“Earth's True Polar Wander: Ancient Sea Levels Reveal Rapid Pole Shifts During Dinosaur Era” — what this page in the network covers. New research published in Nature Communications reveals that Earth's geographic poles shifted surprisingly fast during the age of dinosaurs, according to ancient sea level records. The study, led by geophysicist Ross Mitchell of the Chinese Academy of Sciences, analyzed paleomagnetic data and sea level changes to track true polar wander—the movement of the entire solid Earth relative to its spin axis. The findings indicate that around 84 million years ago, the poles tilted by approximately 12 degrees over about 5 million years, a rate much faster than previously thought.
This shift would have moved the North Pole from near what is now northern Canada toward Siberia. The research matters because it helps scientists understand the dynamic processes deep within Earth's mantle that can cause such dramatic reorientations, and it provides a new method for dating past polar wander events using sea level fluctuations. This listing links straight to the original page, where the content is available in full.