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Two buried 'supercontinents' hiding inside Earth could be much older than previously thought

The article from CNN discusses a groundbreaking study revealing that Earth's mantle contains remnants of ancient supercontinents, suggesting that these massive landmasses have left a lasting imprint deep within the planet. Researchers, using advanced seismic imaging techniques, have identified structures in the mantle that correspond to the locations of supercontinents like Pangaea, Rodinia, and Nuna, which existed hundreds of millions to billions of years ago. These findings indicate that the process of continental drift and the formation of supercontinents not only shape the Earth's surface but also influence the deep interior, with material from these ancient landmasses being subducted into the mantle. This discovery provides new insights into the Earth's geological history and the dynamic processes that continue to shape our planet, potentially affecting our understanding of plate tectonics and mantle convection.

Read the Full CNN Article at:
[ https://edition.cnn.com/2025/01/31/science/earth-mantle-hidden-supercontinents/index.html ]