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THE OXIDATION-STATE OF THE EARTHS SUB-OCEANIC MANTLE FROM OXYGEN THERMOBAROMETRY OF ABYSSAL SPINEL PERIDOTITES

Abstract:

THE oxygen fugacity (fO2), or redox state, of the Earth's mantle is an important parameter in the evolution of mantle-derived magmatic rocks. Most estimates of the upper-mantle redox state have been based on samples of the sub-continental mantle and terrestrial lavas, and estimates of fO2 obtained by thermo-barometric methods tend to cluster within ±1.5 log units of the FMQ (fayalite-magnetite-quartz) reference oxygen fugacity buffer. Much less is known about the redox state of the sub-oceani...

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Publication status:
Published

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Publisher copy:
10.1038/341526a0

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Journal:
NATURE
Volume:
341
Issue:
6242
Pages:
526-527
Publication date:
1989-10-12
DOI:
ISSN:
0028-0836
URN:
uuid:b7e873e6-7cab-4866-a9d0-bff08c74c2c1
Source identifiers:
175084
Local pid:
pubs:175084
Language:
English

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