The Great Oxidation Event: A 200-Million-Year Journey to Oxygenation

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Earth’s “Great Oxidation Event” was spread over 200 million years, according to recent discoveries.

New research highlights the Great Oxidation Event’s complexity, revealing that the rise of atmospheric and oceanic oxygen was a dynamic process lasting over 200 million years, influenced by geological and biological factors critical for life’s evolution.

The Great Oxidation Event
About 2.5 billion years ago, free oxygen, or O2, first started to accumulate to meaningful levels in Earth’s atmosphere, setting the stage for the rise of complex life on our evolving planet.

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