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First explanations for boundary within Earth's mantle

2015-12-11 00:03:00| Climate Ark Climate Change & Global Warming Newsfeed

ScienceDaily: Earth's mantle, the large zone of slow-flowing rock that lies between the crust and the planet's core, powers every earthquake and volcanic eruption on the planet's surface. Evidence suggests that the mantle behaves differently below 1 megameter (1,000 kilometers, or 621 miles) in depth, but so far seismologists have not been able to explain why this boundary exists. Two new studies co-authored by University of Maryland geologists provide different, though not necessarily incompatible, explanations....

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