Mantle plume vs. plate tectonics: Basalt cores reshape the North Atlantic breakup debate

PHYSorg
Feb 18, 2026, 2:23 pm59 ptsTrending
About 56 million years ago, Europe and North America began pulling apart to form what became the ever-expanding North Atlantic Ocean. Vast amounts of molten rock from Earth's mantle reached the ocean floor as the crust stretched and thinned, creating a volcanic, rifted margin between Norway and Greenland, a…

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