One of the many interesting things about the Rhesus Negative blood type, is the sheer number of theories that have, over many years, tried to explain how it came to exist at all.
One of those theories, centre’s around an event that happened around 41,400 years ago (during the last ice age) and was first recognised in the late 1960’s as ‘A geomagnetic reversal recorded in the Laschamp lava flows in the Clermont-Ferrand district of France’.
A ‘Geomagnetic Reversal’, is simply a short reversal of the earth’s magnetic field.
That event, known as ‘The Laschamp Event’ has since been demonstrated in geological archives in many parts of the world.
The alleged period of the magnetic field reversal was around 440 years, during which time, greater levels of radiation reached the surface of the earth, causing greater production of beryllium 10 and higher levels of carbon 14.
The ‘Laschamp Theory’ uses genetic mapping to show that a sudden mutation/change from Rhesus Positive to Rhesus Negative blood types occurred somewhere in the Basque area of Europe maybe as much as 40,000 years ago – during the same time period as the Laschamp Event.