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A 'chondritic' eucrite parent body - Inference from trace elementsThirty-three elements were analyzed by radiochemical and instrumented neutron activation in four eucrites - Juvinas (brecciated), Ibitira (vesicular, unbrecciated) and Moore County and Serra de Mage (both cumulate, unbrecciated). Nebular and planetary effects are distinguished in the C1-normalized abundance patterns arranged in the order of volatility. Lithophile, chalcophile, and siderophile patterns are discussed; the stepped lithophile pattern reveals the dominance of nebular processes while the siderophile pattern retains little sign of nebular processes and instead reflects planetary metal-silicate partition. Volatiles were apparently accreted as a fractionated C3-like component, and consistent but subtle C1-normalized abundance differences between eucrites result from crystal/liquid differentiation.
Document ID
19780038098
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Morgan, J. W.
(Chicago Univ. Chicago, IL, United States)
Higuchi, H.
(Chicago Univ. Chicago, IL, United States)
Takahashi, H.
(Chicago Univ. Chicago, IL, United States)
Hertogen, J.
(Chicago, University Chicago, Ill., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 42
Subject Category
Lunar And Planetary Exploration
Accession Number
78A22007
Funding Number(s)
CONTRACT_GRANT: NGL-14-001-167
Distribution Limits
Public
Copyright
Other

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