A vast global ocean may have covered early Earth during the early Archean eon, 4 to 3.2 billion years ago, a side effect of having a hotter mantle than today, according to new research. The new ...

A unique rock formation in China holds clues that tectonic plates subducted, or went underneath other plates, during the Archean eon (4 billion to 2.5 billion years ago), just as they do nowadays, a ...

The formation of Earth’s earliest continental crust during the Archean eon (4.0–2.5 Ga) reflects a complex interplay of mantle melting, magmatic differentiation and crustal recycling. Partial melting ...

Curtin University researchers use innovative techniques to date three-billion-year-old impact crater in Western Australia’s Pilbara region ...

The Archean eon (4.0–2.5 Ga) witnessed the birth and maturation of Earth’s first continental crust. High mantle temperatures and heat-producing elements promoted partial melting of hydrated peridotite ...

Earth's sea level has remained fairly constant during the last 541 million years, but a new study suggests the planet may have been covered by a vast global ocean 4 to 3.2 billion years ago. A vast ...