Computer Science
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993metic..28..204k&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 28, no. 2, p. 204-212.
Computer Science
14
Meteorite Craters, Meteoritic Composition, Radioactive Age Determination, Aluminum 26, Argon Isotopes, Beryllium 10, Namibia, Stratigraphy, Strontium Isotopes
Scientific paper
Rb-Sr isotopic systematics of the Roter Kamm rim samples confirm that their source is the Namaqualand basement; the Rb-Sr isotopic system was not disturbed by the impact event. K-Ar ages of pseudotachylite and melt breccia samples indicate the dominant presence of incompletely degassed fragments of basement rocks. The abundances of the cosmogenic nuclides Be-10 and Al-26 give no evidence of either erosion or extended burial. Two glassy fractions were isolated from a rim granite sample and dated by Ar-40-Ar-39 analysis to 3.7 +/- 0.3 Ma.
Hartung Jack B.
Klein Jeffrey
Koeberl Christian
Kunk Michael J.
Matsuda Jun-Ichi
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