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

A Dynamic Planet. The discovery beneath California’s Sierra Nevada underscores just how active and ever-changing our planet truly is.While the surface might appear static, immense forces are ...

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

A Part of Earth’s Original Crust Still Exists NEMES LASZLO/SCIENCE PHOTO LIBRARY - Getty Images "Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." ...

Our planet was born around 4.5 billion years ago. To understand this mind-bendingly long history, we need to study rocks and the minerals they are made of.

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 ...

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.

Samarium-146 decays into neodymium-142, so any rock that formed after the first 500 million years of Earth's history holds the same ratio of neodymium-142 to other neodymium isotopes.

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 ...

Part of the planet’s original crust has been unearthed in Quebec, researchers Jonathan O'Neil and Richard Carlson announce in a study published in Science. Formed 4.3 billion years ago, the ...

A Fragment of Earth’s Original Crust Still Exists—and It’s Buried in Canada. Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried.

Researchers have made a new discovery that changes our understanding of Earth's early geological history, challenging beliefs about how our continents formed and when plate tectonics began.