 83 million years (and therefore 183 reversals).