Abstract
The Earth's molten hot spots are hop‐scotching around the interior of the planet, researchers from the University of Rochester and the Scripps Institution of Oceanography believe they have confirmed. Defying the notion that the giant plumes of molten rock beneath the surface are static, the scientists have found that hot spots have moved substantially over the course of history.John Tarduno of Rochester and Jeff Gee of Scripps studied rocks gathered through the Ocean Drilling Project from l mile beneath the Pacific Ocean floor near Polynesia and the Mid‐Pacific Mountains. They analyzed the magnetization of the rocks and found that during the mid‐Cretaceous period, one hot spot moved at the speedy rate of 30 mm per year.
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