Mathematics – Logic
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.3157v&link_type=abstract
(The MacAlpine Hills Lunar Meteorite Consortium - Lunar and Planetary Science Conference, 21st, Special Session, Houston, TX, Ma
Mathematics
Logic
12
Cosmic Rays, Earth-Moon System, Lunar Evolution, Meteoritic Composition, Radioactive Isotopes, Aluminum Isotopes, Beryllium Isotopes, Calcium Isotopes, Impact Damage
Scientific paper
Four lunar meteorites were analyzed for the cosmogenic radionuclides Be-10, Al-26, Cl-36, and Ca-41. Histories of exposure to cosmic rays were modelled in terms of two-stage irradiations, each with a long first stage on the moon, lasting a time T2pi greater than 5 Ma at a burial depth d2pi(g/sq cm), followed by a second stage in space, i.e., the transit time between the moon and the earth, lasting a time T4pi (Ma) in a body of typical metereological size. It is inferred that the production rate is of the order of 5/Ma and the arrival rate worldwide is about 3,000,000 meteorites/Ma. It is concluded that each impact event large enough to produce lunar meteorites sends a large number of them to the earth.
Dockhorn B.
Fink David
Herzog Gregory F.
Klein Jeff
Korschinek Gunther
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