A Striking Nitrogen Isotope Anomaly in the Bencubbin and Weatherford Meteorites
- 22 November 1985
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 230 (4728) , 935-937
- https://doi.org/10.1126/science.230.4728.935
Abstract
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 40 K in a presolar molecular cloud.Keywords
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