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Where Did the Earth’s Oxygen Come From? New Study Hints at an Unexpected Source

November 29, 2022

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Read time:

5-15 mins
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Presented by The Conversation

The Archean eon represents one-third of our planet’s history, but oxygen levels were nearly nonexistent during this time. Twenty-one percent of the atmosphere consists of this life-giving element, but how did the Earth’s atmosphere become oxygenated? Adam Charles Simon, an Arthur F. Thurnau professor of Earth & Environmental Sciences at the University of Michigan, and a team of researchers dive into the possibility that at least some of the Earth’s early oxygen came from a tectonic source via the movement and destruction of the Earth’s crust.

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