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North American Gold

When Earth formed, most of the gold sunk to its core—but some remained trapped inside Earth’s mantle.
Topic: Planet EarthPlanet EarthNova

Program Description

As Earth formed, most of its heavy metals, including iron and gold, sank to its molten core. But as the planet cooled, small amounts of heavy metals remained in its rocky mantle. Sometimes, gold trapped in Earth’s mantle works its way back up to the surface by hitching a ride during a geological shakeup––like an earthquake.