Computer Science
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985e%26psl..75...72s&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 75, no. 1, Sept. 1985, p. 72-76. BMFT-supported research.
Computer Science
6
Aluminum 26, Antarctic Regions, Beryllium 10, Geochronology, Manganese Isotopes, Rare Gases, Lithology, Mars Surface, Meteoritic Composition, Radioactive Age Determination, Radioactive Isotopes, Meteorites, Antarctic Meteorites, Isotopes, Berilium 10, Aluminum 26, Manganese 53, Rare Gases, Shergottites, Elephant Moraine Meteorites, Eeta79001, Helium, Neon, Argon, Lithology, Radionuclides, History, Exposure Age, Comparisons, Ejection, Parent Bodies, Achondrites, Stony Meteorites, Eucrites
Scientific paper
The radionuclides Be-10, Al-26, and Mn-53 as well as the noble gases He, Ne, and Ar were measured on aliquots of a sample of lithology A from the shergottite EETA 79001. The radionuclide data yield an exposure age of 0.78 + or - 0.14 Ma and a terrestrial residence time of 0.32 + or - 0.17 Ma. The exposure ages derived from He-3, Ne-21, and Ar-38 all range between 0.4 and 0.6 Ma. These data rule out a common ejection of all known shergottites from their parent body as small objects in a single event about 2.5 Ma ago.
Bonani George
Herpers Ulrich
Hofmann Hansjakob J.
Morenzoni Elvezio
Nessi M.
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