Cross-section of the Earth's interior: crust, upper- and lower-mantle, and outer- and inner-cores. Journalists may use this image only with appropriate credit.

In a recent study, researchers from Curtin University and the Geological Survey of Western Australia unearthed compelling ...

Earth's crust today has a surprisingly similar composition to the planet's first outer shell, or "protocrust," new research finds. This early rocky shell featured chemical signatures previously ...

The researchers used seismic waves to examine the types of rock beneath the seafloor and create a digital cross-section of Earth's crust and mantle. The team published its findings Sept.

Researchers discover Earth's first crust, formed 4.5 billion years ago, had chemical features similar to modern continental crust. (photo credit: Tanya Kalian. Via Shutterstock) A study published ...