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The composition of the mantle of the eucrite parent body and the origin of eucritesPrevious estimates of the composition of the EPB have tacitly assumed chondritic abundances of refractory LIL elements. A model is presented here which utilizes refractory element ratios instead. Consideration of these ratios and of known olivine-liquid partition coefficients for Sc, Mg and Si imply that the EPB mantle may be accurately modeled as a simple mixture of 25 percent eucrite + 75 percent olivine. The model also implies that eucrites such as Juvinas and Sioux County were derived by large degrees of partial melting (20-30 percent). Comparison of the model EPB mantle to known meteorite classes indicates a similarity between the element abundances of the EPB and C3 chondrites.
Document ID
19840052133
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jones, J. H.
(Arizona, University Tucson, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1984
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 48
ISSN: 0016-7037
Subject Category
Lunar And Planetary Exploration
Accession Number
84A34920
Funding Number(s)
CONTRACT_GRANT: NSG-7576
Distribution Limits
Public
Copyright
Other

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