Magnetite
SpaceEarth’s magnetic field took 70,000 years to complete an ancient reversal
Two Eocene magnetic reversals lasted about 18,000 and 70,000 years, according to a detailed North Atlantic sediment record.
Joseph Shavit
Two Eocene magnetic reversals lasted about 18,000 and 70,000 years, according to a detailed North Atlantic sediment record.
Joseph Shavit