Oxygen fugacity and geochemical variations in the martian basalts: implications for martian basalt petrogenesis and the oxidation state of the upper mantle of Mars

The oxygen fugacity of the Dar al Gani 476 Martian basalt is determined to be quartz-fayalite-magnetite (QFM) -2.3 +/- 0.4 through analysis of olivine, low-Ca pyroxene, and Cr-spinel, and is in good agreement with revised results from Fe-Ti oxides that yield QFM -2.5 +/- 0.7. This estimate falls wit...

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Veröffentlicht in:	Geochimica et cosmochimica acta 2002-06, Vol.66 (11), p.2025-2036
Hauptverfasser:	Herd, Christopher D.K, Borg, Lars E, Jones, John H, Papike, James J
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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