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Geography

Paleomagnetic Stripes Reveal Seafloor Spreading Rates and Reversals

Quick fact

The stripes on the ocean floor are symmetric around mid-ocean ridges and record the history of Earth's magnetic field flips over millions of years, acting like a tape recorder of spreading.

Why this is interesting

You've probably seen a map of the ocean floors with weird striped patterns. Did you ever wonder why those stripes exist?