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Green spherules from Apollo 15 - Inferences about their origin from inert gas measurements.Green spherules from the 'clod' 15426 and from fines 15421 contain about 100 times less trapped inert gases than normal bulk fines from Apollo 15. These spherules have apparently never been directly exposed to the solar wind. Spherules from other fines contain about 10 times more trapped gas than those from the 'clod.' The gas in the former is surface correlated. However, spherules from fines 15401 are exceptionally gas-poor. The trapped gases can be of solar-wind origin, but this origin requires a two-stage model for the spherules from the clods. Another possibility is that the gases were absorbed from an ambient gas phase. The trapped gases may also be assumed to represent primordial lunar gas. The composition of this gas is then similar to the 'solar' or 'unfractionated' component of gas-rich meteorites, but unlike that in most of the carbonaceous chondrites.
Document ID
19730042688
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lakatos, S.
(Rice University Houston, Tex., United States)
Yaniv, A.
(Tel Aviv, University Tel Aviv, Israel)
Heymann, D.
Date Acquired
August 7, 2013
Publication Date
April 1, 1973
Publication Information
Publication: The Moon
Volume: 7
Subject Category
Space Sciences
Accession Number
73A27490
Funding Number(s)
CONTRACT_GRANT: NGL-44-006-127
Distribution Limits
Public
Copyright
Other

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