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- Title
Oxygen as a catalyst in the Earth's interior?
- Authors
Lin, Yanhao; Westrenen, Wim van
- Abstract
Schematic reaction mechanism of (de)polymerization of silicate magma by adding/removing oxygen. induced melting has been generally acceptedasanimportantprocessforalong time, especially in subduction zone settings, which provide a straightforward processtoinjectvolatilecompoundsinto thesourceregionofsubductionzonevolcanoes,buttheroleoftheoxygenatoms in H 2 O and CO 2 has not been assessed indetail. For example, sustained accumulation of metastable oxygen-rich patches over long periods of geological timeearlyinEarth'shistorywouldeventuallyleadtoatippingpoint,atwhichan outburst of oxygen-rich material could occur at the core-mantle boundary. If our hypothesis is proven correct, it has far-reaching consequencesformeltinginotherrocky bodies too, including Mars (which has a more oxygen-rich interior than the present-day bulk silicate Earth) and Mercury and the Moon (which have oxygen-depleted interiors compared to thepresent-daysilicateEarth).
- Subjects
INTERNAL structure of the Earth; ATMOSPHERIC oxygen; HIGH pressure (Science); OXYGEN; HIGH pressure (Technology); EARTH'S mantle
- Publication
National Science Review, 2021, Vol 8, Issue 4, p1
- ISSN
2095-5138
- Publication type
Article
- DOI
10.1093/nsr/nwab009