Since their formation billions of years ago, the oldest parts of Earth's continental rocks have generated natural hydrogen in ...

In the many millennia since, it seems continental crust has retained that original chemical signature, less affected by the heavy bombardment of meteorites that changed the composition of Earth's ...

But unlike modern oceanic crust, which typically lingers for less than 200 million years before getting recycled into Earth’s interior by plate tectonics, the precursor crust survived for more ...

Early Earth's first crust composition discovery rewrites geological timeline. ScienceDaily. Retrieved July 25, 2025 from www.sciencedaily.com / releases / 2025 / 04 / 250402122139.htm.

Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...

FINDING a piece of original crust requires an epic journey to the frigid north, the scorching outback, or maybe even beyond the bounds of Earth itself. The first stop on our odyssey is Yellowknife ...

Groundbreaking discovery: ... Read the original article. Citation: ... Mantle heat may have boosted Earth's crust 3 billion years ago. Apr 24, 2024.

A dense crystalline "rain" falling into Earth's mantle could explain how a mysterious seismic boundary forms beneath the crust, according to a study published today (Dec. 4) in the journal Nature.

Chunks of Earth's outer crust that are 3.8 billion years old provide rock-solid evidence that the planet had active tectonic plates shortly after its birth.

Earth is about 4.5 billion years old, and as the eons passed, the crust of the young planet experienced turbulence. Asteroid collisions shattered some parts, which melted and recrystallized, while ...

A dense crystalline "rain" falling into Earth's mantle could explain how a mysterious seismic boundary forms beneath the crust, according to a study published Wednesday in the journal Nature.