Old rocks hold on to their secrets. Now, a geophysicist has unlocked clues trapped in the magnetic signatures of mineral grains in those rocks. These clues will help clear up the murky history of the Earth’s early core.
Old rocks hold on to their secrets. Now, a geophysicist has unlocked clues trapped in the magnetic signatures of mineral grains in those rocks. These clues will help clear up the murky history of the Earth’s early core.