Molecular dynamics calculations suggest that molten hydrogen-bearing iron peroxide (FeO2Hx) may produce the ultra-low velocity zones that occur at the core-mantle boundary.
Earth’s interior
Posted inNews
Louise H. Kellogg (1959–2019)
Louise Kellogg, an influential solid Earth geodynamicist and leader of the geoscience community, passed away in April.
Posted inNews
The Blob Causing Earthquakes
Geophysicists discover that a “blob” of rock sinking into the mantle is the force triggering earthquakes in the Hindu Kush.
Posted inEditors' Vox
Measuring Explosive Events on Earth from the Ionosphere
Natural and manmade explosive events occurring on or below the Earth’s surface can be measured remotely in different ways and different places from the ionosphere.
Posted inOpinions
Looking Down to Reach to the Stars
Discoveries deep beneath Earth’s surface drive planetary exploration, and discoveries on other planets inform our understanding of the world beneath our feet.
Posted inResearch Spotlights
Explaining the Genesis of Superdeep Diamonds
Real-time tracking during diamond anvil cell experiments indicates reaction rates may control the unusual depth distribution of the extremely rare diamonds that form deep within Earth’s mantle.
Posted inEditors' Highlights
Seismic Anisotropy Due to a Compositionally Layered Mantle
Investigating the role of layered rocks and compositional banding on mineral scale in generating seismic anisotropy in the mantle.
Posted inFeatures
Isotope Geochemists Glimpse Earth’s Impenetrable Interior
Painstaking measurements of isotopes and their relative abundance in rocks have illuminated the hidden inner Earth and our planet’s origins and shadowy past for much of the preceding century.
Posted inFeatures
The Unsolved Mystery of the Earth Blobs
Researchers peering into Earth’s interior found two continent-sized structures that upend our picture of the mantle. What could their existence mean for us back on Earth’s surface?
Posted inAGU News
Collaboration Reveals What’s Beneath the Surface
How do scientists look underground? Answering questions about Earth’s interior requires an attack from many angles.