Tag Archives: Earth’s Core

Heavy iron isotopes leaking from Earth’s core

by Becky Oskin, UC Davis, Phys.org

Earth’s molten core may be leaking iron, according to researchers who analyzed how iron behaves inside our planet.

The boundary between the liquid iron core and the rocky mantle is located some 1,800 miles (2,900 km) below Earth’s surface. At this transition, the temperature drops by more than a thousand degrees from the hotter core to the cooler mantle.

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Earth’s core may have hardened just in time to save its magnetic field

by Carolyn Gramling, ScienceNews

This shift both prevented the protective magnetic field from collapsing and recharged it.

Earth’s inner core solidified sometime after 565 million years ago — just in time to not only save the planet’s protective magnetic field from imminent collapse, but also to kick-start it into its current, powerful phase, a new study suggests.

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