Some of the oxygen needed for early life to flourish on Earth may have been created when quartz crushed by earthquakes came into contact with water
Richard Berube / Alamy Stock Photo
Earthquakes and other geological processes may have enabled oxygen-producing reactions that shaped the evolution of some of Earth’s earliest organisms. Today, oxygen makes up around a fifth of Earth’s atmosphere, with most of it produced by plants and microbes. It didn’t start that way. There was very little oxygen in the atmosphere until levels spiked during the
between 2.4 billion and 2.3 billion years ago thanks to the rapid spread of microbes that release oxygen through photosynthesis.suggests a common ancestor that existed prior to the Great Oxidation Event was exposed to some amount of oxygen.at the University of California, San Diego, and his colleagues ground up quartz rock and exposed it to water under chemical conditions similar to those on Earth prior to high levels of oxygen.
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