Possible lunar source areas of meteorite ALHA 81005 Geochemical remote sensing information

Details Possible lunar source areas of meteorite ALHA 81005 Geochemical remote sensing information Possible lunar source areas of meteorite ALHA 81005 Geochemical remote sensing information

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10..813p&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 10, Sept. 1983, p. 813-816.

Physics

14

Ejecta, Geochemistry, Lunar Rocks, Remote Sensing, Selenology, Apollo Flights, Infrared Spectroscopy, Lunar Surface, Mineralogy, Spectral Reflectance, Meteorites, Antarctic Meteorites, Allan Hills Meteorites, Alha81005, Moon, Origin, Description, Physical Properties, Characteristics, Source, Geochemistry, Samples, Meteorite, Remote Sensing, Regolith, Breccias, Highlands, Regions, Thorium, Composition, Abundance, Mineralogy, Infrared, Wavelengths, Spectra, Nearside, Craters, Impacts, Maps, Reflectance

Scientific paper

Antarctic 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.

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