Question:
If the magnetic field flips every 250,000 years . . .
. . . How can the last flip be 790,000 years ago?
If the magnetic field flips every 250,000 years . . .The article said "average". Which means we're overdue.. . . How can the last flip be 790,000 years ago?
:') It would mean that the most recent flip was 40,000 years ago. But as someone else pointed out, that's average. It's also not much good for dating except for ballparking, because other methods have to be used to determine the age of the deposit.