Stable parts of the Earth's crust may not be as immovable as previously thought. While much of the crust is affected by plate tectonic activity, certain more stable portions have remained ...

Earth's crust today has a surprisingly similar composition ... for the debate over when our planet's plate tectonics began. No one knows exactly when or why the Earth's surface broke into pancake ...

The team's calculations showed the protocrust—Earth's earliest crust formed during the Hadean eon (4.5–4.0 billion years ago)—would naturally develop the same chemical signatures found in ...

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 ...