The first global map of deep-earth earthquakes reveals activity far below the crust
Seismologists have created the first comprehensive map documenting earthquakes occurring hundreds of miles beneath the surface, revealing mysterious tectonic activity deep within the Earth's mantle.
Deep-focus earthquakes occur at depths between 180 and over 400 miles below the surface, far beneath the tectonic plates of the crust. This global mapping effort shows that these tremors primarily cluster in subduction zones where cold oceanic slabs sink into the hot mantle.
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