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Scientists uncover a hidden oxygen reservoir deep inside Earth

So, researchers have found that molten rock deep inside Earth can store far more oxygen than scientists previously thought. High-pressure experiments and computer simulations showed that magma can hold this extra oxygen independently of its usual chemical makeup. At pressures of up to 7 gigapascals, it made up more than 5% of the sample’s weight. This surprising reservoir could connect Earth’s deep interior and volcanic activity to the rise of an oxygen-rich atmosphere billions of years ago.
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