Giant hidden heat blob slowly travels beneath the U. S.

ScienceDaily
Nov 25, 2025, 12:16 pm69 ptsTrending
An immense pocket of hot rock deep beneath the Appalachians may be a wandering relic of the breakup between Greenland and North America 80 million years ago. Researchers suggest this slow-moving “mantle wave” drifted over 1,800 km to reach its current position, gradually reshaping the continent from below…

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