Oxidation states of mid-ocean ridge basalt glasses

  title={Oxidation states of mid-ocean ridge basalt glasses},
  author={D. M. Christie and I. Carmichael and C. Langmuir},
  journal={Earth and Planetary Science Letters},
Abstract Precise new analyses of ferrous and total iron for 78 hand-picked mid-ocean ridge basalt (MORB) glasses constrain the redox states of MORB magmas, and the systematics of those redox states with respect to geography and chemistry. The data indicate that MORB magmas at the point of eruption include some of the most reduced terrestrial lavas yet analyzed. Irrespective of their tectonic setting, geographic setting or chemical type, quench glasses from the outer surfaces of MORB lavas have… Expand
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The oxidation state of basaltic martian meteorites is determined from the partitioning of europium (Eu) in their pyroxenes. The estimated redox conditions for these samples correlate with theirExpand


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A well established data base exists for the oxidation-reduction (redox) states of basalts on the Earth and on the Moon; the former equilibrate along the fayalite-magnetite-quartz buffer curve, andExpand
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Abstract Consideration of geochemical data from basalts formed near major Atlantic and Pacific transform faults reveals two significant sets of observations. First, compared to basalts formed farExpand
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