New model suggests lost continents for early Earth

A new radioactivity model of Earth's ancient rocks calls into question current models for the formation of Earth's continental crust, suggesting continents may have risen out of the sea much earlier than previously thought ...

Deep biosphere microbes expand the chemical signatures of life

Search for signs of ancient microbial life in the geological record is challenging due to degradation of the primary organic material. Therefore, proof of biogenic origin often relies on chemical signatures that microorganisms ...

Europium points to new suspect in continental mystery

Clues from some unusual Arizona rocks pointed Rice University scientists toward a discovery—a subtle chemical signature in rocks the world over—that could answer a long-standing mystery: What stole the iron from Earth's ...

How the Pilbara was formed more than 3 billion years ago

The remote Pilbara region of northern Western Australia is one of Earth's oldest blocks of continental crust, and we now think we know how it formed, as explained in research published today in Nature Geoscience.

Data mining finds more than expected beneath Andean Plateau

Seismologists investigating how Earth forms new continental crust have compiled more than 20 years of seismic data from a wide swath of South America's Andean Plateau and determined that processes there have produced far ...

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