10 nov 1963 anni - Frederick Vine and Drummond Matthews discovered magnetic striping on the ocean floor. Studies started to show that the magnetic poles switch over time. On the ocean floor there are magnetic stripes, and they show when there was a normal or reversed magnetic pole. I used article 5.
Aggiunto al nastro di tempo:
Data:
10 nov 1963 anni
Adesso
~ 61 years ago