Thermoluminescence and nuclear particle tracks in ALHA-81005 Evidence for a brief transit time

Details Thermoluminescence and nuclear particle tracks in ALHA-81005 Evidence for a brief transit time Thermoluminescence and nuclear particle tracks in ALHA-81005 Evidence for a brief transit time

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983georl..10..809s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 10, Sept. 1983, p. 809-812.

Physics

18

Ejecta, Lunar Rocks, Meteoritic Microstructures, Particle Tracks, Thermoluminescence, Transit Time, Impact Damage, Mineralogy, Temperature Profiles, Meteorites, Antarctic Meteorites, Allan Hills Meteorites, Alha81005, Moon, Origin, Description, Physical Properties, Characteristics, Clasts, Source, Samples, Meteorite, Thermoluminescence, Nuclear Tracks, Heating, Particles, Fragments, Parent Bodies, Surface, Thermal Properties, Terrestrial Ages, Decay, Impacts

Scientific paper

Thermoluminescence and nuclear particle track measurements were made on the Antarctic meteorite ALHA-81005. No nuclear particle tracks were found in lithic fragments indicating that the clast material never resided at the very surface of the parent body. The unusually low natural thermoluminescence of this material is interpreted as being due to a combination of anomalous fading and thermal decay. The thermal decay could be due to very long terrestrial age or heating either during atmospheric entry, in a near sun orbit or during a parent body impact event. Impact heating is considered the more likely of these possibilities for this meteorite. If the impact heating interpretation is correct the thermoluminescence data constrains the space exposure time of the object to be less than 2,500 years. Such a brief earth transit time is consistent with a lunar origin for this meteorite.

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