Ancient eruptions may have triggered conditions for oxygen ‘whiffs’ in the atmosphere In a nutshell Massive volcanic events known as Large Igneous Provinces (LIPs) likely released carbon dioxide, ...

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.

When we discuss climate change today, we are mostly concerned with how such change will impact our environment and our lives. We look to the past to help understand climate cycles and how our ...

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 ...

“However, ancient fossil soils – the best indicators of ancient carbon dioxide levels in the atmosphere – suggest only modest levels during the Archean. Other atmospheric greenhouse gases were also ...

The Archean Eon (4–2.5 million years ago ... generated a 62-mile-wide crater that ejected debris into the atmosphere and around the world. It’s not just the impact details that matter.