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Olivine diogenites - The mantle of the eucrite parent bodyTwo 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.
Document ID
19910050068
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sack, Richard O.
(Purdue Univ. West Lafayette, IN, United States)
Azeredo, William J.
(Purdue Univ. West Lafayette, IN, United States)
Lipschutz, Michael E.
(Purdue University West Lafayette, IN, United States)
Date Acquired
August 15, 2013
Publication Date
April 1, 1991
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 55
ISSN: 0016-7037
Subject Category
Lunar And Planetary Exploration
Accession Number
91A34691
Funding Number(s)
CONTRACT_GRANT: NSF DPP-87-15853
CONTRACT_GRANT: NSF EAR-89-04270
CONTRACT_GRANT: NAG9-48
Distribution Limits
Public
Copyright
Other

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