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Evolution of carbon isotopes, agglutinates, and the lunar regolithApollo 17 light-mantle soils and Apollo 15 Apennine Front soils are compared with respect to isotopic enrichment of C-13 and the maturity of the site. Analyses of soil-size fractions indicate that while the carbon concentration on particle surfaces remains relatively constant with increasing soil maturity, total surface-correlated carbon increases due to increasing total soil surface area. The role of agglutinates in the incorporation of surface-correlated carbon into aggregate grains is examined; agglutinates contain a major percentage of the carbon found in mature soil, and the volume-correlated carbon component in agglutinates apparently continues to increase after the surface-correlated carbon concentrations have reached a constant value. Constraints that may limit the carbon concentration in lunar soils to a value not greater than 300 micrograms/g are considered.
Document ID
19780062828
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Desmarais, D. J.
(Indiana Univ. Bloomington, IN, United States)
Basu, A.
(Indiana Univ. Bloomington, IN, United States)
Hayes, J. M.
(Indiana Univ. Bloomington, IN, United States)
Meinschein, W. G.
(Indiana University Bloomington, Ind., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1975
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar Science Conference
Location: Houston, TX
Start Date: March 17, 1975
End Date: March 21, 1975
Accession Number
78A46737
Funding Number(s)
CONTRACT_GRANT: NGR-15-003-118
CONTRACT_GRANT: NGR-15-003-115
Distribution Limits
Public
Copyright
Other

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