A hot blob currently beneath the Appalachians may have peeled off from Greenland around 80 million years ago and moved to where it is today at a rate of 12 miles per million years, scientists have found.
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A hot blob currently beneath the Appalachians may have peeled off from Greenland around 80 million years ago and moved to where it is today at a rate of 12 miles per million years, scientists have found.