4 billion years ago, the Earth was composed of a series of magma oceans hundreds of kilometres deep.
The rocks provide rare evidence of a time when Earth's surface was a deep sea of incandescent magma.
Himalayan rocks hold magnetic clues about their origins.
Craig Robert Martin
Earth's magnetic field locks information into lava as it cools into rock. Millions of years later, scientists can decipher this magnetic data to build geologic timelines and maps.
St Helena, where Earth’s magnetic field behaves strangely.
The Earth's magnetic field is a lot weaker than we would expect around the island of St Helena.
What’s going on 150 kilometers below the Earth’s surface?
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A new array of seismometers provides a glimpse of what's happening deep beneath this geologic fault. New data help explain why the north and south of the region are more seismically active than the middle.
Signals from violent earthquakes are helping reveal the landscape of the planet's insides.
Evidence is mounting that water came from within the Earth not from asteroids or comets.
Satellite image of California’s San Andreas fault, where two continental plates come together.
NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
Fifty years on from a groundbreaking paper, geophysicists have progressed from believing continents never moved to thinking that every movement may leave a lasting memory on our planet.
Dating the Earth’s enigmatic inner core: a Pluto-sized ball of iron that is super hot and frozen at the same time.
The Earth's inner core is more than half a billion years older than previously thought, shows a study. The results could help us better understand the processes that shape the planet's surface.
No Earths were harmed in the making of this image.
The discovery of a thickly viscous layer which traps sinking plates below Earth's surface has wide implications, not least as a cause of earthquakes.
Our planet’s interior is complex and has many layers. Their formation and structure contain many unsolved mysteries. But new research is providing some clues about how Earth’s internal structure may have…
Earth crust cutaway.
A little more than 90 years ago, British geologist Herbert Hall Turner noticed some earthquake data that suggested a surprising explanation. The only way to explain it was if the quake had occurred hundreds…