Mathematics – Logic
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.1111s&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 55, April 1991, p. 1111-1120.
Mathematics
Logic
21
Earth Mantle, Geochemistry, Mineralogy, Olivine, Chemical Composition, Petrology, Phase Diagrams, Meteorites, Eucrites, Diogenites, Olivine, Mantle, Parent Bodies, Antarctic Meteorites, Alh Meteorites, Alha77256, Alha84001, Petrology, Hed Meteorites, Pyroxene, Comparisons, Ordinary Chondrites, Chemistry, Partial Melting, Origin, Formation, Mineralogy, Petrography, Procedure, Thermal History, Stony Meteorites, Achondrites, Igneous Processes, Samples, Meteorite, Laboratory Studies
Scientific paper
Two olivine-rich Antarctic diogenites (ALH A77256 and ALH 84001) of the howardite-eucrite-diogenite (HED) meteorite association have olivine/pyroxene ratios similar to normative ratios in devolatilized ordinary chondrites. Based on chemical data and petrological analysis, these meteorites represent the residuum of partial melting of the mantle in the eucrite parent body (EPB). Mineral assemblages in these olivine-rich diogenites record a continuum in thermal histories from initial partial melting (1150-1200 C) to subsolidus reequilibration (795 + or - 55 C). The small number of olivine-rich diogenites known hints that only the outer portion of the EPB has been sampled.
Azeredo W. J.
Lipschutz Michael E.
Sack Richard O.
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