Other
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000lpico.997...33f&link_type=abstract
Workshop on Extraterrestrial Materials from Cold and Hot Deserts, p. 33
Other
Meteorites, Lunar Rocks, Meteoritic Composition, Weathering, Radiation Damage, Chondrites, Antarctic Regions, Deserts, Lunar Geology
Scientific paper
The recent discovery of two large lunar meteorites in the Dar al Gani (DaG) region of the Libyan Sahara desert (DaG 262 and DaG 400) have sparked considerable and wide ranging interest in lunar material. The addition of lunar meteorites to the collections of extraterrestrial material have greatly complemented the suite of samples returned by the Apollo and Luna missions almost 30 years ago, extending the range of materials available for investigation. However, care may be required in interpreting variations seen in the lunar meteorite population and also any differences with the returned lunar samples. As has been noted previously in the comparison of ordinary chondrite populations from Antarctica, hot deserts and observed falls, variations between the populations may be attributed to their interaction with the different terrestrial environments they have been exposed to rather than indigenous, pre-atmospheric differences. In the case of the lunar samples this effect may be even more extreme as all the lunar meteorites are finds whereas the returned lunar samples were collected and subsequently stored in as near to ideal conditions as practically possible. Other factors related to the high levels of radiation damage suffered by materials in the lunar regolith may also make certain aspects of the lunar meteorites susceptible to terrestrial weathering. The particular interest behind this paper is how terrestrial weathering may have influenced the abundance and release characteristics of the implanted solar gases.
Franchi Ian A.
Pillinger Colin T.
Verchovsky A. V.
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