A new study has revealed details about the composition of Earth's atmosphere during the Archean eon, which lasted from around 4 billion years ago to 2.4 billion years ago. Astrobiologists study ...

The late Archean period was a time of significant ... abilities long before oxygen became a permanent feature of Earth’s atmosphere. These temporary spikes could have created evolutionary ...

Archean: A geologic period in Earth's history marked by the emergence of life, about 3.8 billion to 2.5 billion years ago. atmosphere: The layer of gases surrounding the surface of a planet ...

Based on data gleaned from Archean outcrops, scientists generally agree that there was very little oxygen in the atmosphere right at Earth’s surface during the Archean. So a lot of oxygen much ...

Closer to the present, other rainstorms eroded the overlying tuff, exposing a fossil record of raindrops from the Archean eon, and may now have revealed the density of early Earth's atmosphere.

It is widely believed that Earth's atmosphere has been rich in oxygen ... geological and chemical changes during the late Archean eon (3.0-2.5 billion years ago) of Earth's geologic history.

More information: Yasuto Watanabe et al, Mechanistic links between intense volcanism and the transient oxygenation of the Archean atmosphere, Communications Earth & Environment (2025). DOI ...

Their findings suggest that volcanic activity helped create the perfect conditions for the oxygen-rich atmosphere needed to sustain all life on our planet. Focusing on the late Archean eon (3 billion ...

It is widely believed that Earth’s atmosphere has been rich in oxygen for about 2.5 ... geological and chemical changes during the late Archean eon (3.0-2.5 billion years ago) of Earth’s geologic ...