But in Wolf’s 3-D model of the late Archean time period, it doesn’t have to be one or the other. It might be freezing at the ice caps and at the same time warm enough to support liquid water ...

“What is really fascinating about this study is that we show that the planet is still capable of producing lavas as hot as during the Archean time period,” Gazel said in a statement.

The Archean Eon—covering from 2.5 to 4 billion years ago—is one of the most enigmatic times in the evolution of our planet, Gazel said. During this time period, the temperature of Earth's ...

New research reveals that the Archean era -- a formative time for early life from 3.8 billion ... "The beds speak to an intense period of late bombardment of the Earth, but their source has ...

the Archean and the Proterozoic. Some scientists recognize a fourth eon, which they call the Chaotian, which predates the others and is the time of the first formation of our solar system.

These newly discovered rocks from the Indian Ocean are as old as 2.7 billion years and date back to a time period geologists call the "Archean", which comes from the Greek word for "ancient".

The Archean Eon (4–2.5 million years ago ... “Uncovering this impact and finding more from the same time period could explain a lot about how life may have got started, as impact craters ...

The Archean Eon -- covering from 2.5 to 4 billion years ago -- is one of the most enigmatic times in the evolution of our planet, Gazel said. During this time period, the temperature of Earth's ...

The Archean Eon -- covering from 2.5 to 4 billion years ago -- is one of the most enigmatic times in the evolution of our planet, Gazel said. During this time period, the temperature of Earth's ...