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The age of Earth’s inner core revised

Earthquakes send sound waves through the Earth. Seismograms record the echoes as those waves travel along the core-mantle boundary, diffracting and bending around dense rock structures. New research from University of Maryland provides the first broad view of these structures, revealing them to be much more widespread than previously known. Credit: Doyeon Kim/University of Maryland

Scientists detect unexpected widespread structures near Earth’s core

A new study of Earth's inner core used seismic data from repeating earthquakes, called doublets, to find that refracted waves, blue, rather than reflected waves, purple, change over time -- providing the best evidence yet that Earth's inner core is rotating. Credit: Michael Vincent

Growing mountains or shifting ground: What is going on in Earth’s...

Earth, core, mantle

Heavy iron isotopes leaking from Earth’s core

The inner core is likely composed of the hexagonal close packed phase of iron and located at the center of the Earth at pressures between 329 and 364 GPa and temperatures of ~5000 to ~6000 K. Credit: Ehime University

Is the Earth’s inner core oscillating and translating anomalously?

Structure layers of the earth.

Scientists Find Iron ‘Snow’ in Earth’s Core

Mercury's interior based

Mercury has a solid inner core

Earth's layers

Scientists go to extremes to reveal make-up of Earth’s core

Researchers confirm Earth’s inner core is solid

Sound waves reveal enormous diamond cache deep in Earth’s interior

Earth

Laser experiments lend insight into metal core at heart of Earth

Jessica Irving sits with two meteorites Princeton seismologist Jessica Irving

Seismologists use massive earthquakes to unlock secrets of the outer core

Earth's crust, mantle and outer core interactions.

New insight into Earth’s crust, mantle and outer core interactions

Inside the target chamber at the University of Rochester's Omega Facility, a team of researchers including Princeton University's Thomas Duffy and June Wicks use lasers to compress iron-silicon samples to the ultrahigh pressures found in the cores of super-Earths.

Ultrahigh-pressure laser experiments shed light on super-Earth cores

This illustration shows how the changes in the electromagnetic properties of xenon, iron, and nickel under these intense pressures allow for the formation of XeFe3 and XeNi3.

Do you know where your xenon is?

Earth's Layers

Challenging core belief: Have we misunderstood how Earth’s solid center formed?

Earth experienced multiple large impacts; the high-pressure and -temperature conditions caused pockets of core and mantle partitioning that persist as chemically distinct today.

Earth’s core and mantle separated in a disorderly fashion

New research from The University of Texas at Austin adds evidence to a theory that claims the metallic cores

Trickle-down is the solution (to the planetary core formation problem)

Lithospheric-scale processes involved in the precursor stage of formation of the Deseado Massif auriferous province.

Plume-subduction interaction forms large auriferous provinces

Study sheds new light on earth’s evolution

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