A striking nitrogen isotope anomaly in the Bencubbin and Weatherford meteorites

Details A striking nitrogen isotope anomaly in the Bencubbin and Weatherford meteorites A striking nitrogen isotope anomaly in the Bencubbin and Weatherford meteorites

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985sci...230..935p&link_type=abstract

Science (ISSN 0036-8075), vol. 230, Nov. 22, 1985, p. 935-937.

Computer Science

46

Meteoritic Composition, Nitrogen Isotopes, Stony-Iron Meteorites, Anomalies, Breccia, Nitrogen 15, Meteorites, Nitrogen, Isotopes, Anomalies, Bencubbin, Weatherford, Stony-Iron Meteorites, Isotopic Ratios, Nucleosynthesis, Origin, Fractionation, Chemistry, Thermal Effects, Temperature, Mesosiderites

Scientific paper

The stony-iron meteorites Bencubbin and Weatherford contain nitrogen with a ratio of nitrogen-15 to nitrogen-14 larger than normal by as much as a factor of 2. The excess nitrogen-15 may be due either to a nucleosynthetic origin or to extreme isotopic fractionation. In the former case, it may reflect failure to homogenize nitrogen-15 produced in nova explosions. In the latter case, it may reflect chemical processing at temperatures below 40K in a presolar molecular cloud.

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