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One of the key pieces of evidence supporting plate tectonic theory was the discovery that rocks on the seafloor record ancient reversals of the Earth’s magnetic field: as rocks are formed where plates are moving away from one another, they record the current direction of the Earth’s magnetic field, which flip-flops

Physical Geology: Plate Tectonics, Earth’s magnetic field

Earth’s

Paleomagnetism

For an introductory college-level earth sciences class: a review of paleomagnetism (record in the rock of the direction and intensity …

Origin of Earth’s Magnetic Field

Origin of Earth’s