Carbon-14 terrestrial ages and weathering of 27 meteorites from the southern high plains and adjacent areas (USA)

Details Carbon-14 terrestrial ages and weathering of 27 meteorites from the southern high plains and adjacent areas (USA) Carbon-14 terrestrial ages and weathering of 27 meteorites from the southern high plains and adjacent areas (USA)

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993metic..28..188j&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 28, no. 2, p. 188-195.

Computer Science

35

Meteorites, Meteoritic Composition, Radioactive Age Determination, Weathering, Abundance, Carbon 13, Carbon 14, Mass Spectroscopy, Texas, Meteorites, Carbon 14, Terrestrial Age, Age, Isotopes, Weathering, Catalog, Comparison, Carbon, Samples, Meteorite, Laboratory Studies, Procedure, Data, Analysis, Carbonate

Scientific paper

We report on a series of 27 C-14 terrestrial ages of meteorites from four states in the central and southwestern U.S. These results were compared to the earlier work of Boeckl (1972). Our results showed that the weathering rate for destruction of meteorites is lower than suggested by Boeckl. We estimate a 'half-life' for removal of meteorites of about 10 to 15 ka, similar to that derived for Roosevelt County meteorites. We also studied the weathering of these meteorites compared to terrestrial age. Only a weak correlation was observed, and for these meteorites the degree of weathering can only be taken as a weak indicator of terrestrial residence time. We also measured the delta-C-13 and C-14 and amount of weathering-product carbonates which show some interesting variations with the length of time the meteorites have been exposed to weathering.

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