This discovery alone would be an impressive find. If you know a sample of rock is only one step removed from Earth's first crust, terra primum, then "by studying the makeup of these rocks, you ...

New study challenges discovery of Earth’s ‘oldest’ impact crater - The discovery of an ancient meteorite impact crater was ...

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 ...

Earth is just shy of 4.6 billion years old and roughly a couple hundred million years after it was born, the planetary blob began to cool enough for it to form its first crust. Astonishingly, scien… ...

Geologists have long debated whether a stony formation in Canada contains the world’s oldest rocks – new measurements make a ...

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 ...

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 ...

EARTH is just shy of 4.6 billion years old and roughly a couple hundred million years later the planetary blob began to cool enough for it to form its first crust.

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.

Moser published his discovery in Geology in 1997, ... Perhaps it was simply another pseudotachylite, or part of the Earth's original crust, the critics said.

A new study finds the original crust on Mars is more complex, ... and especially what it means for how Earth's crust first formed." ... Payré says she was mildly surprised at the discovery.