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Story summary
- Two large low-shear-velocity provinces (LLSVPs) above Earth's core may have formed from material leaking from the core during Earth's formation, according to Geodynamicist Yoshinori Miyazaki.
- The two blobs were identified in the 1980s.
- They may influence tectonic plate formation and the Earth's magnetic field.
- Recent studies show the blobs are stable.
- The findings were published in Nature Geoscience.
