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Possible lunar source areas of meteorite ALHA 81005 Geochemical remote sensing informationAntarctic meteorite ALHA 81005 is a regolith breccia apparently sent to earth by an impact event in the lunar highlands. Laboratory studies of this sample provide information that is used to understand the source region on the moon using remote sensing data. The meteorites low thorium content is inconsistent with thorium values measured for the central lunar nearside from orbit with Apollo gamma-ray spectrometers. Similarly, the mineral assemblages inferred from near-IR spectra of small impact craters on the lunar nearside do not exhibit the significant component of olivine and Fe-bearing feldspar that is observed in the meteorite spectra. The existing remote sensing data suggest the most probable source region for ALHA 81005 is the nearside limb or the lunar farside and that the composition of ALHA 81005 represents a surface unit that has not previously been extensively sampled.
Document ID
19830065653
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Pieters, C. M.
(Brown University Providence, RI, United States)
Hawke, B. R.
(Brown Univ. Providence, RI, United States)
Gaffey, M.
(Brown Univ. Providence, RI, United States)
Mcfadden, L. A.
(Hawaii, University Honolulu, HI, United States)
Date Acquired
August 11, 2013
Publication Date
September 1, 1983
Publication Information
Publication: Geophysical Research Letters
Volume: 10
ISSN: 0094-8276
Subject Category
Lunar And Planetary Exploration
Accession Number
83A46871
Funding Number(s)
CONTRACT_GRANT: NAGW-37
CONTRACT_GRANT: NASW-3389
CONTRACT_GRANT: NAGW-28
Distribution Limits
Public
Copyright
Other

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