oxygen oasis

atmospheric science

Learn about this topic in these articles:

In evolution of the atmosphere: Onset of oxygenic photosynthesis
…origin of the first so-called oxygen oasis, a restricted environment in which the abundance of O₂ rose above 5 × 10⁻⁸ PAL probably quite significantly. Within such oases, aerobic metabolism could occur. At their margins, the delivery of oxidizable materials from the surrounding global environment overwhelmed the local supply of…
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