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Study reports magma deep inside Earth can store extra oxygen

ScienceDaily reports that magma can hold extra oxygen, and a 7-gigapascal sample test found over 5% excess by weight.

Updated Oct 29, 2026 · 06:29 UTC1 reports

The short version

  • Scientists report that magma deep inside Earth can store surprising amounts of extra oxygen.[ScienceDaily]
  • At 7 gigapascals, excess oxygen made up more than 5% of the tested sample's weight.[ScienceDaily]
  • The work was led by Yanhao Lin and Ho-kwang Mao of HPSTAR, with Haiyang Niu and Wim van Westrenen.[ScienceDaily]
  • Its potential role in Earth's oxygen-rich atmosphere remains a potential, not established, contribution.[ScienceDaily]

Key facts

  • Magma deep inside Earth can store surprising amounts of extra oxygen, according to the reporting.[ScienceDaily]
  • At 7 gigapascals, excess oxygen accounted for more than 5% of the sample's weight.[ScienceDaily]
  • The research was led by Dr. Yanhao Lin and Dr. Ho-kwang Mao of HPSTAR, working with Prof. Haiyang Niu and Prof. Wim van Westrenen.[ScienceDaily]

What remains uncertain

  • The magma oxygen's contribution to Earth's oxygen-rich atmosphere is described only as potential, not established.[ScienceDaily]
  • The findings are reported by a single outlet, ScienceDaily, and have not been independently confirmed in the provided reporting.[ScienceDaily]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.