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 ...

How continents were recycled

Plate tectonics shape the Earth's dynamic surface. But when did these dynamics first emerge? And will the present-day continents last forever?

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